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description the CXA2050S is a bipolar ic which integrates the luminance signal processing, chroma signal processing, rgb signal processing, and sync and deflection signal processing functions for pal/ntsc system color tvs onto a single chip. this ic includes deflection processing functions for wide-screen tvs, and is also equipped with a secam decoder interface, making it possible to construct a tv system that supports multiple color systems. features i 2 c bus compatible compatible with both pal and ntsc systems (also compatible with secam if a secam decoder is connected) built-in deflection compensation circuit capable of supporting various wide modes countdown system eliminates need for h and v oscillator frequency adjustment automatic identification of 50/60hz vertical frequency (forced control possible) non-interlace display support (even/odd selectable) automatic identification of pal, ntsc, and secam color systems (forced control possible) automatic identification of 4.43mhz/3.58mhz crystal (forced control possible) non-adjusting y/c block filter one cv input, one set of y/c inputs, two sets of analog rgb inputs (one set of which can serve as both analog and digital inputs) built-in akb circuit support for forcing ys1 off applications color tvs (4:3, 16:9) structure bipolar silicon monolithic ic absolute maximum ratings (ta = 25?, sgnd, dgnd = 0v) supply voltage sv cc 1, 2, dv cc 1, 2 ?.3 to +12 v operating temperature topr ?0 to +65 ? storage temperature tstg ?5 to +150 ? allowable power consumption p d 1.7 w voltages at each pin ?.3 to sv cc 1, sv cc 2, dv cc 1, dv cc 2 + 0.3 v operating conditions supply voltage sv cc 1, 2 9.0 0.5 v dv cc 1, 2 9.0 0.5 v ?1 CXA2050S e96403-ps y/c/rgb/d for pal/ntsc color tvs sony reserves the right to change products and specifications without prior notice. this information does not convey any license by any implication or otherwise under any patents or other right. application circuits shown, if any, are typical examples illustrating the operation of the devices. sony cannot assume responsibility for any problems arising out of the use of these circuits. 64 pin sdip (plastic)
?2 CXA2050S block diagram video sw sharp ness sub cont trap killer det acc det dl dc tran clp d pic wide sawtooth gen. akb blk cv/yc trap off dl sharp dc tran d pic aging vm sub color tot acc pre/over tot pal id dem apc hue vco dem axis iref color sw fsc r-y fsc b-y v sync sep h sync sep 1vp-p xtal hue iref apcfil x358 x443 fscout secam ref ?(r-y) out ?(b-y) out yout yret ?(r-y) in ?(b-y) in ys1/vm r1in g1in b1in ys2 ym r2in g2in b2in ablfil cut off gb drv brt d- col g osd mix pic color & axis col hv comp abl eht h, v akb off ikin bout gout rout e-wout vd ?out /vprot vd + out /vprot sawosc vagcsh vtim scpout hd out dgnd dv cc 2 dv cc 1 ablin/ vcomp rsh gsh bsh l2fil afcpin/ hoff cera afcfil hsin vsin vsfil blhold dctran vm scl sda syncout ext sync in gb cut gb drv brt g pic wide parabola gen. vlin, scorr vposi, voff, vsize count down 525/625 inter -lace d-col gate 50/60 id gate phase det. 1/32 phase shift phase det 32f h vco 2f h h posi afc cd mode interlace v freq 2vp-p 1vp-p ext sync 6db h.drive ys1 off ys1 sw sub cont sand castle cvin yin cin sv cc 1 sv cc 2 sgnd1 sgnd2 video out shp f0 system ident limit abl 40 39 38 41 45 46 47 48 49 50 51 52 54 56 2 9 20 59 53 55 57 43 60 64 61 62 1 3 4 6 7 8 11 12 13 14 15 16 17 18 19 21 23 25 28 29 10 22 24 26 30 37 36 35 34 31 32 33 42 44 27 58 63 ym/ys2 sw y/c mix
?3 CXA2050S pin configuration 40 39 38 37 36 35 34 33 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 63 64 61 62 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 1 sv cc 1 apcfil x443 x358 test fsc out secam ref sgnd1 ?(r-y) out yout scpout yret sgnd2 ys1/vm r1in g1in b1in ys2 ym r2in g2in b2in sv cc 2 rsh rout gsh gout bsh bout ?(b-y) out ?(r-y) in ?(b-y) in cin ext sync in yin dctran cvin blhold video out sda scl vm syncout hsin vsin vsfil dv cc 2 iref dgnd cera afcfil l2fil afcpin/hoff hd out dv cc 1 sawosc vagcsh e-wout vd + out/vprot vtim ablfil ablin/vcomp ikin vd ?out/vprot
?4 CXA2050S pin description pin no. symbol equivalent circuit description 1 sv cc 1 power supply for y/c block. 2 apcfil cr connection for the chroma apc lag- lead filter. 1.2k 4.6v 1.2k 2 3 x443 connect a 4.433619mhz crystal oscillator. 200a 4k 500 3 4 x358 connect a 3.579545mhz crystal oscillator. 200a 4k 500 4 5 test test pin. outputs a 0 to 3v v-sync sep with positive polarity. if not used, leave this pin open. 15k 1k 5 6 fscout subcarrier output. output level: 5.2vdc, 0.4vp-p 280a 1.2k 147 6
?5 CXA2050S secam decoder interface. this pin serves as both a 4.43mhz output and as a secam identification input/output pin. 7 secamref 9 10 ?(r-y) out ?(b-y) out color difference signal outputs. go to high impedance when the secam system is detected. standard output levels for 75% cb: b-y: 0.665vp-p r-y: 0.525vp-p 5.7vdc when killer is on. 11 yout luminance signal output. black level is 3.5vdc. standard output level for 100 ire input: 1vp-p 8 sgnd1 gnd for y/c block. 250a 6k 20p 7.2v 7 200a 9 10 400a 500 30k 11 12 scpout sand castle pulse output. the 0 to 5v bgp pulse, the phase of which is controlled through the bus, is superimposed with the 0 to 2v h and vblk pulse for output. 10k 1k 1k 12 13 yret luminance signal input. clamped to 4.8v at the burst timing. standard input level for 100 ire input: 1vp-p 1.5k 70k 13 pin no. symbol equivalent circuit description
?6 CXA2050S 14 15 ?(r-y) in ?(b-y) in color difference signal inputs. clamped to 5.5v at the burst timing. standard input levels for 75% cb: b-y: 1.33vp-p r-y: 1.05vp-p 16 sgnd2 gnd for the rgb block. 1.5k 70k 14 15 input which combines ys1sw control with vm circuit on/off function. supports with ternary. vmsw (vth vm = 0.9v) v ilvm 0.3v vm circuit on v ihvm 3 1.5v vm circuit off ys1sw (vth ys1 = 2.5v) v ilys1 1.7v y/color difference input selected v ihys1 3 3.3v rgb1 input selected setting ys1off of i 2 c bus to 1, input for this pin is invalid. 17 ys1/vm 18 19 20 r1in g1in b1in analog r, g and b signal inputs. input a 0.7vp-p (no sync, 100 ire) signal via a capacitor. the signal is clamped to 5.7v at the burst timing of the signal input to the hsin input (pin 53). 21 ys2 ym/ys2sw ys2 control input. when ys2 is high, the rgb2 block signal is selected; when ys2 is low, the ys1sw output signal is selected. vilmax = 0.4v vihmin = 1.0v 100a 20k 17 10k 30k 200 18 19 20 100a 40k 21 22 ym ym/ys2 sw ym control input. when ym is high, the ys1sw output signal is attenuated by 6db. vilmax = 0.4v vihmin = 1.0v 100a 40k 22 pin no. symbol equivalent circuit description
?7 CXA2050S power supply for rgb block. 23 24 25 r2in g2in b2in analog/digital (dual-purpose) rgb signal inputs. the input signals are input via capacitors. when using analog input, input a 0.7vp-p signal (no sync, 100 ire); when using digital input, input a signal of at least 1.5vp-p (vth = 1.2v). the display level is 78 ire. when using digital input, digital input is selected regardless of the ys2 setting. in addition, the vm output is turned off. these pins are clamped to 5.7v at the burst timing of the signal input to the hsin input (pin 53). 30k 200 100a 23 25 24 27 29 31 rsh gsh bsh sample-and-hold for r, g and b akb. connect to gnd via a capacitor. when not using akb (manual cutoff mode), r, g and b cut-off voltage can be controlled by applying a control voltage to each pin. the control voltage is 4.5 1v. 200 27 29 31 28 30 32 rout gout bout r, g and b signal outputs. 2.5vp-p is output during 100% white input. 1.1ma 200 12k 28 30 32 33 ikin input the signal converted from the crt beam current (cathode current ik) to a voltage via a capacitor. the v blanking part is clamped to 2.7v at the v retrace timing. the input for this pin is the reference pulse return, and the loop operates so that the rch is 1vp-p and the g and bch are 0.81vp-p. the g and bch can be varied by 0.5v by the bus cutoff control. when not using akb, this pin should be open. 1k 50a 33 26 sv cc 2 pin no. symbol equivalent circuit description
?8 CXA2050S connect a capacitor to form the lpf of the abl control signal. 34 ablin/vcomp abl control signal input and vsaw high voltage fluctuation compensation signal input. high voltage compensation has linear control characteristics for the pin voltage range of about 8v to 1v. the control characteristics can be varied through eht-v control of the bus. abl begins to have effect below a threshold voltage of about 1.2v. abl functions as average value type. 35 ablfil 36 vtim v timing pulse output. outputs the timing pulse from v sync identification to the end of v blanking. pulses are positive polarity from 1 to 6v. during zoom mode, the v blanking pulse which has been expanded before and after the v sync is superimposed and output as the 1 to 3v pulse. 1.5v 147 34 1.2k 100k 35 10k 1k 1k 36 37 vd ?out/vprot v sawtooth wave output and v protect signal input. when a large current (3ma) is drawn from this pin, the rgb outputs are all blanked and ??is output to the status register vng. 400a 700 24k 30k 37 38 vd + out/vprot serves as both a v sawtooth wave output with the reverse polarity of vd ?out, and a vprotect signal input. the vprotect function can even be applied to this pin. 400a 700 30k 24k 38 pin no. symbol equivalent circuit description
?9 CXA2050S h deflection pulse input for h afc. input an about 5vp-p pulse via a capacitor. set the pulse width to 10 to 12s. this pin is also used as the hold- down signal input for the hd output, and if this pin is 1v or less for a 7v cycle or longer, the hold-down function operates and the hd output is held to 9vdc. in addition, the rgb outputs are all blanked. outputs ??to the status register xray. 44 39 e-wout v parabola wave output. 40 vagcsh sample-and-hold for agc which maintains the v sawtooth wave at a constant amplitude. connect to gnd via a capacitor. 800a 15k 78k 1.4k 39 1.2k 40 41 sawosc connect a capacitor to generate the v sawtooth wave. for the capacitor, use an mps (metalized polyester capacitor), etc., with a small tan d . 100 300 41 42 dv cc 1 power supply for the v deflection block. 43 hd out h drive signal output. this signal is output with the open collector. 147 20k 43 afcpin/hoff 10k 68k 10k 147 4.2v 44 pin no. symbol equivalent circuit description
?10 CXA2050S cr connection for the afc lag-lead filter. iref 45 l2fil filter for h afc. connect to gnd via a capacitor. the h phase can also be controlled from this pin by leading current in and out of this capacitor. as the pin voltage rises, the picture shifts to the left; as the pin voltage drops, the picture shifts to the right. 46 afcfil 100 45 46k 1.2k 46 47 cera connect the 32 fh vco ceramic oscillator. 400a 10k 47 48 50 dgnd dv cc 2 power supply for the h deflection block. gnd for the deflection block. 49 internal reference current setting. connect to gnd via a resistor with an error of less than 1% (such as a metal film resistor). 147 20k 49 51 vsfil filter for v sync separation. connect to gnd via a capacitor. 1k 51 pin no. symbol equivalent circuit description
?11 CXA2050S sync signal output for vsin and hsin. the output can be selected from the internal sync signals (pin 60 or pin 62) or the external sync signal (pin 63) by the i 2 c bus. output signal level: 2vp-p (0.6vp-p sync only) input/output gain: 6db 52 vsin sync signal input for v sync separation. input a 2vp-p y signal (or a 0.6vp-p sync signal). 53 hsin sync signal input for h sync separation. input a 2vp-p y signal (or a 0.6vp-p sync signal). 54 syncout 147 4.1v 20a 15k 52 147 3.2v 10a 14k 53 240a 1.2k 40k 147 54 55 vm outputs the differential waveform of the vm (velocity modulation) y signal. the signal advanced for 200ns from yout is output. the delay time versus yin is determined by the dl setting of the i 2 c bus. this output level can be set at 2.65vp-p or 1.1vp-p by the i 2 c bus. pedestal level is dc6.2v. this output can also be turned off by ys1, ym, and ys2. 400a 500 30k 147 1.2k 55 56 scl i 2 c bus protocol scl (serial clock) input. vilmax = 1.5v vihmin = 3.5v 4k 56 pin no. symbol equivalent circuit description
?12 CXA2050S 57 sda i 2 c bus protocol sda (serial data) i/o. vilmax = 1.5v vihmin = 3.5v volmax = 0.4v 4k 57 58 video out the input signal from cvin pin and yin pin is selected by i 2 c bus, and output externally. 200a 1.2k 147 58 capacitor connection for black peak hold of the dynamic picture (black expansion). 59 blhold 60 cvin composite video signal input. input the 1vp-p (100% white including sync) cv signal via a capacitor. the sync level of the input signal is clamped to 3.8v. in addition, this pin detects input video signal hsync, and outputs the status via the status register cvsync. 1.2k 4k 9a 20k 20k 4.6v 59 1a 4.6v 60 61 dctran connect a capacitor that determines the dc transmission ratio to gnd. 2k 2v 1.2k 4k 61 pin no. symbol equivalent circuit description
?13 CXA2050S 62 yin y signal input. input a 1vp-p (100% white including sync) y signal via a capacitor. the sync level of the input signal is clamped to 3.8v. 1a 4.6v 62 chroma signal input. input a c signal with a burst level of 300mvp-p via a capacitor. input signal is biased to 4.5v internally. 63 ext sync in external sync signal input. input a 0.3vp-p sync signal (or a 1vp-p cv signal or y signal) via a capacitor. the sync level of the input signal is clamped to 3.8v. 64 cin 1a 4.6v 63 30k 5.2v 50k 64 pin no. symbol equivalent circuit description
?14 CXA2050S electrical characteristics setting conditions ta = 25?, sv cc 1, 2 = dv cc 1, 2 = 9v, sgnd1, 2 = dgnd = 0v measures the following after setting the i 2 c bus register as shown in ? 2 c bus register initial settings? 1 2 3 4 5 6 7 8 9 sicc dicc fhfr ? fhr hdw vblkh vbgph vsp-p vsdc 90 65 15.90 400 26.5 12.6 4.15 1.1 3.1 40 30 15.55 ?00 24.5 11.6 3.35 0.9 2.9 measure the pin inflow current. measure the pin inflow current. hdrive output frequency confirm that i 2 c status register hlock is 1 (the pull-in range when f h is shifted from 15.734khz). measure the pulse width for the section where the hdrive output is high. measure the vdrive output vp-p. v cc = 9.0v, bus data = center v cc = 9.0v, bus data = center afc mode = 0h syncin: composite sync syncin: composite sync scp measure the pulse width for the section where the blk output is high. scp measure the pulse width for the section where the bgp output is high. syncin: composite sync signal block current consumption sync block current consumption horizontal free-running frequency horizontal sync pull-in range hd output pulse width scp blk output pulse width scp bgp output pulse width vdrive output amplitude vdrive output center potential 1, 26 42, 50 43 43 12 12 37, 38 37, 38 ma ma khz hz ? ? ? v v no. item symbol measurement conditions measurement pins measurement contents min. typ. max. unit sync deflection block items vbgph vblkh vsp-p 10.79ms vdrive+ vsdc 46: vsin in 67 49 15.734 25.5 12.1 3.75 1.0 3.0
?15 CXA2050S measure the ewdrive output vp-p. output amplitude when a video signal with an amplitude of 0.7vp-p/100 ire is input. input fsc to cvin. ratio of the fsc component of the yout amplitude when ctrap = 1 against the yout amplitude when ctrap = 0. syncin: composite sync trapoff = 0/1 trap-f0 = 7h 10 11 12 13 14 ewdrive output amplitude ewdrive output center potential r, g and b output amplitude r, g and b output linearity c-trap attenuation (3.58mhz) vewp-p vewdc vrout1 lin c-trap3.58 39 39 28, 30, 32 28, 30, 32 28 0.42 3.8 2.25 96 0.52 3.95 2.5 100 ?8 0.62 4.1 2.85 104 v v v % db no. item symbol measurement conditions measurement pins measurement contents min. typ. max. unit signal block items vewp-p 10.79ms vew dc 46: vsin in v1 v2 lin = v2 2 v1 100 f = 3.58mhz cvin: 0.7vp-p /100 ire cvin: 100 ire 50 ire cvin: fsc, 50 ire
?16 CXA2050S input fsc to cvin. ratio of the fsc component of the yout amplitude when ctrap = 1 against the yout amplitude when ctrap = 0. trapoff = 0/1 trap-f0 = 7h cvin: 3mhz, 50 ire vm = 1 4.43mhz pal input burst fsc 300mvp-p 640mvp-p fsc + 90 sub-color = 7h pal input: color = 1fh pal input: color = 1fh 15 16 17 18 19 20 c-trap attenuation (4.43mhz) vm output color difference ?r-y) output color difference ?b-y) output color gain ?r-y) color gain ?b-y) c-trap4.43 vvm vr-y vb-y vcolr-y vcolb-y 28 55 9 10 28 30 1.95 440 570 1.1 1.4 ?1 2.3 510 640 1.3 1.6 2.65 570 710 1.5 1.8 db v mv mv v v no. item symbol measurement conditions measurement pins measurement contents min. typ. max. unit bout vcolb-y rout vcolr-y ?(b-y) out vb-y ?(r-y) out vr-y f = 3mhz 50 ire vvm f = 4.43mhz cvin: fsc, 50 ire 450mvp-p fsc + 0 , fsc + 180 cin ?(r-y) in: 525mvp-p ?(b-y) in: 665mvp-p
?17 CXA2050S confirm that the burst frequency is pulled in at 3.58mhz 400hz. rout, bout ? gdcolr = 100 ? gdcolb = 100 output amplitude ratio when the r, g and bout ym = 1 and 0 vlr1out = vout vlg1out = vout vlb1out = vout hue = 1fh, sub ?hue = 7h cvin: burst only d-col = 0/1 ys1: 5v rgb1in: 0.7vp-p ys1: 5v rgb1in: 0.7vp-p ys1: 5v rgb1in: 0.7vp-p 21 22 23 24 25 26 27 28 29 hue center offset killer point apc pull-in range dynamic color operation r output dynamic color operation b output ym gain r output amplitude during linear r1 input g output amplitude during linear g1 input b output amplitude during linear b1 input f offset kp ? fapc ? gdcolr ? gdcolb ? gym vlr1out vlg1out vlb1out 28 30 28, 30, 32 28 30 32 ? ?00 94 102 ?.1 1.85 1.85 1.85 0 ?7 96 104 ?.1 2.05 2.05 2.05 9 400 98 106 ?.1 2.25 2.25 2.25 deg db hz % % db v v v no. item symbol measurement conditions measurement pins measurement contents min. typ. max. unit vp-p (dcol = 1) vp-p (dcol = 0) vp-p (dcol = 1) vp-p (dcol = 0) vp-p cvin: 100ire rgb1 in r, g, b out
?18 CXA2050S unit vlr2out = vout vlg2out = vout vlb2out = vout vdrout = vout vdgout = vout vdbout = vout ys2: 1v rgb2in: 0.7vp-p ys2: 1v rgb2in: 0.7vp-p ys2: 1v rgb2in: 0.7vp-p rgb2in: 1.5vp-p rgb2in: 1.5vp-p rgb2in: 1.5vp-p syncin: composite sync gcutoff = 0h bcutoff = 0h 30 31 32 33 34 35 36 37 38 r output amplitude during linear r2 input g output amplitude during linear g2 input b output amplitude during linear b2 input r output amplitude during digital r2 input g output amplitude during digital g2 input b output amplitude during digital b2 input ik level r ik level g ik level b vlr2out vlg2out vlb2out vdrout vdgout vdbout vikr vikg vikb 28 30 32 28 30 32 33 33 33 1.85 1.85 1.85 70 70 70 0.85 0.22 0.22 2.05 2.05 2.05 78 78 78 1.00 0.35 0.35 2.25 2.25 2.25 86 86 86 1.15 0.5 0.5 v v v ire ire ire v v v no. item symbol measurement conditions measurement pins measurement contents min. typ. max. rgb2 in rgb2 in vikg vikr vikb r, g, b out r, g, b out
?19 CXA2050S electrical characteristics measurement circuit signal sources are all gnd unless otherwise specified in the measurement conditions column of electrical characteristics. 9v 47 0.01 15k 470 1.5k 3.58 mhz 15p 15p 470p 0.47 4.43 mhz fsc out secam ref ?(r-y) out ?(b-y) out yout scpout 0.1 0.1 ?(r-y) in ?(b-y) in 0.1 ys1/vm 220 rgb1 in 0.01 0.01 0.01 ys2 220 ym 220 rgb2 in 0.01 0.01 0.01 0.01 47 9v rout 100 0.1 gout 100 0.1 bout 100 0.1 51k 9v 20k 20k ikin 0.001 1 9v 10 vtim 100 vdrv 100 vprot 10k vdrv + 100 e/w 100 820 0.1 0.1 (mps) 9v 2.7k 0.01 47 4700p hoff 10k hp gen. 8.2k 0.01 1 500k 270 9v 0.01 47 10k 330k 0.47 100 560 4700p 1 3.3k 1k 9v 100p scl 220 vm sda 220 video out 100 cvin 0.47 yin ext sync in 10 cin 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 1 sv cc 1 apcfil x443 x358 test fsc out secam ref sgnd1 ?(r-y) out yout scpout yret sgnd2 ys1/vm r1in g1in b1in ys2 ym r2in g2in b2in sv cc 2 rsh rout gsh gout bsh bout ?(b-y) out ?(r-y) in ?(b-y) in ablin/vcomp 40 39 38 37 36 35 34 33 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 63 64 61 62 cin ext sync in yin dctran cvin blhold video out sda scl vm syncout hsin vsin vsfil dv cc 2 iref dgnd cera afcfil l2fil afcpin/hoff hd out dv cc 1 sawosc vagcsh e-wout vd + out/vprot vtim ablfil ikin vd ?out/vprot 10 10 10 10 120a 0.01
?20 CXA2050S 1t1 v ss 1t2 1b 1cd 1q 1a 1q v dd 2q 2t1 2a 2t2 2q 2cd 2b tc4538bp 1k 1k 5v from hdout 10k 2 3 4 5 6 7 8 1 2000p 10k 2000p 9 10 11 12 13 14 15 16 47 to afcpin hdout delay 7s afcpin width12s 9v hp gen.
?21 CXA2050S application circuit 9v 47 0.01 15k 470 1.5k 3.58mhz 15p 18p 470p 0.47 4.43 mhz secam reference input/output for secam ic 0.1 0.1 0.1 220 0.01 0.01 0.01 220 220 0.01 0.01 0.01 0.01 47 9v 100 0.022 100 100 0.001 1 10 100 100 10k 100 100 820 0.1 0.1 9v 2.7k 0.01 47 4700p 10k 5.6k 0.01 2.2 500k 470 9v 0.01 47 10k 330k 1 100 470 0.0047 1 3.3k 2.2k 9v 100p 220 220 100 4.7 2.2 0.47 2.2 2.2 0.47 color difference outputs for 1h delay line sand castle pulse output color difference inputs from 1h delay line analog rgb inputs analog/digital rgb inputs rgb outputs ym input ys2 input ys1/vm ternary level input * 1 metal film resistor recommended * 2 mps capacitor recommended ik input 220 1k 10 abl/vertical high voltage fluctuation compensation signal input v sawtooth wave outputs v timing pulse output v protect signal input v parabola wave output * 2 0.1 100 0.1 hd output hp output hold-down input * 1 vm output 220 i 2 c bus input/output cv signal or y signal output cv signal input y signal input c signal input external sync signal input 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 1 sv cc 1 apcfil x443 x358 test fsc out secam ref sgnd1 ?(r-y) out yout scpout yret sgnd2 ys1/vm r1in g1in b1in ys2 ym r2in g2in b2in sv cc 2 rsh rout gsh gout bsh bout ?(b-y) out ?(r-y) in ?(b-y) in ablin/vcomp 40 39 38 37 36 35 34 33 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 63 64 61 62 cin ext sync in yin dctran cvin blhold video out sda scl vm syncout hsin vsin vsfil dv cc 2 iref dgnd cera afcfil l2fil afcpin/hoff hd out dv cc 1 sawosc vagcsh e-wout vd + out/vprot vtim ablfil ikin vd ?out/vprot 0.022 0.022 application circuits shown are typical examples illustrating the operation of the devices. sony cannot assume responsibility for any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same.
?22 CXA2050S electrical characteristics measurement conditions ? 2 c bus register initial settings register name no. of bits initial setting description picture trapoff vm hue dctran d-pic color tot abl bright d-col limit sharpness pre-over color sw sub-cont trap f0 sub-color sub-hue sub-bright gamma g-drive aging b-drive interlace g-cutoff b-cutoff ron gon bon picon voff fhhi cd-mode akboff v-size 6 1 1 6 1 1 6 1 1 6 1 1 4 2 2 4 4 4 4 6 2 6 1 6 2 4 4 1 1 1 1 1 1 1 1 6 3fh 1h 1h 1fh 0h 0h 1fh 0h 0 1fh 0h 0 7h 3h 0h 7h 7h 7h 7h 1fh 0h 2ah 0h 2ah 0h 0h 0h 1h 1h 1h 1h 0h 0h 0h 0h 1fh maximum value trap off maximum value center value dctran off dpic off center value tot off picture/bright abl mode center value dcol off limiter off center value maximum value automatic switching center value center value center value center value center value minimum value center value aging off center value interlace minimum value minimum value r output on g output on b output on picture mute off vd output on fh normal automatic switching akb on center value v freq v-position afc-mode s-corr v-lin h-size ref-posi pin-comp vblkw h-positopn pin-phase afc-bow afc-angle eht h eht v xtal ext sync cv/yc v-aspect zoom sw hblksw v-scroll jmpsw hsizesw up-vlin lo-vlin left-blk right-blk up-cpin lo-cpin cdmode2 shpf0 ys1off dl 2 6 2 4 4 6 2 6 2 4 4 4 4 2 2 2 1 1 6 1 1 6 1 1 4 4 4 4 4 4 1 1 1 3 0h 1fh 1h 0h 7h 1fh 3h 1fh 0h 7h 7h 7h 7h 0h 0h 0h 0h 0h 0h 0h 0h 1fh 0h 0h 0h 0h 7h 7h 7h 7h 0 0 0h 3h automatic switching center value low gain minimum value center value center value maximum value center value minimum value center value center value center value center value eht h off eht v off automatic switching internal sync cv input minimum value zoom sw off hblksw off center value jmpsw off hsizesw off minimum value minimum value center value center value center value center value standard mode 3mhz ys1 normal center value register name no. of bits initial setting description
?23 CXA2050S trap f0 sub-hue b-cutoff v-lin pin-phase afc-angle lo-vlin right-blk lo-cpin picture hue color bright sub-bright g-drive b-drive v-size v-position h-size pin-comp v-aspect v-scroll sharpness sub-cont sub-color g-cutoff s-corr h-position afc-bow up-vlin left-blk definition of i 2 c bus registers slave addresses 88h: slave receiver 89h: slave transmitter register table " * ": undefined control register bit0 bit1 bit2 bit3 bit4 bit5 bit6 bit7 sub address 0 0 0 0 0 00 h 0 0 0 0 1 01 h 0 0 0 1 0 02 h 0 0 0 1 1 03 h 0 0 1 0 0 04 h 0 0 1 0 1 05 h 0 0 1 1 0 06 h 0 0 1 1 1 07 h 0 1 0 0 0 08 h 0 1 0 0 1 09 h 0 1 0 1 0 0a h 0 1 0 1 1 0b h 0 1 1 0 0 0c h 0 1 1 0 1 0d h 0 1 1 1 0 0e h 0 1 1 1 1 0f h 1 0 0 0 0 10 h 1 0 0 0 1 11 h 1 0 0 1 0 12 h 1 0 0 1 1 13 h 1 0 1 0 0 14 h 1 0 1 0 1 15 h 1 0 1 1 0 16 h 1 0 1 1 1 17 h 1 1 0 0 0 18 h 1 1 0 0 1 19 h trapoff dc-tran tot d-col vm d-pic abl limit pre-over color sw gamma aging 0 akboff cd-mode fhhi voff picon bon gon ron v-freq afc-mode ref-posi vblkw ext sync zoom sw jmp sw cv/yc hblksw hsizesw status register bit0 fv bit1 fsc bit2 bit3 bit4 xray bit5 vng bit6 ikr bit7 h lock interlace eht h eht v xtal up-cpin cdmode2 shpf0 * ys1 off dl * color sys
?24 CXA2050S description of registers register name (no. of bits) 1. video switch register cv/yc (1) : cv input/yc input selector 0 = cv input selected 1 = yc input selected ext sync (1) : ext sync selector switch 0 = internal sync (cv or y) selected 1 = ext sync selected 2. y signal block register sub-cont (4) : contrast gain control (y gain control) 0h = ?.5db 7h = 0db fh = +2.5db trap-f0 (4) : chroma trap f0 fine adjustment 0h = high 7h = center fh = low sharpness (4) : sharpness gain control 0h = ?db 7h = +2.5db fh = +6.5db shpf0 (1) : sharpness f0 selector 0 = 3mhz 1 = 3.5mhz pre-over (2) : sharpness preshoot/overshoot ratio control 0h = 1:1 (pre: over) 3h = 2:1 vm (1) : y differential signal output level selector for vm (for 100% 3mhz input) 0 = 1.1vp-p 1 = 2.65vp-p trap off (1) : y block chroma trap on/off 0 = trap on 1 = trap off dl (3) : y signal delay time control (80ns/step) 0h = max. 7h = min.
?25 CXA2050S dc-tran (1) : y dc transmission ratio selector switch 0 = 100% 1 = 81% d-pic (1) : y black expansion on/off switch 0 = off 1 = on point of inflection: 30 ire 3. c signal block register tot (1) : chroma tot filter band selector switch 0 = tot ?trap off 1 = tot ?trap on (trap fo 2mhz) color (6) : color gain control (chroma gain control) 0h = color off (?0db or less) 1fh = 0db b output: 1.02vp-p (i/o gain: +11db, 0.285vp-p input) 3fh = +6db sub-color (4) : color gain control (acc reference level control) 0h = ?db 7h = 0db fh = +3db hue (6) : hue control (phase control for chroma demodulation axis when sub-hue is 7h) control not possible for a pal system. 0h = +35 flesh color appears red. 1fh = 0 3fh = ?5 flesh color appears green. sub-hue (4) : hue control (phase control for chroma demodulation axis when hue is 1fh) b-y axis adjustable to 0? control not possible for a pal system. 0h = +10 7h = 0 fh = ?0 xtal (2) : xtal selection setting switch 0h = automatic identification 1h = force to xtal1 (3.58mhz) 2, 3h = force to xtal2 (4.43mhz) color sw (2) : color system setting 0h = automatic identification 1h = force to pal 2h = force to ntsc 3h = force to secam
?26 CXA2050S 4. rgb signal block register picture (6) : picture gain control (rgb gain control) 0h = ?4db 3fh = 0db rgb output: 2.5vp-p (i/o gain: +8db, 1vp-p input) bright (6) : bright control (rgb dc bias control) 0h = ?20mv 1fh = 0mv (?00mv for ref-p level) 3fh = +420mv sub-bright (6) : bright control (rgb dc bias control) 0h = ?20mv 1fh = 0mv (?00mv for ref-p level) 3fh = +420mv g-drive (6) : gch drive gain adjustment (gch gain control) 0h = g/r ?.5db 2ah = g/r 0db (g/r 0db) 3fh = g/r +1.5db b-drive (6) : bch drive gain adjustment (bch gain control) 0h = b/r ?.5db 2ah = b/r 0db (b/r 0db) 3fh = b/r +1.5db g-cutoff (4) : gch cut-off adjustment (gch reference pulse value control of ikin pin input) 0h = +34% 7h = +81% (g/r) fh = +135% b-cutoff (4) : bch cut-off adjustment (bch reference pulse value control of ikin pin input) 0h = +34% 7h = +81% (b/r) fh = +135% d-col (1) : dynamic color on/off switch 0 = dynamic color off 1 = dynamic color on (r, bch level control) gamma (2) : gamma control (rgb gamma correction amount control) 0h = gamma off 3h = gamma peak 17 ire (at input 40 ire), +400mv (at 2.5vp-p out)
?27 CXA2050S ref-position (2) : reference pulse timing setting 0h = from rising edge of v tim: rch 22h, gch 23h, bch 24h 1h = from rising edge of v tim: rch 20h, gch 21h, bch 22h 2h = from rising edge of v tim: rch 18h, gch 19h, bch 20h 3h = from rising edge of v tim: rch 16h, gch 17h, bch 18h pic-on (1) : on/off switch for rgb output with a reference pulse (set to off mode at power-on.) 0 = rgb output off (all blanked status) 1 = rgb output on r on (1) : on/off switch for rch video output without a reference pulse (operates when pic on = 1, set to off mode at power-on.) 0 = rch video output off (blanked status, reference pulse only output) 1 = rch video output on g on (1) : on/off switch for gch video output without a reference pulse (operates when pic on = 1, set to off mode at power-on.) 0 = gch video output off (blanked status, reference pulse only output) 1 = gch video output on b on (1) : on/off switch for bch video output without a reference pulse (operates when pic on = 1, set to off mode at power-on.) 0 = bch video output off (blanked status, reference pulse only output) 1 = bch video output on akb off (1) : akb on/off switch (set to on mode at power-on.) 0 = akb on 1 = akb off (ik clamp, ik s/h and reference pulse fixed to off) r, g and b cut-off adjustment at akb off performed by voltage applied to rsh, gsh and bsh pins, respectively. ys1 off (1) : ys1 forced off mode/ys1 normal mode 0 = ys1 normal mode 1 = ys1 forced off mode abl (1) : abl mode selector 0 = picture/bright abl mode 1 = picture abl mode limit (1) : peak limiter (rgbout pin is limited at dc5.2v) 0 = off 1 = on
?28 CXA2050S 5. deflection block register afc-mode (2) : afc loop gain control (pll between h sync and h vco) 0h = h free run mode 1h = small gain 2h = medium gain 3h = large gain fh-hi (1) : h oscillator frequency fixation on/off switch (set to on mode at power-on.) 0 = h oscillator frequency fixation off afc normal mode 1 = h oscillator frequency fixation on oscillator frequency fixed to maximum value (approx. 16.2khz) v freq (1) : v frequency mode setting 0, 1h = automatic identification 2h = forced mode (50hz) 3h = forced mode (60hz) v off (1) : v sawtooth wave oscillation stop on/off switch (set to off mode at power-on.) 0 = oscillation stop off (v drive?and v drive+: normal output) 1 = oscillation stop on (v drive?and v drive+: dc output and dc value vary according to v position.) cd-mode (1) : v countdown system mode selector (set to automatic selection mode during power-on.) 0 = non-standard signal mode, standard signal mode and no signal mode automatically selected 1 = fixed to non-standard signal mode (v oscillator frequency is 55hz during no signal mode "free run".) cdmode2 (1) : vertical sync pull-in speed selector 0 = standard 1 = high speed vblkw (2) : vblk width control (blanked pulses after reference pulse. operates when jmpsw = 1; blanked pulses after reference pulse fixed to 1h when jmpsw = 0.) 0h = 12h from bch reference pulse 1h = 11h from bch reference pulse 2h = 10h from bch reference pulse 3h = 9h from bch reference pulse h-position (4) : horizontal position adjustment (hafc phase control) 0h = 1s delay picture position shifts to right. (picture delayed with respect to hd.) 7h = 0s fh = 1s advance picture position shifts to left. (picture advanced with respect to hd.) v-position (6) : vertical position adjustment (v saw output dc bias control) 0h = ?.09v picture position drops, v drive+ output dc down. 1fh = 0v center potential: dc 3v 3fh = +0.09v picture position rises, v drive+ output dc up.
?29 CXA2050S v-size (6) : vertical amplitude adjustment (v saw output gain control) 0h = ?4% vertical picture size decreases. 1fh = 0% amplitude: 1.23vp-p, center potential: dc 3v when v-aspect is 2fh. 3fh = +14% vertical picture size increases. v-lin (4) : vertical linearity adjustment (gain control for v saw secondary component) 0h = 115% (bottom/top of picture) top of picture compressed; bottom of picture expanded. 7h = 100% (bottom/top of picture) fh = 85% (bottom/top of picture) top of picture expanded; bottom of picture compressed. s-corr (4) : vertical s correction amount adjustment (v saw secondary component gain control) 0h = secondary component amplitude by adding sawtooth = 0 fh = secondary component amplitude by adding sawtooth = maximum afc-bow (4) : vertical line bow compensation amount adjustment (phase control according to hafc parabola wave) 0h = top and bottom of picture delayed 500ns with respect to picture center. 7h = 0 ns fh = top and bottom of picture advanced 500ns with respect to picture center. afc-angle (4) : vertical line slope compensation amount adjustment (phase control according to hafc v saw) 0h = top of picture delayed 400ns, bottom of picture advanced 400ns with respect to picture center. 7h = 0 ns fh = top of picture advanced 400ns, bottom of picture delayed 400ns with respect to picture center. pin-comp (6) : horizontal pin distortion compensation amount adjustment (v parabola wave gain control) 0h = 0.10vp-p horizontal size for top/bottom of picture increases. (compensation amount minimum) 1fh = 0.58vp-p amplitude, center potential: dc 4v when v-aspect is 0h 3fh = 1.06vp-p horizontal size for top/bottom of picture decreases. (compensation amount maximum) h-size (6) : horizontal amplitude adjustment (v parabola wave dc bias control) 0h = ?.5v horizontal picture size decreases, ew-drive output dc down. 1fh = 0v amplitude: 0.58vp-p, center potential: dc 4 v when v-aspect is 2fh 3fh = +0.5v horizontal picture size increases, ew-drive output dc up. eht-h (2) : horizontal high-voltage fluctuation compensation amount setting (dc adjustment for parabolic output) 0h = 0v (compensation amount when 1v is applied to abl in versus 8v applied to abl in) 3h = ?.1v (compensation amount when 1v is applied to abl in versus 8v applied to abl in) eht-v (2) : vertical high-voltage fluctuation compensation amount setting (v saw output gain control) 0h = 0% (compensation amount when 1v is applied to abl in versus 8v applied to abl in) 3h = ?% (compensation amount when 1v is applied to abl in versus 8v applied to abl in) interlace (1) : interlace mode and non-interlace display selector switch 0,1h = interlace mode 2h = interlace mode; 1/2h shift applied to even lines 3h = interlace mode; 1/2h shift applied to odd lines
?30 CXA2050S pin-phase (4) : horizontal trapezoidal distortion compensation amount adjustment (v parabola wave center timing control) 0h = 0.8ms advance horizontal size for top of picture increases; horizontal size for bottom of picture decreases. 7h = 0ms 8.9ms from 4vdc vtim fh = 0.8ms delay horizontal size for top of picture decreases; horizontal size for bottom of picture increases. up-cpin (4) : horizontal pin distortion compensation amount adjustment for top of picture (v parabola wave gain control: func.) 0h = +0.6v horizontal size for top of picture increases. (compensation amount minimum) 7h = 0v (0.7vp-p 4:3 mode) fh = ?.6v horizontal size for top of picture decreases. (compensation amount maximum) lo-cpin (4) : horizontal pin distortion compensation amount adjustment for bottom of picture (v parabola wave gain control: func.) 0h = +0.5v horizontal size for bottom of picture increases. (compensation amount minimum) 7h = 0v (0.7vp-p 4:3 mode) fh = ?.5v horizontal size for bottom of picture decreases. (compensation amount maximum) v-aspect (6) : aspect ratio control (gain control for sawtooth wave) 0h = 75% 16:9 crt full 2fh = 100% 4:3 crt full, amplitude: 1.32vp-p 3fh = 112% zoom sw (1) : zoom mode on/off switch for 16:9 crt (25% of video cut) 0 = zoom off sawtooth wave amplitude: 1.32vp-p 1 = zoom on sawtooth wave amplitude: 70% hblksw (1) : hblk width control on/off switch during 4:3 software full display mode on a 16:9 crt 0 = control off hblk pulse generated from hpin. 1 = control on hblk pulse generated as pulse generated from hpin or as pulse generated from hvco and width adjusted. width adjustment is performed by the left-blk and right-blk registers. v-scroll (6) : vertical picture scroll control during zoom mode on a 16:9 crt (dc component added to sawtooth wave agc output to control zoomsw cut timing.) 0h = ?.2v scrolled toward top of screen by 32h and top of picture zoomed. 1fh = 0v 3fh = +0.2v scrolled toward bottom of screen by 32h and bottom of picture zoomed. jumpsw (1) : reference pulse jump mode on/off switch (in addition to v-aspect control, sawtooth wave gain control performed for 100% of vblk interval and 67% of picture interval) 0 = jump mode off 1 = jump mode on on a 4:3 crt, jump mode expands the sawtooth wave amplitude to 112% with v- aspect; on a 16:9 crt, jump mode compresses the sawtooth wave amplitude to 75% with v-aspect. the v blanking width is expanded at both the top and bottom of the picture. blanking for the bottom of the picture starts 251h after vtim, and blanking for the top of the picture can be varied as the blanking width after the reference pulse from the vblkw register.
?31 CXA2050S hsizesw (1) : lowers the e-w out dc level (during h-size compression) 0 = normal 1 = ?.35v up-vlin (4) : vertical linearity adjustment for top of picture (secondary component gain control for sawtooth wave added to sawtooth wave agc output) 0h = 100% (bottom/top of picture) fh = 115% (bottom/top of picture) top of picture compressed. lo-vlin (4) : vertical linearity adjustment for bottom of picture (tertiary component gain control for sawtooth wave added to sawtooth wave agc output) 0h = 100% (bottom/top of picture) fh = 75% (bottom/top of picture) bottom of picture compressed. left-blk (4) : hblk width control for the left side of picture when hblksw = 1 (phase control for timing pulse generated from hvco) 0h = +1.7s hblk width maximum 7h = 0s center hblk: 15s fh = ?.7s hblk width minimum right-blk (4) : hblk width control for the right side of picture when hblksw = 1 (phase control for timing pulse generated from hvco) 0h = +1.7s hblk width maximum 7h = 0s center hblk: 15s fh = ?.7s hblk width minimum 6. other aging (1) : white output aging mode on/off switch (takes priority over rgb on and pic on control. set to off mode at power-on.) 0 = aging mode off 1 = aging mode on (when there is no input signal, a 60 ire flat signal is output from the y block)
?32 CXA2050S 7. status register hlock (1) : lock status between h sync and h vco 0 = hvco free run status 1 = locked to h sync ikr (1) : akb operation status 0 = ref-p at ik small and akb loop unstable. 1 = ref-p at ik sufficient and akb loop stable. vng (1) : signal input status to v prot pin 0 = no v prot input 1 = v prot input (in this case, the rgb output is blanked.) xray (1) : signal input status to xray control pin (hoff pin) 0 = no xray control input 1 = xray control input (in this case, the rgb output is blanked.) color sys (2) : color system status 0h = pal 1h = ntsc 2h = secam 3h = no standard fsc (1) : x?al status (fsc information) 0 = 4.43mhz 1 = 3.58mhz fv (1) : vertical deflection frequency status 0 = 50hz 1 = 60hz
?33 CXA2050S description of operation 1. power-on sequence the CXA2050S does not have an internal power-on sequence. therefore, power-on sequence is all controlled by the set microcomputer (i 2 c bus controller). 1) power-on the ic is reset and the rgb outputs are all blanked. hdrive starts to oscillate, but oscillation is at the maximum frequency (16khz or more) and is not synchronized to the input signal. output of vertical signal vtim starts, but vdrive is dc output. bus registers which are set by power-on reset are as follows. aging = 0: all white output aging mode off ron = 0: rch video blanking on gon = 0: gch video blanking on bon = 0: bch video blanking on picon = 0: rgb all blanking on voff = 1: vdrive output stopped mode vfreq = 0: automatic identification mode (identification starts at 50hz) fhhi = 1: h oscillator maximum frequency mode hsizesw = 0: normal cd-mode = 0: automatic selector mode of the countdown mode akboff = 0: akb mode 2) bus register data transfer the register setting sequence differs according to the set sequence. register settings for the following sequence are shown as an example. set sequence CXA2050S register settings power-on reset status in 1) above. degauss reset status in 1) above. the crt is degaussed in the completely darkened condition. vdrive oscillation the ic is set to the power-on initial settings. (see the following page.) a sawtooth wave is output to vdrive and the ic waits for the vertical deflection to stabilize. the hdrive oscillator frequency goes to the standard frequency. akb operation start picon is set to 1 and a reference pulse is output from rout, gout and bout. then, the ic waits for the cathode to warm up and the beam current to start flowing. akb loop stable status register ikr is monitored. ikr = 0: no cathode current ikr = 1: cathode current note that the time until ikr returns to 1 differs according to the initial status of the cathode. video output ron, gon and bon are set to 1 and the video signal is output from rout, gout and bout.
?34 CXA2050S 1 1 0 1 0 1 1 0 0 0 1 0 0 0 1 0 0 1 1 0 1 0 1 1 1 1 bit0 bit1 bit2 bit3 bit4 bit5 bit6 bit7 sub address 0 0 0 0 0 00 h 0 0 0 0 1 01 h 0 0 0 1 0 02 h 0 0 0 1 1 03 h 0 0 1 0 0 04 h 0 0 1 0 1 05 h 0 0 1 1 0 06 h 0 0 1 1 1 07 h 0 1 0 0 0 08 h 0 1 0 0 1 09 h 0 1 0 1 0 0a h 0 1 0 1 1 0b h 0 1 1 0 0 0c h 0 1 1 0 1 0d h 0 1 1 1 0 0e h 0 1 1 1 1 0f h 1 0 0 0 0 10 h 1 0 0 0 1 11 h 1 0 0 1 0 12 h 1 0 0 1 1 13 h 1 0 1 0 0 14 h 1 0 1 0 1 15 h 1 0 1 1 0 16 h 1 0 1 1 1 17 h 1 1 0 0 0 18 h 1 1 0 0 1 19 h 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 * 1 1 1 1 1 1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 1 1 1 1 * 1 1 1 1 0 0 0 1 1 1 0 0 1 1 0 1 1 0 0 0 0 1 0 1 0 0 1 1 1 1 0 1 1 1 1 1 1 0 1 1 1 1 1 1 1 0 0 1 1 1 1 0 0 0 0 1 0 1 1 0 0 0 1 0 0 1 1 0 0 1 1 0 1 0 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 i 2 c bus power-on initial settings the initial settings listed here for power-on when vdrive starts to oscillate are reference values; the actual settings may be determined as needed according to the conditions under which the set is to be used. register table * ?undefined control register
?35 CXA2050S 3) power-on initial settings the initial settings listed here for power-on when vdrive starts to oscillate are reference values; the actual settings may be determined as needed according to the conditions under which the set is to be used. picture = 3fh max. (user control) trap off = 0 chroma trap on vm = 1 2.65vp-p (user control) hue = 1fh center (user control) dc-tran = 0 y dc transmission ratio 100% d-pic = 1 y black expansion on color = 1fh center (user control) tot = 0 chroma low frequency increased abl = 0 picture/bright abl mode bright = 1fh center (user control) d-col = 1 dynamic color on limit = 1 peak limiter on sharpness = 7h center (user control) pre-over = 0 sharpness pre/over ratio 1:1 color sw = 0 auto sub-cont = 7h center (adjust) trap f0 = 7h center (adjust) sub-color = 7h center (adjust) sub-hue = 7h center (adjust) sub-bright = 1fh center (adjust) gamma = 0 gamma off g-drive = 1fh center (adjust) aging = 0 aging mode off b-drive = 1fh center (adjust) interlace = 0 interlace mode g-cutoff = 7h center (adjust) b-cutoff = 7h center (adjust) ron = 0 rch video output off gon = 0 gch video output off bon = 0 bch video output off picon = 0 rgb all blanked voff = 0 vdrive oscillation fhhi = 0 horizontal oscillator frequency standard cd-mode = 0 v countdown auto mode akboff = 0 akb on v-size = 1fh center (adjust) v-freq = 0 auto v-position = 1fh center (adjust) afc-mode = 2 center s-corr = 7h center (adjust) v-lin = 7h center (adjust) h-size = 1fh center (adjust) ref-posi = 0 pin-comp = 1fh center (adjust)
?36 CXA2050S (power-on initial settings cont.) h-position = 7h center (adjust) pin-phase = 7h center (adjust) afc-bow = 7h center (adjust) afc-angle = 7h center (adjust) eht-h = 0 h drive high-voltage compensation off eht-v = 3 v drive high-voltage compensation amount maximum xtal = 0 auto ext sync = 0 internal sync cv/yc = 0 cv input v-aspect = 0h 16:9 crt full mode zoomsw = 1 16:9 crt hblksw = 1 hblk width adjust on v-scroll = 1fh center (user control) jmpsw = 0 16:9 crt full mode hsize sw = 0 normal up-vlin = 7h 16:9 crt full mode lo-vlin = 7h 16:9 crt full mode left-blk = fh hblk width min. (adjust) right-blk = fh hblk width min. (adjust) up-cpin = 7h center (adjust) lo-cpin = 7h center (adjust) cdmode2 = 0 standard shpf0 = 1 sharpness f0 3.5mhz ys1 off = 0 normal dl = 3 normal (adjust) 2. various mode settings the CXA2050S contains bus registers for deflection compensation which can be set for various wide modes. wide mode setting registers can be used separately from registers for normal picture distortion adjustment, and once deflection adjustment has been performed in full mode, wide mode settings can be made simply by changing the corresponding register data. vdrive signal picture distortion adjustment registers v-size, v-position, s-corr, v-lin e/wdrive signal picture distortion adjustment registers h-size, pin-comp, pin-phase, up-cpin, lo-cpin wide mode setting registers v-aspect, zoomsw, hblksw, v-scroll, jmpsw, hsizesw, up-vlin, lo-vlin, left-blk, right-blk
?37 CXA2050S examples of various modes are listed below. these modes are described using 570 (ntsc: 480) lines as the essential number of display scanning lines. wide mode setting register data is also listed, but settings may differ slightly due to ic variation. the standard setting data differs for 16:9 crts and 4:3 crts. register 16:9 crt 4:3 crt v-aspect 0h 2fh v-scroll 1fh 1fh zoomsw 1 0 up-vlin 0h 0h lo-vlin 0h 0h jmpsw 0 0 hsizesw 0 0 hblksw 1 1 left-blk 7h 7 right-blk 7h 7h 1) 16:9 crt full mode this mode reproduces the full 570 (ntsc:480) lines on a 16:9 crt. 4:3 images are reproduced by stretching the picture to the left and right. normal images are compressed vertically, but 16:9 images can be reproduced in their original 16:9 aspect ratio with a video source which compresses (squeezes) 16:9 images to 4:3 images. the register settings are the 16:9 crt standard values. 2) 16:9 crt normal mode in this mode, 4:3 images are reproduced without modification. a black border appears at the left and right of the picture. in this mode, the h deflection size must be compressed by 25% compared to full mode. the CXA2050S permits compression with a register (hsizesw) that compresses the h size by 25%. because excessive current flows to the horizontal deflection coil in this case, adequate consideration must be given to the allowable power dissipation, etc., of the horizontal deflection coil in the design of the set. in addition, this concern can also be addressed through measures taken external to the ic, such as by switching the horizontal deflection coil. full mode should be used when using memory processing to add a black border to the video signal. h blanking of the image normally uses the flyback pulse input to afcpin (pin 44). however, the blanking width can be varied according to the control register setting when blanking is insufficient for the right and left black borders. the following three settings are added to the 16:9 crt standard values for the register settings. hblksw = 1 left-blk = adjustment value right-blk = adjustment value the h angle of deflection also decreases, causing it to differ from the pin compensation amount during h size full status. therefore, in addition to the wide mode registers, pin-comp must also be readjusted only for this mode. 3) 16:9 crt zoom mode in this mode, 4:3 images are reproduced by enlarging the picture without other modification. the top and bottom of normal 4:3 images are lost, but almost the entire picture can be reproduced for vista size video software, etc. which already has black borders at the top and bottom. the enlargement ratio can be controlled by the v-aspect register, and enlarging the picture by 33% compared to full mode allows zooming to be performed for 4:3 images without distortion. in this case, the number of scanning lines is reduced to 430 lines compared to 570 lines for full mode. the zooming position can be shifted vertically by the v-scroll register. v blanking of the image normally begins from v sync and continues for 2h after the akb reference pulse, and the top and bottom parts are also blanked during this mode. adjust the following two registers with respect to the 16:9 crt standard values for the register settings. v-aspect = 2fh v-scroll = 1fh or user control
?38 CXA2050S 4) 16:9 crt subtitle-in mode when cinemascope size images which have black borders at the top and bottom of the picture are merely enlarged with the zoom mode in 3) above, subtitles present in the black borders may be lost. therefore, this mode is used to super-compress only the subtitle part and reproduce it on the display. add the lo-vlin adjustment to the zoom mode settings for the register settings. v-aspect = 2fh v-scroll = 1fh or user control lo-vlin = adjustment value the lo-vlin register causes only the linearity at the bottom of the picture to deteriorate. therefore, up-vlin should also be adjusted if the top and bottom of the picture are to be made symmetrical. since the picture is compressed vertically, the number of scanning lines exceeds 430 lines. 5) 16:9 crt v compression mode this mode is used to reproduce two 4:3 video displays such as for pandp. the v size must be compressed to 67% in order to reproduce two displays on a 16:9 crt without distortion using 480 scanning lines, and this can be set by jmpsw. compression is performed after the akb reference pulse, so the reference pulse remains in the overscan position. the v blanking width after the reference pulse becomes larger than normal and can be varied by the vblkw register. during this mode, the bottom v blanking width is also expanded to 3h wider than normal so that the bottom of the picture is not overscanned. 16:9 crt standard values are used with only the jmpsw setting changed for the register settings. jmpsw = 1 6) 16:9 crt wide zoom mode this mode reproduces 4:3 video software naturally on wide displays by enlarging 4:3 images without other modification and compressing the parts of the image which protrude from the picture into the top and bottom parts of the picture. the display enlargement ratio is controlled by v-aspect, and the compression ratios at the top and bottom of the picture are controlled by up-vlin and lo-vlin. adjust the following three registers with respect to the 16:9 crt standard values for the register settings. v-aspect = adjustment value up-vlin = adjustment value lo-vlin = adjustment value 7) 4:3 crt normal mode this is the standard mode for 4:3 crts. the register settings are the 4:3 crt standard values. 8) 4:3 crt v compression mode this mode is used to reproduce m-n converter output consisting of 16:9 images expanded to a 4:3 aspect ratio and other squeezed signals without distortion on a 4:3 crt. the v size must be compressed to 75% in order to reproduce a 4:3 squeezed signal at a 16:9 aspect ratio without any distortion. compressing the v size with the jmpsw register used in mode 5) above, compresses the v size to 67%. therefore, v-aspect is set to enlarge the v size by 8%. akb reference pulse handling and v blanking are the same as for mode 5) above. 4:3 crt standard values are used with the v-aspect and jmpsw settings changed for the register settings. v-aspect = 3fh jmpsw = 1
?39 CXA2050S mode settings 1)-1 1)-2 2) 3) 4) 5) 6) 7) 8) 16:9 16:9 16:9 16:9 16:9 16:9 16:9 4:3 4:3 16:9 4:3 4:3 4:3 4:3 (16:9 + subtitle area) 4:3 4:3 4:3 16:9 16:9 crt full wide full 16:9 crt normal 16:9 crt zoom 16:9 crt with subtitle area on 16:9 crt v compression 16:9 crt wide zoom 4:3 crt normal 4:3 crt v compression v-aspect = 0h: v size 75% v-aspect = 0h: v size 75% v-aspect = 0h: v size 75% hblksw = 1h: hblk width adjustment on left-blk = adjustable right-blk = adjustable pin-comp = adjustable (external support: h-dy h amplitude 75%) v-aspect = 2fh: v size 100% zoomsw = 1h: zoom on v size limited at 75% v-scroll = 0h: zoom bottom of video image 1fh: zoom center of video image 3fh: zoom top of video image adjustable: open to user v-aspect = 2fh: v size 100% up-vlin = adjustable: slightly compresses top of video image lo-vlin = adjustable: significantly compresses bottom of video image zoomsw 1h: v size limited at 75% (v-scroll = adjustable) v-aspect = 0h: v size 75% jmpsw = 1h: reference pulse skipping on v size compressed 67% after the reference pulse (compressed to 50% total) vblkw = adjustable: vblk width expanded at top and bottom of video image v-aspect = adjustable: v size 90% up-vlin = adjustable: lo-vlin = adjustable: (s-corr = adjustable): v-aspect = 2fh: v size 100% v-aspect = 3fh: v size 112% jmpsw = 1h: reference pulse skipping on (compressed to 75% total) vblkw = adjustable: vblk width expanded at top and bottom of video image setting crt size soft size mode name i 2 c bus register * the amount of picture distortion compensation in a vertical direction position of the crt does not change in response to the above modes; as a result, the initial values of each picture distortion register can be used as it is. compression of top and bottom of video image
?40 CXA2050S 3. signal processing the CXA2050S is comprised of sync signal processing, h deflection signal processing, v deflection signal processing, and y/c/rgb signal processing blocks, all of which are controlled by the i 2 c bus. 1) sync signal processing pin 54 (sync out) outputs at 2vp-p either the internal signal (cvin/yin) selected by the internal video switch, or the external sync signal input from pin 63 (ext sync in). this selection is controlled by the i 2 c bus. the signal output from pin 54 is buffered by a pnp tr. and is then input to hsin (pin 53) or vsin (pin 52) through a suitable filter. the y signals input to pins 52 and 53 are sync separated by the horizontal and vertical sync separation circuits. the resulting horizontal sync signal and the signal (fh = 15625hz or 15734hz) obtained by frequency dividing the 32fh-vco output using the ceramic oscillator (frequency 500khz or 503.5khz) by 32 are phase- compared, the afc loop is constructed, and an h pulse synchronized with the h sync is generated inside the ic. adjustment of the h oscillator frequency is unnecessary. when the afc is locked to the h sync, 1 is output to the status register (hlock) and that can be used to detect the presence of the video signal. the vertical sync signal is sent to the v countdown block where the most appropriate window processing is performed to obtain v sync timing information which resets the counter. akb and other v cycle timing are then generated from this reset timing. 2) h deflection signal processing the h pulse obtained through sync processing is phase-compared with the h deflection pulse input from pin 44 to control the phase of the hdrive output and the horizontal position of the image projected on the crt. in addition, the compensation signal generated from the v sawtooth wave is superimposed, and the vertical picture distortion is compensated. the h deflection pulse is used to h blanking of the video signal. when the pulse input from pin 44 has a narrow width, the pulse generated by the ic can be added to the h deflection pulse and used as the h blanking pulse (hblksw). pin 44 is normally pulse input, but if the pin voltage drops to the gnd level, hdrive output stops and 1 is output to the status register (xray). to release this status, turn the power off and then on again. 3) v deflection signal processing the v sawtooth wave is generated at the cycle of the reset pulse output from the countdown system. after performing wide deflection processing for this sawtooth wave, picture distortion adjustment is performed by the vdrive and e/wdrive function circuits and the signal is output as the vdrive and e/wdrive signals. 4) y signal processing either cvin, input from pin 60, or yin, output from pin 62, is selected by the video switch and then is passed to the y signal processing circuit as the y signal. the input level is 1vp-p. the y signal passes through the subcontrast control, the trap for eliminating the chroma signal, the delay line, the sharpness control, the clamp and the black expansion circuits, and is then output to pin 11 as yout. the differential waveform of the y signal, advanced for about 200ns from yout is output from pin 55 as the vm signal. the delay time is set by the bus register (dl). when cvin is selected, the trap is on; when yin is selected, the trap is off. the f0 of the internal filter is automatically adjusted within the ic. when the color killer function is operating, the f0 of the filter is not specified and rolling of display is generated. and, when status register color sys is not standard, turn the trap off. in addition, the f0 of the trap will be affected slightly by variations among ic, so fine adjustment through the i 2 c bus (trap-f0) may be required.
?41 CXA2050S 5) c signal processing the cvbs signal or chroma signal (specified input level: burst level of 300mvp-p) selected by the video switch passes through the acc, tot, chroma amplifier and demodulation circuits, becomes the r-y and b-y color difference signals, and is inverted for output on pins 9 and 10. the color difference signals are averaged together by the external 1h delay line, and are input to pins 14 and 15. both color difference signals are clamped together with the y signal input to pin 13. they are then combined with the g-y signal in the color control and axis control circuits. after y/c mixing, the signals become the rgb signals. if the burst level goes to ?7db or less with respect to the specified input level, the color killer operates. in addition, the color system (pal/ntsc) and the subcarrier frequency (4.43mhz/3.58mhz) are automatically identified according to the input chroma signal, and the internal vco, demodulation circuit, axis control circuit, etc., are adjusted automatically. furthermore, secam signals can also be identified if an external secam decoder is connected to pin 7. in this case, pins 9 and 10 and the secam decoder color difference output are linked together directly, and automatically one side goes to high impedance, the other goes to low impedance according to the input chroma signal, and then they are input to the external 1h delay line. system identification can be set to automatic or forced mode by the i 2 c bus (xtal and color sw). for identification result, the x?al status selected as color system is output to the status registers (color sys and fsc). 6) rgb signal processing the rgb signals obtained from the y/c block pass through the half-tone switch circuit (ym sw), the two switch circuits for the external rgb signals (ys1, ys2 sw), the picture control, dynamic color, gamma compensation, clamp, brightness control, drive adjustment, cut-off adjustment and auto cut-off circuits, and are output to pins 28, 30 and 32. the rgb signals input to pins 18, 19, 20, 23, 24, and 25 are 100 ire, 100% white 0.7vp-p signals, in accordance with the standard for normal video signals. if signals of 1.5vp-p or more are input to pins 23, 24, and 25, 78 ire output is obtained (digital input). the voltage applied to pin 34 (ablin) is compared with the internal reference voltage, integrated by the capacitor which is connected to pin 35, and performs picture control and brightness control. in order to adjust the white balance (black balance), this ic has a drive control function which adjusts the gain between the rgb outputs and a cut-off control function which adjusts the dc level between the rgb outputs. both drive control and cut-off control are adjusted by the i 2 c bus, with the rch fixed and the g and bch variable. an auto cut-off function (akb) which forms a loop between the ic and crt and performs adjustment automatically has also been added. this function can compensate for changes in the crt with time. auto cut- off operation is as follows. r, g and b reference pulses for auto cut-off, shifted 1h each in the order mentioned, appear at the top of the picture (actually, in the overscan portion). the reference pulse uses 1h in the v blanking interval, and is output from each r, g and b output pin. the cathode current (ik) of each r, g and b output is converted to a voltage and input to pin 33. the voltage input to pin 33 is compared with the reference voltage in the ic, and the current generated by the resulting error voltage charges the capacitors connected to pins 27, 29 and 31 for the reference pulse interval and is held during all other interval. the loop functions to change the dc level of the r, g and b outputs in accordance with the capacitor pin voltage so that the pin 33 voltage matches the reference voltage in the ic. the rch for the reference voltage in the ic is fixed and the g and bch are cut-off controlled by the i 2 c bus. during g/b-cutoff center status, the loop functions so that the rch for the reference pulse input to pin 33 is 1vp-p and the g and bch are 0.81vp-p. the reference pulse timing can be varied by the i 2 c bus. when akb is not used, the ic can be set to manual cut-off mode with i 2 c bus settings. in this case, the dc level of the r, g and b outputs can be varied by applying voltages independently to pins 27, 29 and 31.
?42 CXA2050S 4. notes on operation because the rgb signals and deflection signals output from the CXA2050S are dc direct connected, the board pattern must be designed consideration given to minimizing interference from around the power supply and gnd. do not separate the gnd patterns for each pin; a solid earth is ideal. design power supply as low impedance as possible. when impedance of power supply is high, video block power supply v cc interferes with deflection block power supply dv cc , and its deflection operation may be unstable. for this countermeasure, inputting lc to each sv cc and dv cc stabilizes the operation because power supply's interference is reduced. locate the power supply side of the by-pass capacitor which is inserted between the power supply and gnd as near to the pin as possible. also, locate the xtal oscillator, ceramic oscillator and iref resistor as near to the pin as possible, and do not wire signal lines near this pin. drive the y, external y/color difference and external rgb signals at a sufficiently low impedance, as these signals are clamped when they are input using the capacitor connected to the input pin. dc bias is applied to the chroma signal within the ic. input the chroma signal with low impedance via an external capacitor. use a resistor (such as a metal film resistor) with an error of less than 1% for the iref pin. use a capacitor, such as an mps (metalized polyester capacitor) with a small tan d for sawosc. when using a line frequency fh of 15625hz for the main clock (pal-b, g, etc.), murata's ceralock csb500f63 is recommended. this will yield a free-running frequency in the neighborhood of 15625hz.
?43 CXA2050S curve data i 2 c bus data conforms to the ? 2 c bus register initial settings?of the electrical characteristics measurement conditions (p. 22). v-position time [ms] 0 5 10 15 20 2.4 v [v] 3.6 3.4 3.2 3.0 2.8 2.6 v-position = 0 v-position = 1f v-position = 3f v-size time [ms] 0 5 10 15 20 2.0 v [v] 4.0 3.5 3.0 2.5 v-size = 0 v-size = 1f v-size = 3f s-corr time [ms] 0 5 10 15 20 2.4 v [v] 3.6 3.4 3.2 3.0 2.8 2.6 s-corr = 0 s-corr = 7 s-corr = f v-lin time [ms] 0 5 10 15 20 2.4 v [v] 3.6 3.4 3.2 3.0 2.8 2.6 v-aspect time [ms] 0 5 10 15 20 2.2 v [v] 3.8 3.4 3.2 3.0 2.8 2.6 v-aspect = 0 v-aspect = 1f v-aspect = 3f 3.6 2.4 v-scroll time [ms] 0 5 10 15 20 2.2 v [v] 3.8 3.4 3.2 3.0 2.8 2.6 3.6 v-scroll = 0 v-scroll = 1f v-scroll = 3f 2.4 v-lin = 0 v-lin = 7 v-lin = f
?44 CXA2050S up-vlin time [ms] 0 5 10 15 20 2.4 v [v] 3.6 3.4 3.2 3.0 2.8 2.6 up-vlin = 0 up-vlin = 7 up-vlin = f lo-vlin time [ms] 0 5 10 15 20 2.4 v [v] 3.6 3.4 3.2 3.0 2.8 2.6 lo-vlin = 0 lo-vlin = 7 lo-vlin = f pin-comp time [ms] 0 5 10 15 20 3.0 v [v] 4.2 4.0 3.8 3.6 3.4 3.2 pin-comp = 0 pin-comp = 1f pin-comp = 3f pin-phase time [ms] 0 5 10 15 20 v [v] 4.0 3.6 3.4 3.2 3.0 2.8 3.8 2.6 up-cpin time [ms] 0 5 10 15 20 v [v] 3.6 3.2 2.8 up-cpin = 0 up-cpin = 7 up-cpin = f 4.0 2.4 lo-cpin time [ms] 0 5 10 15 20 v [v] 3.6 3.2 2.8 lo-cpin = 0 lo-cpin = 7 lo-cpin = f 4.0 2.4 4.2 pin-phase = 0 pin-phase = 7 pin-phase = f 2.8
?45 CXA2050S h-size time [ms] 0 5 10 15 20 v [v] 4.8 4.4 4.0 3.6 3.2 h-size = 0 h-size = 1f h-size = 3f h-position data 04812 time [s] 3.5 3 2.5 2 1.5 2 6 10 14 1 delay data 0246 200 cvin ?yout delay time [ns] 800 700 600 500 400 300 13 5 7 trap off frequency [mhz] 0246 ?0 gain [db] 5 ? ?0 ?5 ?0 ?5 0 135 3.58mhz trap off = 0 4.43mhz trap off = 0 trap off = 1 ?5 sharpness (shp f0 = 0) frequency [mhz] 123 ? gain [db] ? sharpness = 0 sharpness = 7 sharpness = f 45678 ? 0 2 4 6 sharpness (shp f0 = 1) frequency [mhz] gain [db] sync center t [sec] 6sec hsin afcpin 12sec sharpness = 0 sharpness = 7 sharpness = f 910 1234 567 8 910 53 44 ? ? ? 0 2 4 6
?46 CXA2050S picture data 0204060 ?4 gain [db] 0 ? ?2 ? 10 30 50 sub-bright data 0204060 ?.8 ?.4 0 10 30 50 ?.6 ?.2 ?.7 ?.3 ?.5 ?.1 sub-cont data 04 8 12 ? gain [db] 3 2 0 ? ? ? 2 6 10 14 1 color data 0 ?0 gain [db] 10 0 ? ?0 ?5 5 ?5 data ? gain [db] 1 0 ? ? ? sub-color 048 12 26 10 14 3 2 bright data 0204060 ?.4 0.6 0.2 0.4 10 30 50 sub-bright = 0 sub-bright = 1f sub-bright = 3f ?.2 0 ? ?.8 ?.6 ?.2 0.1 20 40 60 10 30 50 * color off when data = 0 (?0db or less) potential difference between rch reference pulse level and black level [vp-p] potential difference between rch reference pulse level and black level [vp-p]
?47 CXA2050S reference pulse voltage (akboff = 0) rgbout black level voltage (akboff = 0, 1) ? gain [db] 2 ? ? b-drive, g-drive data 020406070 10 30 50 0 gamma cvin input amplitude [ire] 0 20 40 80 100 1.5 rch output [v] 4.5 3.0 4.0 60 3.5 2.0 2.5 gamma = 0 gamma = 1 gamma = 2 gamma = 3 1.0 g-cutoff, b-cutoff data 04 2.5 ikin reference pulse voltage [v] 4.1 3.7 612 3.9 814 10 2.7 2.9 3.1 3.3 3.5 2 akb open loop characteristics voltage applied r, g and b sample-and-hold capacitance pins [v] 3.0 5.5 v [v] 3.5 0 1.5 3.5 4.5 0.5 2.5 5.0 4.0 3.0 1.0 2.0 6.0 gch, bch ik clamp level rch 16
?48 CXA2050S package outline unit: mm sony code eiaj code jedec code package material lead treatment lead material package weight epoxy resin solder plating copper alloy package structure 64pin sdip (plastic) sdip-64p-051 sdip064-p-0750 9.0g 0.25 + 0.05 ?0.11 0?to 15 17.0 0.4 19.05 0.2 59.0max 57.6 1.778 4.0 0.25 0.5 min 0.45 0.2 1.0 0.2 2.54 min

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