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1/53 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. digital sound processors for fpd tvs 32bit audio dsp with built-in 4ch dac and asrc bu9408ks2 general description this lsi is the digital sound processor which made the use digital signal processing for fpd tvs. dsp of rohm original is used for the tv sound processor unit, and it excels in cost perform ance. a selection input of two lines is possible from four digital inputs. an asynchronous sa mpling rate converter(asrc) is built in one line. three digital outputs are built in. two audio da converters are built in. features digital signal processor unit word length: 32bit (data ram) the fastest machine cycle: 40.7ns (512fs, fs = 48khz) multiplier: 32 x 24 56bit adder: 32 + 32 32bit data ram: 256 x 32bit coefficient ram: 128 x 24bit sampling frequency: fs = 48khz master clock : 512fs 24.576mhz,fs=48khz digital signal input (stereo4lines): 16/20/24bit (i 2 s, left-justified, right-justified) digital signal output (stereo 3 lines): 16/20/24bit (i 2 s, left-justified, right-justified, s/pdif) .asynchronous sampling rate converter one line at stereo 32khz/44.1khz/48khz/88.2k hz/96khz/176.4khz/192khz 48khz audio dac one stereo output 24bit 8 x over-sampling digital filter + 1 bit delta sigma dac s/n 96db thd+n 0.005% sine-wave 1khz,0db audio 16bit dac one stereo output 24bit 8 x over-sampling digital filter + audio 16bit dac s/n 90db thd+n 0.03% sine-wave 1khz,0db the sound signal processing function for fpd tvs pre-scaler, dc cut hpf, channel mixer, p 2 volume (perfect pure volume), bass, middle, treble, simulated-stereo, surround, p 2 bass , p 2 treble , 7band parametric eq, master volume, l/r balance, post-s caler, output signal clipper ( p 2 volume , p 2 bass , and p 2 treble are the sound effect functi ons of rohm original.) applications flat panel tvs (lcd, plasma) no.12083eat02
technical note 2/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved.
technical note 3/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. ?
technical note 4/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. ? sda
technical note 5/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved.
technical note 6/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved.
technical note 7/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 1. command interface bu9408ks2 uses i 2 c-bus system for the command interface with a host cpu. the register of bu9408ks2 has write-mode and read-mode. bu9408ks2 specifies a slave address and 1 byte of select ion address, and it performs writing and read-out. the slave mode format of i 2 c bus is shown below. msb lsb msb lsb msb lsb s slave address a select address a data a p s : start condition slave address : after the slave address (7 bits) set up by i2ca dr, bit of a read-mode (h") and a write-mode (l") is attached, and a total of 8-bit data is sent. (msb first) a: acknowledge an acknowledge bit is added on to each bit of data transmitted. when data transmission is being done correctly, ?l? is transmitted. ?h? transmission means there was no acknowledge. select address: bu9408ks2 uses a 1- byte select address. (msb first) data: data byte, transmitted data (msb first) p: stop condition 1 1 - - 1 1 . . d d a a t t a a w w r r i i t t e e - - i i n n s slave address a select address a data a p : master to slave : slave to master addr=0 msb sda scl msb 6 5 lsb start condition when sda , scl=h stop condition when sda , scl=h
technical note 8/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. write-in procedure step clock master slave(bu9408ks2) note 1 start condition 2 7 slave address &h80 (&h82) 3 1 r/w (0) 4 1 acknowledge 5 8 select address write- in target register: 8bit 6 1 acknowledge 7 8 data 8bit write-in data 8 1 acknowledge 9 stop condition ? ?
technical note 9/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 1 1 - - 3 3 . . t buf t low t r t hd;sta s p t hd;dat t f t high t su;dat t su;sta sr t hd;sta t su;sto p sda scl
technical note 10/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 2. tone df1 ? dac line out dsp operation part control i/f i2c reset sys clk cg dsp clk s-p conv1 i2s_in1 evr pll1 audio dsp (bu9408ks2) p-s conv2 i2s_out_main s e l 2 spdif dec s/pdif amclk _out sel6 asrc mute1 error1 ??? func. main i2s_in2 s e l 1 p-eq df2 16bit dac hp out s-p conv2 p-s conv1 i2s_out_sub pll2 error2 i2s_in3 i2s_in4 mute2 mute3 s e l 5 s e l 4 s e l 3 datai1,bcki1,lrcki1 datai2,bcki2,lrcki2 datai3,bcki3,lrcki3 datai4,bcki4,lrcki4 amclko aoutl2,aoutr2 aoutl1,aoutr1 spdifo datamo,bcko,lrcko dataso (err2_bck, err1_lrc) s e l 7
technical note 11/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 2 2 - - 4 4 . . o o u u t t p p u u t t d d a a t t a a s s e e l l e e c c t t i i o o n n p p - - s s c c o o n n v v e e r r s s i i o o n n 2 2 f f o o r r d d a a t t a a s s o o t t e e r r m m i i n n a a l l ( ( s s e e l l 2 2 , , s s e e l l 5 5 ) ) default = 0 select address value operation description &h04 [ 5:4 ] 0 sub data output after dsp operation 1 main data output after dsp operation 2 data output before dsp operation 3 data output from df1 2 2 - - 5 5 . . p p - - s s c c o o n n v v e e r r s s i i o o n n 2 2 o o u u t t p p u u t t d d a a t t a a o o p p t t i i o o n n ( ( d d a a t t a a s s o o
technical note 12/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 2 2 - - 8 8 . . o o u u t t p p u u t t d d a a t t a a s s e e l l e e c c t t i i n n g g d d f f 2 2
technical note 13/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 2 2 - - 1 1 2 2 . . s s y y s s t t e e m m c c l l o o c c k k s s e e l l e e c c t t i i n n g g o o f f d d f f 1 1
technical note 14/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 3. 1 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 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 16bit 20bit 24bit 16bit 20bit 24bit lrcki bcki datai iis format 1 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 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 16bit 20bit 24bit 16bit 20bit 24bit lrcki bcki datai left-justified format 1 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 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 16bit 20bit 24bit lrcki bcki datai right-justified format 16bit 20bit 24bit 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 16bit 20bit 24bit lrcko bcko datao 48fs 16bit 20bit 24bit msb lsb s msb lsb s msb lsb s msb lsb s msb lsb s msb lsb s msb lsb s msb lsb s
technical note 15/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 3 3 - - 1 1 . . b b i i t t c c l l o o c c k k f f r r e e q q u u e e n n c c y y c c o o n n f f i i g g u u r r a a t t i i o o n n f f o o r r 3 3 - - l l i i n n e e s s e e r r i i a a l l i i n n p p u u t t default = 0 select address value operation description s-p conversion 1 &h0b [4] s-p conversion 2 &h0c [4] 0 64fs format 1 48fs format 3 3 - - 2 2 . . f f o o r r m m a a t t c c o o n n f f i i g g u u r r a a t t i i o o n n f f o o r r 3 3 - - l l i i n n e e s s e e r r i i a a l l i i n n p p u u t t default = 0 select address value operation description s-p conversion 1 &h0b [3:2] s-p conversion 2 &h0c [3:2] 0 iis format 1 left-justified format 2 right-justified format 3 3 - - 3 3 . . d d a a t t a a b b i i t t w w i i d d t t h h c c o o n n f f i i g g u u r r a a t t i i o o n n f f o o r r 3 3 - - l l i i n n e e s s e e r r i i a a l l i i n n p p u u t t default = 0 select address value operation description s-p conversion 1 &h0b [1:0] s-p conversion 2 &h0c [1:0] 0 16 bit 1 20 bit 2 24 bit
technical note 16/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4. pre scaler p 2 volume pseude stereo surround p 2 bass p 2 treble evr blance post scaler clipper main output digital audio processing signal flow channel mixer bass middle treble 7band p-eq post scaler clipper sub output evr balance hpf scaler 2 scaler 1 3band p-eq lpf channel mixer input1 01 +23.5db 0db -0.5db command gain 00 32 fe ff +24db -1db -103db - 30 31
technical note 17/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4 4 - - 2 2 . .
technical note 18/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4 4 - - 4 4 . . ? ? 0db v i v o v iinf v oinf v imin v omin v omax k (2) (3) (1) p2v off p2v_max p2v_min 00 - -32db -34db command gain 01 04 05 06 07 -30db -36db -38db -40db -42db 02 03 -48db -50db command gain 08 09 0c 0d 0e 0f -44db -46db -52db -54db -56db -58db 0a 0b -64db -66db command gain 10 11 14 15 16 17 -60db -62db -68db -70db -72db -74db 12 13 -80db -82db ?? 18 19 1c 1d 1e 1f -76db -78db -84db -86db -88db -90db 1a 1b 00 0db -2db -3db command gain 01 04 05 06 07 -1db -4db -5db -6db -7db 02 03 -10db -11db command gain 08 09 0c 0d 0e 0f -8db -9db -12db -13db -14db -15db 0a 0b -18db -19db command gain 10 11 14 15 16 17 -16db -17db -20db -21db -22db -23db 12 13 -26db -27db command gain 18 19 1c 1d 1e 1f -24db -25db -28db -29db -30db - 1a 1b
technical note 19/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. setting of k p2v_k sets the slop of d range. it sets the p2v_ma x = ?1eh? (-30db) and repres ents the output level v 0 -30db -26db -24db command gain 1 4 5 6 7 -28db -22db -20db -18db -16db 2 3 -10db -8db comman 8 9 c d e f -14db -12db -6db -4db -2db 0db a b gain 00 0db +2db +3db command gain 01 04 05 06 07 +1db +4db +5db +6db +7db 02 03 +10db +11db command gain 08 09 0c 0d 0e 0f +8db +9db +12db +13db +14db +15db 0a 0b +18db +19db command gain 10 11 14 15 16 17 +16db +17db +20db +21db +22db +23db 12 13 - - command gain 18 19 1c 1d 1e 1f +24db - - - - - 1a 1b 0 1ms 3ms 4ms command a_rate time 1 2ms 2 3 20ms 40ms command 4 5 5ms 10ms 6 7 a_rate time 0 0.25s 0.75s 1s command r_rate time 1 4 5 6 7 0.5s 1.25s 1.5s 2s 2.5s 2 3 5s 6s command 8 9 c d e f 3s 4s 7s 8s 9s 10s a b r_rate time
technical note 20/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. setting 1 of attack detection time a_time is the setting of the initiation of p 2 volume function?s tran sition operation. if output level at the time of transiting to (2) 0 0.5ms 1.5ms 2ms command a_time 1 1ms 2 3 5ms 6ms command 4 5 3ms 4ms 6 7 a_time 0 50ms 150ms 200ms command r_time 1 100ms 2 3 500ms 600ms command 4 5 300ms 400ms 6 7 r_time input v i time t output v o time t v omax field (2) field (2) field (3) the time from exceeding the attack operation detection level v max till the attack operation ' s transition to field (3) is completed the time from falling below the recovery operation detection level v max till the recovery operation ' s transition to field (2) is completed
technical note 21/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. setting 2 of the transition time at the time of attack a_rate_low is the setting of trans ition time when the state of p 2 volume function is transited to (2) input v i tme t output v o time t field (1) field (1) field (2) attack operation a_rate_low r_rate_low the time from exceeding the attack operation detection level v imin till the attack operation ' s transition to field (1) is completed the time from falling below the recovery operation detection level v imin till the recovery operation ' s transition to field (2) is completed v imin v omin 0 1ms 3ms 4ms command a_rate_low time 1 2ms 2 3 20ms 40ms command 4 5 5ms 10ms 6 7 a_rate_low time 0 1ms 3ms 4ms command r_rate_low time 1 2ms 2 3 20ms 40ms command 4 5 5ms 10ms 6 7 r_rate_low time 0 0.5ms 1.5ms 2ms command ar_time_low 1 1ms 2 3 5ms 6ms command 4 5 3ms 4ms 6 7 ar_time_low
technical note 22/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 0 100us 400us 1ms command detection time 1 200us 2 3 10ms 20ms command 4 5 2ms 5ms 6 7 detection time 0 over 1.002 over 0.502 over 0.355 command detection level 1 over 0.709 2 3 over 0.126 over 0.089 command 4 5 over 0.251 over 0.178 6 7 detection level
technical note 23/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4 4 - - 5 5 . .
technical note 24/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. setting of the start of transmitting to coefficient ram in the case of using the smooth transition, it is transmitted to the coefficient ram for smooth transition. in the case of not using of the smooth transition, it is transmitted directly to the coefficient ram. default = 0 select address value o perational explanation &h40 [ 0 ] 0 bass coefficient transmission stop 1 bass coefficient transmission start selection of frequency (f 0 ) default = 0eh select address operational explanation &h41 [ 5:0 ] selection of quality factor (q) default = 4h select address operational explanation &h42 [ 3:0 ] selection of gain default = 40h select address operational explanation &h43 [ 6:0 ] if the coefficient of b0, b1, b2, a1, and a2 exceeds 4, it may not operate normally. command frequency 00 01 02 03 04 05 06 07 command 25hz 28hz 20hz 22hz 40hz 45hz 32hz 35hz 08 09 0a 0b 0c 0d 0e 0f 63hz 70hz 50hz 56hz 100hz 110hz 80hz 90hz frequency command frequency 10 11 12 13 14 15 16 17 command 160hz 180hz 125hz 140hz 250hz 280hz 200hz 220hz 18 19 1a 1b 1c 1d 1e 1f 400hz 450hz 315hz 350hz 630hz 700hz 500hz 560hz frequency command frequency 20 21 22 23 24 25 26 27 command 1khz 1.1khz 800hz 900hz 1.6khz 1.8khz 1.25khz 1.4khz 28 29 2a 2b 2c 2d 2e 2f 2.5khz 2.8khz 2khz 2.2khz 4khz 4.5khz 3.15khz 3.5khz frequency command frequency 30 31 32 33 34 35 36 37 command 6.3khz 7khz 5khz 5.6khz 10khz 11khz 8khz 9khz 38 39 3a 3b 3c 3d 3e 3f 16khz 18khz 12.5khz 14khz - - 20khz - frequency 0.56 0.75 command quality factor 0 1 4 5 6 7 0.33 0.43 1.0 1.2 1.5 1.8 2 3 3.3 3.9 command 8 9 c d e f 2.2 2.7 4.7 5.6 6.8 8.2 a b quality factor -0.5db 0db command gain 41 64 +0.5db +18db 3f 40 3e -1db 1c -18db +1db 42
technical note 25/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4 4 - - 6 6 . .
technical note 26/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. selection of frequency (f 0 ) default = 0eh select address operational explanation &h45 [ 5:0 ] selection of quality factor (q) default = 4h select address operational explanation &h46 [ 3:0 ] selection of gain default = 40h select address operational explanation &h47 [ 6:0 ] if the coefficient of b0, b1, b2, a1, and a2 exceeds 4, it may not operate normally. command frequency 00 01 02 03 04 05 06 07 command 25hz 28hz 20hz 22hz 40hz 45hz 32hz 35hz 08 09 0a 0b 0c 0d 0e 0f 63hz 70hz 50hz 56hz 100hz 110hz 80hz 90hz frequency command frequency 10 11 12 13 14 15 16 17 command 160hz 180hz 125hz 140hz 250hz 280hz 200hz 220hz 18 19 1a 1b 1c 1d 1e 1f 400hz 450hz 315hz 350hz 630hz 700hz 500hz 560hz frequency command frequency 20 21 22 23 24 25 26 27 command 1khz 1.1khz 800hz 900hz 1.6khz 1.8khz 1.25khz 1.4khz 28 29 2a 2b 2c 2d 2e 2f 2.5khz 2.8khz 2khz 2.2khz 4khz 4.5khz 3.15khz 3.5khz frequency command frequency 30 31 32 33 34 35 36 37 command 6.3khz 7khz 5khz 5.6khz 10khz 11khz 8khz 9khz 38 39 3a 3b 3c 3d 3e 3f 16khz 18khz 12.5khz 14khz - - 20khz - frequency 0.56 0.75 command quality factor 0 1 4 5 6 7 0.33 0.43 1.0 1.2 1.5 1.8 2 3 3.3 3.9 command 8 9 c d e f 2.2 2.7 4.7 5.6 6.8 8.2 a b quality factor -0.5db 0db command gain 41 64 +0.5db +18db 3f 40 3e -1db 1c -18db +1db 42
technical note 27/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4 4 - - 7 7 . .
technical note 28/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. setting of the start of transmitting to coefficient ram in the case of using the smooth transition, it is transmitted to the coefficient ram for smooth transition. in the case of not using of the smooth transition, it is tr ansmitted to the direct coefficient ram. default = 0 select address value o perational explanation &h48 [ 0 ] 0 treble coefficient transmission stop 1 treble coefficient transmission start selection of frequency (f 0 ) default = 0eh select address operational explanation &h49 [ 5:0 ] selection of quality factor (q) default = 4h select address operational explanation &h4a [ 3:0 ] selection of gain default = 40h select address operational explanation &h4b [ 6:0 ] if the coefficient of b0, b1, b2, a1, and a2 exceeds 4, it may not operate normally. command frequency 00 01 02 03 04 05 06 07 command 25hz 28hz 20hz 22hz 40hz 45hz 32hz 35hz 08 09 0a 0b 0c 0d 0e 0f 63hz 70hz 50hz 56hz 100hz 110hz 80hz 90hz frequency command frequency 10 11 12 13 14 15 16 17 command 160hz 180hz 125hz 140hz 250hz 280hz 200hz 220hz 18 19 1a 1b 1c 1d 1e 1f 400hz 450hz 315hz 350hz 630hz 700hz 500hz 560hz frequency command frequency 20 21 22 23 24 25 26 27 command 1khz 1.1khz 800hz 900hz 1.6khz 1.8khz 1.25khz 1.4khz 28 29 2a 2b 2c 2d 2e 2f 2.5khz 2.8khz 2khz 2.2khz 4khz 4.5khz 3.15khz 3.5khz frequency command frequency 30 31 32 33 34 35 36 37 command 6.3khz 7khz 5khz 5.6khz 10khz 11khz 8khz 9khz 38 39 3a 3b 3c 3d 3e 3f 16khz 18khz 12.5khz 14khz - - 20khz - frequency 0.56 0.75 command quality factor 0 1 4 5 6 7 0.33 0.43 1.0 1.2 1.5 1.8 2 3 3.3 3.9 command 8 9 c d e f 2.2 2.7 4.7 5.6 6.8 8.2 a b quality factor -0.5db 0db command gain 41 64 +0.5db +18db 3f 40 3e -1db 1c -18db +1db 42
technical note 29/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4 4 - - 8 8 . . 01 +23.5db 0db -0.5db command gain 00 32 fe ff +24db -1db -103db - 30 31 lch phase shifter rch phase shifter effect gain (high/low/ off lch rch rch lch effect gain (high/low/ off lch rch + + l-r - phase shifter effect gain lpf + + - + rch lch + loop
technical note 30/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. on/off of surround function default = 0 select address value o perational explanation &h70 [ 7 ] 0 turning the surround effect off 1 turning the surround effect on setting of using the loop default = 0 select address value o perational explanation &h70 [ 5 ] 0 not using of loop 1 using of loop setting of surround gain default = fh select address operational explanation &h70 [ 3:0 ] 00 d b command gain 1 2 3 4 5 6 7 command gain -2db -3db -1db -6db -7db -4db -5db 8 9 a b c d e f -10db -11db -8db -9db -14db -15db -12db -13db
technical note 31/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4 4 - - 1 1 1 1 . . p p 2 2 b b a a s s s s ( ( p p e e r r f f e e c c t t p p u u r r e e b b a a s s s s : : d d e e e e p p b b a a s s s s e e q q u u a a l l i i z z e e r r ) ) it is the deep bass equalizer making it possible that even thin- screen tv, by which the enclosure of speaker is restricted, can reproduce the real sound close to powerful deep bass & original sound. solid & clear deep bass with little feeling of distortion is re alized. even boosting of bass does not interfere with vocal band , therefore rich and natural deep band is realized. on/off of p 2 bass function default = 0 select address value o perational explanation &h73 [ 7 ] 0 not using of p 2 bass function 1 using of p 2 bass function setting of p 2 bass smooth transition time default = 0 select address value o perational explanation &h73 [ 3:2 ] 0 21.4ms 1 10.7ms 2 5.4ms 3 2.7ms p 2 bass smooth transition control default = 0 select address value o perational explanation &h77 [ 1:0 ] 0 p 2 bass smooth transition stop 1 setting of the values into coefficient ram for p 2 bass smooth transition 2 p 2 bass smooth transition start what is necessary is the time of waiting, which is more than the time selected by the setting of p 2 bass smooth transition time, from the time the p 2 bass smooth transition start (&h77[1:0] = ?2?) is executed until the following command is sent. please make sure to perform the p 2 bass smooth transition stop (&h77[1:0] = ?0?) after the smooth transition is completed. p 2 bass gain f hpf??? lpf??? ?`?
technical note 32/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. setting of p 2 bass deep bass gain default = 00h select address operational explanation &h74 [ 7:4 ] setting of p 2 bass 0 0db +2db +3db command gain 1 4 5 6 7 +1db +4db +5db +6db +7db 2 3 +10db +11db command 8 9 c d e f +8db +9db +12db +13db +14db +15db a b gain 0 -4db 0db +2db command gain 1 -2db 2 3 +8db +10db command 4 5 +4db +6db 6 7 gain
technical note 33/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4 4 - - 1 1 2 2 . . ? ? ? 0 0db +2db +3db command gain 1 4 5 6 7 +1db +4db +5db +6db +7db 2 3 +10db +11db command 8 9 c d e f +8db +9db +12db +13db +14db +15db a b gain
technical note 34/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4 4 - - 1 1 3 3 . . ? ? f band1 band2 band3 band4 band5 band6 band7 level 18db (0.5db step) 63 160 400 1k 2.5k 6.3k 16k (hz) 01 +23.5db 0db -0.5db command gain 00 32 fe ff +24db -1db -103db - 30 31
technical note 35/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. selection of frequency (f 0 ) default = 0eh select address operational explanation bit [ 5:0 ] it sets to all band selection of quality factor (q) default = 4h select address operational explanation bit [ 3:0 ] it sets to every band selection of gain default = 40h select address operational explanation bit [ 6:0 ] it sets to every band if the coefficient of b0, b1, b2, a1, and a2 exceeds 4, it may not operate normally. the select address of each band is shown in the table below: band1 band2 band3 band4 band5 band6 band7 selection of filter type bit [ 7:6 ] &h50h &h54h &h58h &h5ch &h60h &h64h &h68h setting of the start of transmitting to coefficient ram bit [ 0 ] f(frequency) selection bit [ 5:0 ] &h51h &h55h &h59h &h5dh &h61h &h65h &h69h q(quality factor) selection bit [ 3:0 ] &h52h &h56h &h5ah &h5eh &h62h &h66h &h6ah gain selection bit [ 6:0 ] &h53h &h57h &h5bh &h5fh &h63h &h67h &h6bh command frequency 00 01 02 03 04 05 06 07 command 25hz 28hz 20hz 22hz 40hz 45hz 32hz 35hz 08 09 0a 0b 0c 0d 0e 0f 63hz 70hz 50hz 56hz 100hz 110hz 80hz 90hz frequency command frequency 10 11 12 13 14 15 16 17 command 160hz 180hz 125hz 140hz 250hz 280hz 200hz 220hz 18 19 1a 1b 1c 1d 1e 1f 400hz 450hz 315hz 350hz 630hz 700hz 500hz 560hz frequency command frequency 20 21 22 23 24 25 26 27 command 1khz 1.1khz 800hz 900hz 1.6khz 1.8khz 1.25khz 1.4khz 28 29 2a 2b 2c 2d 2e 2f 2.5khz 2.8khz 2khz 2.2khz 4khz 4.5khz 3.15khz 3.5khz frequency command frequency 30 31 32 33 34 35 36 37 command 6.3khz 7khz 5khz 5.6khz 10khz 11khz 8khz 9khz 38 39 3a 3b 3c 3d 3e 3f 16khz 18khz 12.5khz 14khz - - 20khz - frequency 0.56 0.75 command quality factor 0 1 4 5 6 7 0.33 0.43 1.0 1.2 1.5 1.8 2 3 3.3 3.9 command 8 9 c d e f 2.2 2.7 4.7 5.6 6.8 8.2 a b quality factor -0.5db 0db command gain 41 64 +0.5db +18db 3f 40 3e -1db 1c -18db +1db 42
technical note 36/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4 4 - - 1 1 5 5 . . 01 +23.5db 0db -0.5db command gain 00 32 fe ff +24db -1db -103db - 30 31 -1db 0db 7e 0db - ff 0db - 0db -126db 0db 0db 0db 0db 0db 0db -1db -126db 80 7f 01 81 command lch 00 fe rch 01 +23.5db 0db -0.5db command gain 00 32 fe ff +24db -1db -103db - 30 31
technical note 37/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4 4 - - 1 1 8 8 . . 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 1 0111 1111111111111111111 0 1000 0000000000000000000 clip_level[15:0] ~clip_level[15:0] 0000000 1111111 0 1 maximum value minimum value a positive clip level a negative clip level clip level
technical note 38/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4 4 - - 2 2 0 0 . . 0 60hz 100hz 120hz command fc 1 80hz 2 3 240hz 280hz command 4 5 160hz 200hz 6 7 fc
technical note 39/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4 4 - - 2 2 2 2 . . f band1 band2 band3 level 18db (0.5db step) 63 80 100 (hz) command frequency 00 01 02 03 04 05 06 07 command 25hz 28hz 20hz 22hz 40hz 45hz 32hz 35hz 08 09 0a 0b 0c 0d 0e 0f 63hz 70hz 50hz 56hz 100hz 110hz 80hz 90hz frequency command frequency 10 11 12 13 14 15 16 17 command 160hz 180hz 125hz 140hz 250hz 280hz 200hz 220hz 18 19 1a 1b 1c 1d 1e 1f 400hz 450hz 315hz 350hz 630hz 700hz 500hz 560hz frequency command frequency 20 21 22 23 24 25 26 27 command 1khz 1.1khz 800hz 900hz 1.6khz 1.8khz 1.25khz 1.4khz 28 29 2a 2b 2c 2d 2e 2f 2.5khz 2.8khz 2khz 2.2khz 4khz 4.5khz 3.15khz 3.5khz frequency command frequency 30 31 32 33 34 35 36 37 command 6.3khz 7khz 5khz 5.6khz 10khz 11khz 8khz 9khz 38 39 3a 3b 3c 3d 3e 3f 16khz 18khz 12.5khz 14khz - - 20khz - frequency 0.56 0.75 command quality factor 0 1 4 5 6 7 0.33 0.43 1.0 1.2 1.5 1.8 2 3 3.3 3.9 command 8 9 c d e f 2.2 2.7 4.7 5.6 6.8 8.2 a b quality factor
technical note 40/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. selection of gain default = 40h select address o perating explanation bit [ 6:0 ] it sets to all band if the coefficient of b0, b1, b2, a1, and a2 exceeds 4, it may not operate normally. select address of every band is as in chart below band1 band2 band3 selection of filter type bit [ 7:6 ] &h80h &h84h &h88h transfer start setting to coefficient ram bit [ 0 ] f (frequency) selection bit [ 5:0 ] &h81h &h85h &h89h q (quality factor) selection bit [ 3:0 ] &h82h &h86h &h8ah gain selection -0.5db 0db command gain 41 64 +0.5db +18db 3f 40 3e -1db 1c -18db +1db 42 01 +23.5db 0db -0.5db command gain 00 32 fe ff +24db -1db -103db - 30 31
technical note 41/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4 4 - - 2 2 4 4 . . -1db 0db 7e 0db - ff 0db - 0db -126db 0db 0db 0db 0db 0db 0db -1db -126db 80 7f 01 81 command lch 00 fe rch 01 +23.5db 0db -0.5db command gain 00 32 fe ff +24db -1db -103db - 30 31
technical note 42/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4 4 - - 2 2 6 6 . . 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 1 0111 1111111111111111111 0 1000 0000000000000000000 clip_level[15:0] ~clip_level[15:0] 0000000 1111111 0 1 maximum value minimum value a positive clip level a negative clip level clip level
technical note 43/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4 4 - - 2 2 7 7 . . ? z -1 z -1 a1 b1 b0 z -1 z -1 a2 b2 coefficient number 14 h. 15 h. 16 h. 17 h 18 h band1 (main) z -1 z -1 a1 b1 b0 z -1 z -1 a2 b2 coefficient number 19 h. 1a h. 1b h . 1c h 1d h z -1 z -1 a1 b1 b0 z -1 z -1 a2 b2 coefficient number 1e h. 1f h. 20 h. 21 h 22 h z -1 z -1 a1 b1 b0 z -1 z -1 a2 b2 coefficient number 23 h. 24 h. 25 h. 26 h 27 h z -1 z -1 a1 b1 b0 z -1 z -1 a2 b2 coefficient number 28 h. 29 h. 2a h . 2b h 2c h z -1 z -1 a1 b1 b0 z -1 z -1 a2 b2 coefficient number 2d h . 2e h. 2f h. 30 h 31 h z -1 z -1 a1 b1 b0 z -1 z -1 a2 b2 coefficient number 32 h . 33 h. 34 h. 35 h 36 h band2 (main) band3 (main) band4 (main) band5 (main) band6 (main) ban d7 (main) + + + + + + + + + + + + + + + + + + + + + + + + + + + + main output7band parametric eq z -1 z -1 a1 b1 b0 z -1 z -1 a2 b2 coefficient number 37 h . 38 h . 39 h . 3a h 3b h z -1 z -1 a1 b1 b0 z -1 z -1 a2 b2 coefficient number 3c h . 3d h . 3e h . 3f h 40 h z -1 z -1 a1 b1 b0 z -1 z -1 a2 b2 coefficient number 41 h . 42 h . 43 h . 44 h band1 (sub) band2 (sub) band3 (sub) + + + + + + + + + + + + sub output3band parametric eq 45 h
technical note 44/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 4 4 - - 2 2 8 8 . .
technical note 45/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 5. 1 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 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 16bit 20bit 24bit 16bit 20bit 24bit lrcko bcko datao iis format 1 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 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 16bit 20bit 24bit 16bit 20bit 24bit lrcko bcko datao left-justified format 1 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 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 16bit 20bit 24bit lrcko bcko datao right-justified format 16bit 20bit 24bit msb lsb s msb lsb s msb lsb s msb lsb s msb lsb s msb lsb s
technical note 46/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 6. x8 oversampling digital filter 16bit dac aoutr1 (16pin) aoutl1 (17pin) df2 pre-scaler volume chanel mixer x8 oversampling digital filter ?dac aoutr2 (20pin) aoutl2 (22pin) df1 pre-scaler volume chanel mixer
technical note 47/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 6 6 - - 3 3 . . c c h h a a n n n n e e l l m m i i x x e e r r performs mixing configuration of left and right c hannel sounds of digital signals input to the dac. stereo signals are converted to monaural here. mixes dac lch input data. default = 0 select address value operation description df1
technical note 48/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 7. mute function by mute1b, mute2b and mute3b terminal bu9408ks2 has a mute function by an external terminal. it's possible to mute dsp's main and sub digita l output by mute1b (12pin) terminal to ?l?. it's possible to mute df1+ ? ?
technical note 49/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 8. c c o o m m m m a a n n d d s s t t r r a a n n s s m m i i t t t t e e d d a a f f t t e e r r r r e e s s e e t t r r e e l l e e a a s s e e the following commands must be transmitted after reset release, including after power supply stand-up. 0 ? ? ? ?
technical note 50/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 9. audio interface signal specification lrck bck tsu;sd data tblrdg tlbrdg thd;sd tbckh tbckl
technical note 51/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. 10. notes at the time of reset since the state of ic is not decided, please make it into reset b=l at the time of a power supply injection, and surely apply reset.
technical note 52/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved.
technical note 53/53 bu9408ks2 www.rohm.com 2012.03 - rev. a ? 2012 rohm co., ltd. all rights reserved. (unit : mm) sqfp-t52 39 27 26 14 40 52 13 1 0.15 1.4 0.1 0.3 0.1 0.1 0.1 0.5 0.65 12.0 0.3 0.125 0.1 10.0 0.2 12.0 0.3 10.0 0.2 ? order quantity needs to be multiple of the minimum quantity. tray (with dry pack) container quantity direction of feed 1000pcs direction of product is fixed in a tray 1pin
datasheet d a t a s h e e t notice - ge rev.002 ? 2014 rohm co., ltd. all rights reserved. notice precaution on using rohm products 1. our products are designed and manufac tured for application in ordinary elec tronic equipments (such as av equipment, oa equipment, telecommunication equipment, home electroni c appliances, amusement equipment, etc.). if you intend to use our products in devices requiring ex tremely high reliability (such as medical equipment (note 1) , transport equipment, traffic equipment, aircraft/spacecra ft, nuclear power controllers, fuel c ontrollers, car equipment including car accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or serious damage to property (?specific applications?), please consult with the rohm sale s representative in advance. unless otherwise agreed in writing by rohm in advance, ro hm shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any ro hm?s products for specific applications. (note1) medical equipment classification of the specific applications japan usa eu china class class class b class class class 2. rohm designs and manufactures its products subject to strict quality control system. however, semiconductor products can fail or malfunction at a certain rate. please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe desi gn against the physical injury, damage to any property, which a failure or malfunction of our products may cause. the following are examples of safety measures: [a] installation of protection circuits or other protective devices to improve system safety [b] installation of redundant circuits to reduce the impact of single or multiple circuit failure 3. our products are designed and manufactured for use under standard conditions and not under any special or extraordinary environments or conditio ns, as exemplified below. accordin gly, rohm shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of an y rohm?s products under any special or extraordinary environments or conditions. if you intend to use our products under any special or extraordinary environments or conditions (as exemplified bel ow), your independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] use of our products in any types of liquid, incl uding water, oils, chemicals, and organic solvents [b] use of our products outdoors or in places where the products are exposed to direct sunlight or dust [c] use of our products in places where the products ar e exposed to sea wind or corrosive gases, including cl 2 , h 2 s, nh 3 , so 2 , and no 2 [d] use of our products in places where the products are exposed to static electricity or electromagnetic waves [e] use of our products in proximity to heat-producing components, plastic cords, or other flammable items [f] sealing or coating our products with resin or other coating materials [g] use of our products without cleaning residue of flux (ev en if you use no-clean type fluxes, cleaning residue of flux is recommended); or washing our products by using water or water-soluble cleaning agents for cleaning residue after soldering [h] use of the products in places subject to dew condensation 4. the products are not subjec t to radiation-proof design. 5. please verify and confirm characteristics of the final or mounted products in using the products. 6. in particular, if a transient load (a large amount of load applied in a short per iod of time, such as pulse. is applied, confirmation of performance characteristics after on-boar d mounting is strongly recomm ended. avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading c ondition may negatively affect product performance and reliability. 7. de-rate power dissipation (pd) depending on ambient temper ature (ta). when used in seal ed area, confirm the actual ambient temperature. 8. confirm that operation temperat ure is within the specified range descr ibed in the product specification. 9. rohm shall not be in any way responsible or liable for fa ilure induced under deviant condi tion from what is defined in this document. precaution for mounting / circuit board design 1. when a highly active halogenous (chlori ne, bromine, etc.) flux is used, the resi due of flux may negatively affect product performance and reliability. 2. in principle, the reflow soldering method must be used; if flow soldering met hod is preferred, please consult with the rohm representative in advance. for details, please refer to rohm mounting specification
datasheet d a t a s h e e t notice - ge rev.002 ? 2014 rohm co., ltd. all rights reserved. precautions regarding application examples and external circuits 1. if change is made to the constant of an external circuit, pl ease allow a sufficient margin c onsidering variations of the characteristics of the products and external components, including transient characteri stics, as well as static characteristics. 2. you agree that application notes, re ference designs, and associated data and in formation contained in this document are presented only as guidance for products use. theref ore, in case you use such information, you are solely responsible for it and you must exercise your own independent verification and judgment in the use of such information contained in this document. rohm shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. precaution for electrostatic this product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. please take proper caution in your manufacturing process and storage so that voltage exceeding t he products maximum rating will not be applied to products. please take special care under dry condit ion (e.g. grounding of human body / equipment / solder iron, isolation from charged objects, se tting of ionizer, friction prevention and temperature / humidity control). precaution for storage / transportation 1. product performance and soldered connections may deteriora te if the products are stor ed in the places where: [a] the products are exposed to sea winds or corros ive gases, including cl2, h2s, nh3, so2, and no2 [b] the temperature or humidity exceeds those recommended by rohm [c] the products are exposed to di rect sunshine or condensation [d] the products are exposed to high electrostatic 2. even under rohm recommended storage c ondition, solderability of products out of recommended storage time period may be degraded. it is strongly recommended to confirm sol derability before using products of which storage time is exceeding the recommended storage time period. 3. store / transport cartons in the co rrect direction, which is indicated on a carton with a symbol. otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4. use products within the specified time after opening a hum idity barrier bag. baking is required before using products of which storage time is exceeding the recommended storage time period. precaution for product label qr code printed on rohm products label is for rohm?s internal use only. precaution for disposition when disposing products please dispose them proper ly using an authorized industry waste company. precaution for foreign exchange and foreign trade act since our products might fall under cont rolled goods prescribed by the applicable foreign exchange and foreign trade act, please consult with rohm representative in case of export. precaution regarding intellectual property rights 1. all information and data including but not limited to application example contain ed in this document is for reference only. rohm does not warrant that foregoi ng information or data will not infringe any intellectual property rights or any other rights of any third party regarding such information or data. rohm shall not be in any way responsible or liable for infringement of any intellectual property rights or ot her damages arising from use of such information or data.: 2. no license, expressly or implied, is granted hereby under any intellectual property rights or other rights of rohm or any third parties with respect to the information contained in this document. other precaution 1. this document may not be reprinted or reproduced, in whol e or in part, without prior written consent of rohm. 2. the products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written consent of rohm. 3. in no event shall you use in any wa y whatsoever the products and the related technical information contained in the products or this document for any military purposes, incl uding but not limited to, the development of mass-destruction weapons. 4. the proper names of companies or products described in this document are trademarks or registered trademarks of rohm, its affiliated companies or third parties.
datasheet datasheet notice ? we rev.001 ? 2014 rohm co., ltd. all rights reserved. general precaution 1. before you use our pro ducts, you are requested to care fully read this document and fully understand its contents. rohm shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny rohms products against warning, caution or note contained in this document. 2. all information contained in this docume nt is current as of the issuing date and subj ec t to change without any prior notice. before purchasing or using rohms products, please confirm the la test information with a rohm sale s representative. 3. the information contained in this doc ument is provi ded on an as is basis and rohm does not warrant that all information contained in this document is accurate an d/or error-free. rohm shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information.
datasheet part number bu9408ks2 package sqfp-t52 unit quantity 1000 minimum package quantity 1000 packing type tray constitution materials list inquiry rohs yes bu9408ks2 - web page distribution inventory

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