asahi kasei [akd4646-b] 2006 / 08 - 1 - general description akd4646-b is an evaluation board for the AK4646, stereo codec with built-in mic/spk amplifier. the akd4646-b can evaluate a/d converter and d/a converter separately in addition to loop-back mode (a/d o d/a). the akd4646-b also has the digital audio interface and can achieve the interface with digital audio systems via opt-connector. ? ordering guide akd4646-b --- evaluation board for AK4646 (cable for connecting with printer port of ibm-at compatible pc and control software are packed with this. this control software does not operate on windows nt.) function x dit/dir with optical input/output x 10pin header for serial control mode 10pin header control data 10pin header 3.3v gnd min ak4114 opt in opt out AK4646 lout/ rout 5v regulator lin1/ rin1 lin2/ rin2 dsp figure 1. akd4646-b block diagram * circuit diagram and pcb layout are attached at the end of this manual AK4646 evaluation board rev.1 a kd4646-b
asahi kasei [akd4646-b] 2006 / 08 - 2 - evaluation board manual ? operation sequence 1) set up the power supply lines. [vcc] (red) = 5.0v (or 3.3v) [agnd] (black) = 0v [dgnd] (black) = 0v each supply line should be distribut ed from the power supply unit. when the power is supplied to the AK4646 via the regulator, jp21 should be set to reg side and vcc should be 5.0v. (when the power is supplied from vcc jack to the AK4646 directly, jp21 should be set to vcc side and vcc should be 3.3v.) 2) set up the evaluation mode, jumper pins. (see the followings.) 3) power on. the AK4646 and ak4114 should be reset once bringing sw1 l upon power-up. ? evaluation mode (1) slave mode (1-1) evaluation of recording block (mic, adc) using dit of ak4114 (1-2) evaluation of playback bl ock (spk, lout) using dir of ak4114 (1-3) evaluation of loop-back using ak4114 (1-4) all interface signals including master clock are fed externally. the ak4114?s audio interface format is fixed to lsb justified. (1-1) evaluation of recording block using dit of ak4114 port2 (dit) and x1 (xtal) are used. dit generates audio bi-phase signal from received data and which is output through optical connector (totx141). nothing should be connected to port1 (dir) and port3 (dsp). jp6 bick2 jp7 lrck2 jp11 sdti ad c dir jp8 lrck jp9 mclk jp10 bick (1-2) evaluation of playback block using dir of ak4114 port1 (dir) is used. nothing should be connected to port3 (dsp). jp6 bick2 jp7 lrck2 jp11 sdti ad c dir jp8 lrck jp9 mclk jp10 bick the ak4114 operates at fs of 32khz or more. if the fs is slower than 32khz, any other evaluation mode without using dir should be used.
asahi kasei [akd4646-b] 2006 / 08 - 3 - (1-3) evaluation of loop-back using ak4114 xtal oscillator (x1) is used. nothing should be connected to port1 (dir) and port3 (dsp). jp6 bick2 jp7 lrck2 jp11 sdti ad c dir jp8 lrck jp9 mclk jp10 bick the ak4114 operates at fs of 32khz or more. if the fs is slower than 32khz, any other evaluation mode without using dir should be used. (1-4) all interface signals including master clock are fed externally. port3 (dsp) is used. nothing shoul d be connected to port1 (dir). jp6 bick2 jp7 lrck2 jp11 sdti ad c dir jp8 lrck jp9 mclk jp10 bick (2) master mode (2-1) evaluation of loop-back using mclk of ak4114 (2-2) master clock is fed externally (2-1) evaluation of loop-back using mclk of ak4114 xtal oscillator (x1) is used. nothing should be connected to port1 (dir) and port3 (dsp). it can be evaluated at internal loop-back mode (loop bit = 1). it is possible to evaluate at various sampling frequencies using built-in AK4646s pll. jp6 bick2 jp7 lrck2 jp11 sdti ad c dir jp8 lrck jp9 mclk jp10 bick (2-2) master clock is fed externally port3 (dsp) is used and mclk is fed from port3. not hing should be connected to port1 (dir). it can be evaluated at internal loop-back mode (loop bit = 1). it is possible to evaluate at various sampling frequencies using built-in AK4646s pll. jp6 bick2 jp7 lrck2 jp11 sdti ad c dir jp8 lrck jp9 mclk jp10 bick
asahi kasei [akd4646-b] 2006 / 08 - 4 - ? other jumper pins set up 1. jp1 (gnd) : connection between agnd and dgnd. open : both grounds are separated on board. short : both grounds are connected on board. 2. jp2,jp3 : connection of mic power. open: mic power is not connected. short : mic power is connected. 3. jp4,jp5 : select speaker type. open : piezo speaker short : dynamic speaker ? the function of the toggle sw [sw1] (pdn): power down of AK4646 and ak4114. keep h during normal operation. ? indication for led [led1] (erf): monitor int0 pin of the ak4114. led turns on when some error has occurred to ak4114.
asahi kasei [akd4646-b] 2006 / 08 - 5 - ? serial control the AK4646 can be controlled via the printer port (paralle l port) of ibm-at compatible pc. connect port4 (ctrl) with pc by 10 wire flat cable packed with the akd4646. connect csn cclk cdti 10pin header 10pin connector 10 wire flat cable pc akd4646-b figure 2. connect of 10 wire flat cable
asahi kasei [akd4646-b] 2006 / 08 - 6 - ? analog input/output circuits (1) input circuits 1. min input circuit + c14 1u r15 20k min 6 4 3 j2 min figure 3. min input circuit 2. line1 input circuit lin1 rin1 r2 2.2k r1 2.2k jp2 lin1 jp3 rin1 + c2 1u + c3 1u mpwr 6 4 3 j5 lin1/rin1 figure 4. lin1/rin1 input circuit 3. line2 input circuit + c19 1u lin2 rin2 6 4 3 j3 lin2/rin2 + c18 1u figure 5. lin2/rin2 input circuit
asahi kasei [akd4646-b] 2006 / 08 - 7 - (2) output circuits 1. stereo line output circuit + c20 1u r21 220 r24 20k rout lout 6 4 3 j6 lout/rou t jp20 lineout r22 20k + c21 1u r23 220 figure 6. stereo line output circuit 2. speaker output circuit piezo(ext) j4 spk-jack dynamic piezo(ext) spn spp spp 020s16 spk1 cn1 1 2 n p r19 10 d1 d2 r20 10 spn dynamic figure 7. speaker output circuit
asahi kasei [akd4646-b] 2006 / 08 - 8 - control software manual ? set-up of evaluation board and control software 1. set up the akd4646-b according to previous term. 2. connect ibm-at compatible pc with akd4646-b by 10-line type flat cable (packed with akd4646-b). take care of the direction of 10pin header. (please install the driver in the cd-rom when this control software is used on windows 2000/xp. please refer installation manual of control software driv er by akm devi ce control software. in case of windows95/98/me, this installation is not needed. this control soft ware does not operate on windows nt.) 3. insert the cd-rom labeled akd4646-b evaluation kit in to the cd-rom drive. 4. access the cd-rom drive and double-click the ic on of akd4646.exe to set up the control program. 5. then please evaluate according to the follows. ? operation flow keep the following flow. 1. set up the control program according to explanation above. 2. click port reset button. 3. click write default button ? explanation of each buttons 1. [port reset] : set up the port. when this is pus hed, the printer port or usb port is selected automatically. 2. [write default] : initialize the register of the AK4646 3. [all write] : write all registers that is currently displayed 4. [function1] : dialog to write data by keyboard operation. 5. [function2] : dialog to evaluate ipga and attl/attr. 6. [function3] : the sequence of register setting can be set and executed. 7. [function4] : the sequence that is created on [function3] can be assigned to buttons and executed. 8. [function5] : the register setting that is created by [save] function on main window can be assigned to buttons and executed. 9.[write] : dialog to write data by mouse operation. 10.[save] : save the current register setting. 11.[open] : write the save values to all register. ? indication of data input data is indicated on the register map. red letter i ndicates h or 1 and blue one indi cates l or 0. blank is the part that is not defined in the datasheet. ? explanation of each dialog
asahi kasei [akd4646-b] 2006 / 08 - 9 - 1. [write dialog] : dialog to write data by mouse operation there are dialogs corresponding to each register. click the [write] button corresponding to each register to set up the dialog. if you check the check box, data becomes h or 1. if not, l or 0. if you want to write the input data to the AK4646, click [ok] button. if not , click [cancel] button. 2. [function1 dialog] : dialog to write data by keyboard operation address box: input registers address in 2 figures of hexadecimal. data box: input regist ers data in 2 figures of hexadecimal. if you want to write the input data to the AK4646, click [ok] button. if not , click [cancel] button. 3. [function2 dialog] : dialog to evaluate datt there are dialogs corresponding to regi ster of 09h, 0ah, 0ch, and 0dh. address box: input registers address in 2 figures of hexadecimal. start data box: input start s data in 2 figures of hexadecimal. end data box: input end dat a in 2 figures of hexadecimal. interval box: data is written to the AK4646 by this interval. step box: data changes by this step. mode select box: if you check this check box, data reaches end data, and returns to start data. [example] start data = 00, end data = 09 data flow: 00 01 02 03 04 05 06 07 08 09 09 08 07 06 05 04 03 02 01 00 if you do not check this check box, data reaches end data, but does not return to start data. [example] start data = 00, end data = 09 data flow: 00 01 02 03 04 05 06 07 08 09 if you want to write the input data to the AK4646, click [ok] button. if not , click [cancel] button.
asahi kasei [akd4646-b] 2006 / 08 - 10 - 4. [save] and [open] 4-1. [save] all of current register setting values display ed on the main window are saved to the file. the extension of file name is akr. (1) click [save] button. (2) set the file name and click [save] button. the extension of file name is akr. 4-2. [open] the register setting values saved by [save] are written to the AK4646. the file type is the same as [save]. (1) click [open] button. (2) select the file (*.akr) and click [open] button.
asahi kasei [akd4646-b] 2006 / 08 - 11 - 5. [function3 dialog] the sequence of register setting can be set and executed. (1) click [f3] button. (2) set the control sequence. set the address, data and interval time. set -1 to the address of the step where the sequence should be paused. (3) click [start] button. then this sequence is executed. the sequence is paused at the step of interval="-1". click [start] button, the sequence restarts from the paused step. this sequence can be saved and opened by [save] and [open] butt on on the function3 window. the extension of file name is aks. figure 8. window of [f3]
asahi kasei [akd4646-b] 2006 / 08 - 12 - 6. [function4 dialog] the sequence file (*.aks) saved by [function3] can be listed up to 10 files, assigned to buttons and then executed. when [f4] button is clicked, the window as shown in figure 10 opens. figure 9. [f4] window
asahi kasei [akd4646-b] 2006 / 08 - 13 - 6-1. [open] buttons on left side and [start] buttons (1) click [open] button and select th e sequence file (*.aks) saved by [function3]. the sequence file name is displayed as shown in figure 11. ( in case that the selected sequence file name is dac_stereo_on.aks) figure 10. [f4] window(2) (2) click [start] button, then the sequence is executed. 6-2. [save] and [open] buttons on right side [save] : the name assign of sequence file displayed on [functi on4] window can be saved to the file. the file name is *.ak4. [open] : the name assign of sequence file(*.ak4) saved by [save] is loaded. 6-3. note (1) this function doesn't support the pause function of sequence function. (2) all files used by [save] and [open] function on right side need to be in the same folder. (3) when the sequence is changed in [function3], the sequence file (*.aks) should be loaded again in order to reflect the change.
asahi kasei [akd4646-b] 2006 / 08 - 14 - 7. [function5 dialog] the register setting file(*.akr) saved by [save] function on main window can be listed up to 10 files, assigned to buttons and then executed. when [f5] button is clicked, the window as shown in figure 12 opens. figure 11. [f5] window 7-1. [open] buttons on left side and [write] button (1) click [open] button and select the register setting file (*.akr). the register setting file name is displayed as shown in figure 13. (in case that the selected file name is dac_output.akr) (2) click [write] button, then the register setting is executed.
asahi kasei [akd4646-b] 2006 / 08 - 15 - figure 12. [f5] windows(2) 7-2. [save] and [open] buttons on right side [save] : the name assign of register setting file displayed on [function5] window can be saved to the file. the file name is *.ak5. [open] : the name assign of register setti ng file(*.ak5) saved by [save] is loaded. 7-3. note (1) all files used by [save] and [open] function on right side need to be in the same folder. (2) when the register setting is changed by [save] button on the main window, the register setting file (*.akr) should be loaded again in order to reflect the change.
asahi kasei [akd4646-b] 2006 / 08 - 16 - 8. [filter dialog] a calculation of a coefficient of digital programmable filter su ch as hpf,eq filter ,a write to a register and check frequency response such as hpf,eq filter. window to show to figure 13 opens when push a [filter] button . figure13. main window
asahi kasei [akd4646-b] 2006 / 08 - 17 - 8-1. setting of a parameter (1) please set a parameter of each filter. item contents setting range sampling rate sampling frequency (fs) 7350hz ? fs ? 48000hz fil3 cut off frequency stereo separation emphasis filter cut cff frequency fs/10000 ? cut off frequency ? (0.497 * fs) filter type type of stereo separation emphasis filter lpf or hpf gain gain of stereo separation emphasis filter C10db ? gain ? 0db hpf cut off frequency high pass filter cut off frequency fs/10000 ? cut off frequency ? (0.497 * fs) lpf cut off frequency low pass filter cut off frequency fs/20 ? cut off frequency ? (0.497 * fs) eq for gain compensation (eq0) pole frequency pole frequency fs/10000 ? pole frequency ? (0.497 * fs) zero-point frequency zero-poi nt frequency fs/10000 ? zero-point frequency ? (0.497 * fs) gain gain 0db ? gain ? +12db 5 band equalizer eq1-5 center frequency eq1-5 center frequency 0hz ? center frequency < (0.497 * fs) eq1-5 band width eq1-5 band width (note 1) 1hz ? band width < (0.497 * fs) eq1-5 gain eq1-5 gain (note 2) -1 ? gain < 3 note 1. a gain difference is a bandwi dth of 3db from center frequency. note 2. when a gain is smaller than 0 , eq becomes a notch filter. (2) fil3, eq0, lpf, hpf, hpfad, eq1, eq2 , eq3, eq4, eq5 please set on/off of filter with a check button. when checked it, filter becomes on. when checked notch filter auto correction, perform automatic revision of center frequency of a notch filter. ( cf. 8-4. automatic revision of center frequency of a notch filter) figure14. filter on/off setting button
asahi kasei [akd4646-b] 2006 / 08 - 18 - 8-2. a calculation of a register a register set value is displ ayed when push a [register setting] button. wh en a value out of a setting range is set, error message is displayed, and, a calculation of register se tting is not carried out. figure15. a register setti ng calculation result when it is as follows that a register set value is updated. (1) when [register se tting] button was pushed. (2) when [frequency response] button was pushed. (3) when [update] button was pushed on a frequency characteristic indication window. (4) when set on/off of a check button notch filter auto correction
asahi kasei [akd4646-b] 2006 / 08 - 19 - 8-3.indication of a frequency characteristic a frequency characteristic is displayed when push a [frequency response] button. in addition, a register set point is updated then, too. change "frequency range", and indication of a frequency characteristic is updat ed when push a [update] button. figure16. a frequency characteristic indication result when it is as follows that a register set point is updated. (1) when [register se tting] button was pushed. (2) when [frequency response] button was pushed. (3) when [update] button was pushed on a frequency characteristic indication window. (4) when set on/off of a check button notch filter auto correction 8-4. automatic revision of center frequency of a notch filter when set a gain of 5 band equalizer to -1, equalizer beco mes a notch filter. when center frequency of plural notch filters is adjacent, produce a gap to central frequency (figure 17). when check "a notch filter auto correction" button, perform automatic revision of central frequency of a notch filter, di splay register setting after automatic revision and a frequency characteristic (figure 18). this automatic rev ision is availability for equalizer band which set a gain to "-1". (note) when distance among center frequency is smaller than band width, there is a possibility that automatic revision is not performed definitely. please confirm a revision result by indica tion of a frequency characteristic.
asahi kasei [akd4646-b] 2006 / 08 - 20 - setting of center frequency: 4400hz, 5000hz, 5400hz / band width : 200hz(3 band common) figure17. when there is no revision of center frequency setting of center frequency: 4400hz, 5000hz, 5400hz / band width : 200hz(3 band common) figure18. when there is revision of center frequency
asahi kasei [akd4646-b] 2006 / 08 - 21 - revision history date (yy/mm/dd) manual revision board revision reason contents 06/06/20 km084100 0 first edition 06/08/25 km084101 1 parts change ? AK4646 rev.a : AK4646 rev.b ? c10 4.7nf : 10nf important notice x these products and their specifications are subject to change without notice. before considering any use or application, consult the asahi kasei microsystems co., ltd. (akm) sales office or authorized distributor concerning their current status. x akm assumes no liability for infringement of any patent, intellectual property, or other right in the application or use of any information contained herein. x any export of these products, or devices or systems containing them, may require an export license or other official approval under the law and regulations of the country of export pertaining to customs and tariffs, currency exchange, or strategic materials. x akm products are neither intended nor authorized for use as critical components in any safety, life support, or other hazard related device or system, and akm assumes no responsibility relating to any such use, except with the express written consent of the representative director of akm. as used here: (a) a hazard related device or system is one designed or intended for life support or maintenance of safety or for applications in medicine, aerospace, nuclear energy, or other fields, in which its failure to function or perform may reasonably be expected to result in loss of life or in significant injury or damage to person or property. (b) a critical component is one whose failure to function or perform may reasonably be expected to result, whether directly or indirectly, in the loss of the safety or effectiveness of the device or system containing it, and which must therefore meet very high standards of performance and reliability. x it is the responsibility of the buyer or distributor of an akm product who distributes, disposes of, or otherwise places the product with a third party to notify that party in advance of the above content and conditions, and the buyer or distributor agrees to assume any and all responsibility and liability for and hold akm harmless from any and all claims arising from the use of said product in the absence of such notification.
a a b b c c d d e e e e d d c c b b a a vcc bick lrck sdti cclk csn pdn cdti mcki sdto reg beep lout rout spn spp lin2 rin2 rin1 lin1 reg mpwr title size document number rev date: sheet of AK4646 1 akd4646-b a3 15 monday, august 28, 2006 title size document number rev date: sheet of AK4646 1 akd4646-b a3 15 monday, august 28, 2006 title size document number rev date: sheet of AK4646 1 akd4646-b a3 15 monday, august 28, 2006 dgnd agnd r7 51 r7 51 c10 10n c10 10n 1 agnd t45_b agnd t45_b + c4 2.2u + c4 2.2u r6 51 r6 51 test2 test2 + c12 10u + c12 10u + c9 10u + c9 10u 1 vcc t45_r vcc t45_r jp1 gnd jp1 gnd r13 51 r13 51 + c6 10u + c6 10u r5 10 r5 10 r9 51 r9 51 r11 51 r11 51 r3 10k r3 10k r8 51 r8 51 c7 0.1u c7 0.1u c11 0.1u c11 0.1u 1 dgnd t45_b dgnd t45_b c5 0.1u c5 0.1u r10 51 r10 51 mpwr 1 vcom 2 avss 3 avdd 4 vcoc 5 nc 6 pdn 7 csn 8 cclk 9 cdti 10 sdti 11 lrck 13 bick 14 dvdd 15 dvss 16 mcki 17 mcko 18 spn 19 spp 20 svdd 21 svss 22 nc 23 rout 26 lout 27 min 28 rin2/in2- 29 lin2/in2+ 30 lin1/in1- 31 rin1/lin1+ 32 sdto 12 nc 24 nc 25 u5 AK4646 u5 AK4646 r12 51 r12 51 c8 0.1u c8 0.1u
a a b b c c d d e e e e d d c c b b a a lin1 lin2 rin2 rin1 lout rout beep spp spn mpwr title size document number rev date: sheet of input/output 1 akd4646-b a3 25 monday, august 28, 2006 title size document number rev date: sheet of input/output 1 akd4646-b a3 25 monday, august 28, 2006 title size document number rev date: sheet of input/output 1 akd4646-b a3 25 monday, august 28, 2006 020s16 p n spk1 piezo(ext) dynamic dynamic piezo(ext) a k d2 diode zener d2 diode zener r24 20k r24 20k + c18 1u + c18 1u + c14 1u + c14 1u r19 10 r19 10 r21 220 r21 220 r2 2.2k r2 2.2k + c21 1u + c21 1u 6 4 3 j2 beep j2 beep jp2 lin1 jp2 lin1 + c2 1u + c2 1u 6 4 3 j3 lin2/rin2 j3 lin2/rin2 + c20 1u + c20 1u a k d1 diode zener d1 diode zener r20 10 r20 10 6 4 3 j5 lin1/rin1 j5 lin1/rin1 jp5 spkp jp5 spkp 1 2 cn1 cn1 jp4 spkn jp4 spkn r15 20k r15 20k r1 2.2k r1 2.2k r22 20k r22 20k 6 4 3 j4 spk-jack j4 spk-jack jp3 rin1 jp3 rin1 + c3 1u + c3 1u + c19 1u + c19 1u 6 4 3 j6 lout/rout j6 lout/rout r23 220 r23 220
a a b b c c d d e e e e d d c c b b a a vcc reg reg reg 4114_pdn d3v sdto dir_sdto dir_bick dir_lrck dir_mclk reg d3v d3v d3v d3v vcc title size document number rev date: sheet of dir/dit 1 akd4646-b a3 35 monday, august 28, 2006 title size document number rev date: sheet of dir/dit 1 akd4646-b a3 35 monday, august 28, 2006 title size document number rev date: sheet of dir/dit 1 akd4646-b a3 35 monday, august 28, 2006 for 74hc14 1 2 14 7 u3a 74hc14 u3a 74hc14 + c36 10u + c36 10u c34 0.1u c34 0.1u 1 2 x1 11.2896mhz x1 11.2896mhz r26 18k r26 18k + c22 47u + c22 47u r27 1k r27 1k in out gnd t1 ta48033f t1 ta48033f c35 0.1u c35 0.1u c28 0.1u c28 0.1u c33 5p c33 5p out 1 vcc 3 gnd 2 port1 torx141 port1 torx141 c31 0.47u c31 0.47u 1 2 l1 47u l1 47u c24 0.1u c24 0.1u + c29 10u + c29 10u k a led1 erf led1 erf test1 test1 r25 470 r25 470 + c37 10u + c37 10u r38 47k r38 47k c30 0.1u c30 0.1u + c27 10u + c27 10u c23 0.1u c23 0.1u r29 5.1 r29 5.1 c25 0.1u c25 0.1u gnd 1 vcc 2 in 3 port2 totx141 port2 totx141 r28 47k r28 47k c38 0.1u c38 0.1u ips0 1 nc 2 dif0 3 test2 4 dif1 5 nc 6 dif2 7 ips1 8 p/sn 9 xtl0 10 xtl1 11 tvdd 13 dvss 14 tx0 15 tx1 16 bout 17 cout 18 uout 19 vout 20 dvdd 21 dvss 22 mcko1 23 bick 26 mcko2 27 daux 28 xto 29 xti 30 pdn 31 cm0 32 cm1 33 ocks1 34 ocks0 35 int0 36 avdd 38 r 39 vcom 40 avss 41 rx0 42 nc 43 rx1 44 test1 45 rx2 46 nc 47 rx3 48 vin 12 lrck 24 sdto 25 int1 37 u2 ak4114 u2 ak4114 1 2 l2 10u l2 10u c32 5p c32 5p
a a b b c c d d e e e e d d c c b b a a pdn lrck cdti csn dir_lrck dir_sdto mcki dir_mclk dir_bick cclk sdto bick sdti d3v 4114_pdn reg d3v d3v d3v title size document number rev date: sheet of logic 1 akd4646-b a3 45 monday, august 28, 2006 title size document number rev date: sheet of logic 1 akd4646-b a3 45 monday, august 28, 2006 title size document number rev date: sheet of logic 1 akd4646-b a3 45 monday, august 28, 2006 vcc dir scl/cclk sda/cdti csn h l bick adc sdti mclk lrck jp11 sdti jp11 sdti r30 10k r30 10k r35 10k r35 10k r32 470 r32 470 jp7 lrck2 jp7 lrck2 jp9 mclk jp9 mclk 3 4 14 7 u3b 74hc14 u3b 74hc14 2 1 3 sw1 pdn sw1 pdn c39 0.1u c39 0.1u r34 470 r34 470 r33 10k r33 10k jp8 lrck jp8 lrck jp10 bick jp10 bick r31 470 r31 470 r37 10k r37 10k 5 6 14 7 u3c 74hc14 u3c 74hc14 1 2 3 4 5 6 7 8 9 10 port3 dsp port3 dsp r36 10k r36 10k a1 2 a2 3 a3 4 a4 5 a5 6 a6 7 a7 8 a8 9 g1 1 g2 19 y1 18 y2 17 y3 16 y4 15 y5 14 y6 13 y7 12 y8 11 vcc 20 gnd 10 u4 74lvc541 u4 74lvc541 c40 0.1u c40 0.1u jp6 bick2 jp6 bick2 k a d3 hsu119 d3 hsu119 1 2 3 4 5 6 7 8 9 10 port4 ctrl port4 ctrl
a a b b c c d d e e e e d d c c b b a a d3v title size document number rev date: sheet of pin 1 akd4646-b a3 55 monday, august 28, 2006 title size document number rev date: sheet of pin 1 akd4646-b a3 55 monday, august 28, 2006 title size document number rev date: sheet of pin 1 akd4646-b a3 55 monday, august 28, 2006 11 10 14 7 u3e 74hc14 u3e 74hc14 9 8 14 7 u3d 74hc14 u3d 74hc14 13 12 14 7 u3f 74hc14 u3f 74hc14
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