ASAHI KASEI

[AKD4642-B]

2005/02

- 1 -

GENERAL DESCRIPTION

AKD4642-B is an evaluation board for the AK4642, 16bit CODEC with built-in MIC/HP/SPK amplifier. The
AKD4642 can evaluate A/D converter and D/A converter separately in addition to loop-back mode (A/D

D/A). The AKD4642 also has the digital audio interface and can achieve the interface with digital audio
systems via opt-connector.

Ordering guide

AKD4642-B

---

Evaluation

board

for

AK4642

(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

DIT/DIR with optical input/output

10pin Header for serial control mode

10pin Header

Control Data

10pin Header

3.3V

GND

BEEP

AK4114

Opt In
Opt Out

AK4642

LOUT/

ROUT

Regulator

LIN1/

RIN1

LIN2/

RIN2

DSP

Figure 1. AKD4642 Block Diagram

* Circuit diagram and PCB layout are attached at the end of this manual

Evaluation board Rev.0 for AK4642

AKD4642-B

ASAHI KASEI

[AKD4642-B]

2005/02

- 2 -

1. Evaluation Board Manual

Operation sequence

1) Set up the power supply lines.

[VCC] (red)

5.0V :

for

logic

[AGND] (black) = 0V : for analog ground
[DGND] (black) = 0V : for logic ground

Each supply line should be distributed from the power supply unit.
3.3V is supplied to AK4642 and AK4114 via the regulator.

2) Set up the evaluation mode, jumper pins.

(See the followings.)

3) Power on.

The AK4642 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 block (HP, 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 I

S compatible.

(1-1) Evaluation of Loop-back using DIT of AK4114

PORT2 (DIT) and X1 (X'tal) 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

ADC

DIR

JP8

LRCK

JP9

MCLK

JP10

BICK

The AK4642's audio interface format is left instified at default .
There fore, DIF1-0 bits should be chenged to "11"(I

(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

ADC

DIR

JP8

LRCK

JP9

MCLK

JP10
BICK

The AK4642's audio interface format is left instified at default .
There fore, DIF1-0 bits should be chenged to "11"(I

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

[AKD4642-B]

2005/02

- 3 -

(1-3) Evaluation of Loop-back using AK4114

X'tal oscillator (X1) is used. Nothing should be connected to PORT1 (DIR) and PORT3 (DSP).

JP6

BICK2

JP7

LRCK2

JP11
SDTI

ADC

DIR

JP8

LRCK

JP9

MCLK

JP10

BICK

The AK4642's audio interface format is left instified at default .
There fore, DIF1-0 bits should be chenged to "11"(I

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 should be connected to PORT1 (DIR).

JP6

BICK2

JP7

LRCK2

JP11

SDTI

ADC

DIR

JP8

LRCK

JP9

MCLK

JP10
BICK

(2) Master mode

(2-1) Evaluation of Recording block using MCLK of AK4114
(2-2) Master clock is fed externally

(2-1) Evaluation of Loop-back using MCLK of AK4114

X'tal 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 AK4642's PLL.

JP6

BICK2

JP7

LRCK2

JP11

SDTI

ADC

DIR

JP8

LRCK

JP9

MCLK

JP10
BICK

(2-2) Master clock is fed externally

PORT3 (DSP) is used and MCLK is fed from PORT3. Nothing 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 AK4642's PLL.

JP6

BICK2

JP7

LRCK2

JP11

SDTI

ADC

DIR

JP8

LRCK

JP9

MCLK

JP10
BICK

ASAHI KASEI

[AKD4642-B]

2005/02

- 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

not

connected.

SHORT

Mic

power

connected.

3. JP4,JP5 : Select speaker type.
OPEN

Piezo

speaker

SHORT

Dynamic

speaker

4. JP12 : Select speaker type.
Dynamic:

Dynamic

speaker

Piezo:

Piezo

speaker

The function of the toggle SW

Upper-side is "H" and lower side is "L".

[SW1] (PDN): Power down of AK4642 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.

Serial Control

The AK4642 can be controlled via the printer port (parallel port) of IBM-AT compatible PC. Connect PORT4

(CTRL) with PC by 10 wire flat cable packed with the AKD4642.

Connect

CSN
CCLK
CDTI

10pin Header

10pin
Connector

10 wire
flat cable

AKD4642

Figure 2. Connect of 10 wire flat cable

ASAHI KASEI

[AKD4642-B]

2005/02

- 5 -

Analog Input/Output Circuits

(1) Input Circuits

1. BEEP Input Circuit

C14

BEEP

R15

20k

BEEP

Figure 3. BEEP Input Circuit

2. LINE1 Input Circuit

LIN1

RIN1

2.2k

JP2

LIN1

JP3

RIN1

MPWR

LIN1/RIN1

Figure 4. LINE1 Input Circuit

3. LINE2 Input Circuit

C18

LIN2

RIN2

LIN2/RIN2

C19

Figure 5. LINE2 Input Circuit

ASAHI KASEI

[AKD4642-B]

2005/02

- 6 -

(2) Output Circuits

1. Headphone-amp Output Circuit

C16

0.22u

C17

0.22u

R17

R18

C15

47u

R14

6.8

C13

47u

R16

6.8

HPR

HPL

Figure 6. Headphone-amp Output Circuit

3. STEREO LINE Output Circuit

C21

R23

220

R22

20k

ROUT

LOUT

LOUT/ROUT

R24

20k

C20

R21

220

Figure 8. STEREO LINE Output Circuit

ASAHI KASEI

[AKD4642-B]

2005/02

- 8 -

2. Control Software Manual

Set-up of evaluation board and control software

1. Set up the AKD4642-B according to previous term.

2. Connect IBM-AT compatible PC with AKD4642-B by 10-line type flat cable (packed with AKD4642-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 Driver by AKM device control software".
In case of Windows95/98/ME, this installation is not needed. This control software does not operate on Windows
NT.)

3. Insert the CD-ROM labeled "AK4642-B Evaluation Kit" into the CD-ROM drive.

4. Access the CD-ROM drive and double-click the icon of "akd4642.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.

Explanation of each buttons

1. [Port Reset] : Set up the USB interface board (AKDUSBIF-A) .
2. [Write default] : Initialize the register of AK4642.
3. [All Write] : Write all registers that is currently displayed.
4. [Function1] : Dialog to write data by keyboard operation.
5. [Function2] : Dialog to write data by keyboard operation.
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. [SAVE] : Save the current register setting.
10. [OPEN] : Write the saved values to all register.
11. [Write] : Dialog to write data by mouse operation.

Indication of data

Input data is indicated on the register map. Red letter indicates "H" or "1" and blue one indicates "L" or "0". Blank is the
part that is not defined in the datasheet.

ASAHI KASEI

[AKD4642-B]

2005/02

- 9 -

Explanation of each dialog

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 AK4642, 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 registers data in 2 figures of hexadecimal.

If you want to write the input data to AK4642, click [OK] button. If not, click [Cancel] button.

3. [Function2 Dialog]

Dialog to evaluate IVOL and DVOL

Address Box: Input registers address in 2 figures of hexadecimal.
Start Data Box: Input starts data in 2 figures of hexadecimal.
End Data Box: Input end data in 2 figures of hexadecimal.
Interval Box: Data is written to AK4642 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 AK4642, click [OK] button. If not, click [Cancel] button.

ASAHI KASEI

[AKD4642-B]

2005/02

- 10 -

4. [Save] and [Open]

4-1. [Save]

Save the current register setting data. The extension of file name is "akr".

(Operation flow)

(1) Click [Save] Button.
(2) Set the file name and push [Save] Button. The extension of file name is "akr".

4-2. [Open]

The register setting

data saved by

[Save] is written

to AK4642.

The file type is the same as [Save].

(Operation flow)

(1) Click [Open] Button.
(2) Select the file (*.akr) and Click [Open] Button.

ASAHI KASEI

[AKD4642-B]

2005/02

- 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] button on the Function3 window. The extension of file
name is "aks".

Figure 1. Window of [F3]

ASAHI KASEI

[AKD4642-B]

2005/02

- 13 -

6-1. [OPEN] buttons on left side and [START] buttons

(1) Click [OPEN] button and select the sequence file (*.aks).

The sequence file name is displayed as shown in Figure 3.

Figure 3. [F4] window(2)

(2) Click [START] button, then the sequence is executed.

3-2. [SAVE] and [OPEN] buttons on right side

[SAVE] : The sequence file names can assign be saved. The file name is *.ak4.

[OPEN] : The sequence file names assign that are saved in *.ak4 are loaded.

3-3. Note

(1) This function doesn't support the pause function of sequence function.

(2) All files need to be in same folder used by [SAVE] and [OPEN] function on right side.

(3) When the sequence is changed in [Function3], the file should be loaded again in order to reflect the change.

ASAHI KASEI

[AKD4642-B]

2005/02

- 14 -

7. [Function5 Dialog]

The register setting that is created by [SAVE] function on main window can be assigned to buttons and executed.

When

[F5] button is clicked, the following window as shown in Figure 4 opens.

Figure 4. [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 5.

(2) Click [WRITE] button, then the register setting is executed.

ASAHI KASEI

[AKD4642-B]

2005/02

- 15 -

Figure 5. [F5] windows(2)

7-2. [SAVE] and [OPEN] buttons on right side

[SAVE] : The register setting file names assign can be saved. The file name is *.ak5

[OPEN] : The register setting file names assign that are saved in *.ak5 are loaded.

7-3. Note

(1) All files need to be in same folder used by [SAVE] and [OPEN] function on right side.

(2) When the register setting is changed by [Save] Button in main window, the file should be loaded again in order to

reflect the change.

ASAHI KASEI

[AKD4642-B]

2005/02

- 16 -

MEASUREMENT RESULTS

1. EXT mode (slave mode)

[Measurement condition]

· Measurement unit: Audio Precision, System two
· BICK: 64fs
· Bit: 16bit
· Measurement Frequency: 20 20kHz
· Power Supply: AVDD=DVDD=HVDD=3.3V
· Temperature: Room
· Input Frequency: 1kHz
· Sampling Frequency: 44.1kHz

[Measurement Results]

2. ADC (LIN2/RIN2) characteristics (IVOL=0dB, ALC1 = OFF, LIN2/RIN2 ADC IVOL)

L[dB]

R[dB]

MGAIN Bit

THD+N 20kHzLPF

(-1dB)

87.3 82.9 87.1 82.7

20kHzLPF + A-weighted

94.9

86.3

94.9

86.1

S/N

20kHzLPF + A-weighted 95.0 86.2 95.1 86.0

3.DAC (LOUT/ROUT) characteristics (RL=10k

DAC LOUT/ROUT)

L[dB]

R[dB]

THD+N 20kHzLPF

(-3dB)

87.5

87.6

S/N

20kHzLPF + A-weighted

92.0

93.4

ASAHI KASEI

[AKD4642-B]

2005/02

- 17 -

. PLOT DATA

2-1.ADC (

LIN2/RIN2 ADC

) PLOT DATA

AKM

09/17/04 10:16:26

AK4642 THD+N vs. Input Level LIN2/RIN2

-130

-10

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

dBr

-130

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

Figure 10. THD+N vs. Input Level

AKM

09/15/04 18:17:10

AK4642 THD+N vs. fin LIN2/RIN2

20k

100

200

500

10k

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

Figure 11. THD+N vs. Input Frequency

ASAHI KASEI

[AKD4642-B]

2005/02

- 18 -

AKM

04 18:06:29

4642

Linearity LIN 2/RIN2

120

110

100

-70

-60

-50

-40

-10

dBr

120

110

100

Figure 12. Linearity

AKM

09/15/04 18:11:16

AK4642 Frequency Responce LIN2/RIN2

20k

100

200

500

10k

-5

-4

-3

-2

-1

Figure 13 Frequency Response

ASAHI KASEI

[AKD4642-B]

2005/02

- 19 -

AKM

09/17/04 11:32:36

AK4642 FFT THD+N LIN2/RIN2

20k

100

200

500

10k

-180

-170

-160

-150

-140

-130

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

Figure 14. FFT Plot ( Input level=-1.0dBFS)

AKM

09/17/04 11:35:18

AK4642 FFT DR LIN2/RIN2

20k

100

200

500

10k

-180

-170

-160

-150

-140

-130

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

Figure 15. FFT Plot ( Input level=-60.0dBFS )

ASAHI KASEI

[AKD4642-B]

2005/02

- 20 -

AKM

09/17/04 11:36:17

AK4642 FFT DR LIN2/RIN2

20k

100

200

500

10k

-180

-170

-160

-150

-140

-130

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

Figure 16. FFT Plot ( No signal )

AKM

04 17:58:45

4642 Crosstalk LIN 2/RIN2

20k

100

200

500

10k

140

130

120

110

100

Figure 17. Crosstalk Plot

ASAHI KASEI

[AKD4642-B]

2005/02

- 21 -

2-2. DAC(

DAC LOUT/ROUT

) PLOT DATA

AKM

09/21/04 11:04:02

AK4642 THD vs. Input Level LOUT/ROUT

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

dBFS

Figure 18. THD+N vs. Input Level

AKM

09/17/04 10:33:02

AK4642 THD+N vs. fin LOUT/ROUT

20k

100

200

500

10k

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

Figure 19. THD+N vs. Input Frequency

ASAHI KASEI

[AKD4642-B]

2005/02

- 22 -

AKM

09/21/04 11:19:21

AK4642 Linearity LOUT/ROUT

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

dBFS

Figure 20 Linearity

AKM

09/21/04 13:09:12

AK4642 Frequency Responce LOUT/ROUT

-3

-2.5

-2

-1.5

-1

-0.5

+0.5

+1.5

+2.5

20k

10k

12k

14k

16k

18k

Figure 21. Frequency Response

ASAHI KASEI

[AKD4642-B]

2005/02

- 23 -

AKM

09/21/04 10:51:51

AK4642 FFT THD+N LOUT/ROUT

-170

-160

-150

-140

-130

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

20k

100

200

500

10k

Figure 22. FFT Plot ( Input level=-3dBFS )

AKM

09/21/04 10:53:54

AK4642 FFT DR LOUT/ROUT

-170

-160

-150

-140

-130

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

20k

100

200

500

10k

Figure 23. FFT Plot ( Input level=-60.0dBFS )

ASAHI KASEI

[AKD4642-B]

2005/02

- 24 -

AKM

09/21/04 10:55:10

AK4642 FFT S/N LOUT/ROUT

-170

-160

-150

-140

-130

-120

-110

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

20k

100

200

500

10k

Figure 24. FFT Plot ( No signal )

AKM

04 19:30:36

4642

Crosstalk LOUT /ROUT

20k

100

200

500

10k

120

110

100

Figure 25. Crosstolk Plot

ASAHI KASEI

[AKD4642-B]

2005/02

- 25 -

IMPORTANT NOTICE

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.

AKM assumes no liability for infringement of any patent, intellectual property, or other right in the

application or use of any information contained herein.

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.

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.

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.

BICK

LRCK

SDTI

CCLK

CSN

PDN

T
I

MCKI

T
O

REG

E
P

HPL

HPR

SPN

SPP

LIN2

RIN2

RIN1

VCC

REG

MPWR

Title

Size

Document Number

R e v

Date:

Sheet

o f

AK4642

AKD4642-B

Monday, September 13, 2004

DGND

AGND

PIEZO

Dynamic

JP12

HVDD

R10

C12

10u

0.1u

R11

10k

10u

R12

JP1

GND

10u

TEST2

47k

R13

0.1u

AK4642

MPWR

VCOM

AVSS

AVDD

VCOC

I2C

PDN

CSN

CCLK

CDT

LRCK

BIC

VSS

MCKI

MCKO

SPN

SPP

HVDD

HVSS

HPR

ROUT

LOUT

BEEP

HPL

TET

C11

0.1u

2.2u

0.1u

C10 4.7n

LIN1

LIN2

RIN2

RIN1

LOUT

ROUT

BEEP

HPL

HPR

SPP

SPN

MPWR

Title

Size

Document Number

R e v

Date:

Sheet

o f

Input/Output

AKD4642-B

Thursday, September 16, 2004

020S16

SPK1

Piezo(EXT)
Dynamic

Dynamic
Piezo(EXT)

SPKP

SPKN

R22

20k

R20

R23

220

C14

BEEP

C16

0.22u

C15

47u

2.2k

JP4

LOUT/ROUT

C20

R15

20k

C13

47u

C17

0.22u

2.2k

R14

6.8

R17

CN1

JP3

C21

LIN1/RIN1

R16

6.8

JP2

LIN1

C19

C18

R24

20k

LIN2/RIN2

R19

R21

220

JP3

RIN1

R18

SPK-JACK

D3V

VCC

REG

D3V

VCC

D3V

REG

4114_PDN

D3V

SDTO

DIR_SDTO

DIR_BICK

DIR_LRCK

DIR_MCLK

Title

Size

Document Number

R e v

Date:

Sheet

o f

DIR/DIT

AKD4642-B

Monday, September 13, 2004

for 74HC14,74HC04

C29

10u

U3A

74HC14

C31

0.47u

C22

47u

R27

R29

5.1

TEST 1

47u

C36

10u

C33

C30

0.1u

TA48M33F

OUT

GND

LED1

ERF

L2
10u

C34

0.1u

C35

0.1u

C24

0.1u

PORT1

TORX141

OUT

VCC

GND

C27

10u

R28

47k

C28

0.1u

11.2896MHz

C25

0.1u

C32

R25

470

C38

0.1u

PORT2

TOTX141

GND

VCC

AK4114

IPS0

DIF0

TEST2

DIF1

DIF2

IPS1

P/SN

XTL0

XTL1

TVD

VSS

TX0

TX1

COUT

UOUT

VSS

KO1

BICK

MCKO2

DAUX

XTO

XTI

PDN

CM0

CM1

OCKS1

OCKS0

INT0

AVD

AVSS

TEST1

VIN

LRCK

SDTO

C37

10u

C23

0.1u

R26

18k

D3V

VCC

D3V

PDN

LRCK

CDTI

CSN

DIR_LRCK

DIR_SDTO

MCKI

DIR_MCLK

DIR_BICK

CCLK

SDTO

BICK

SDTI

D3V

4114_PDN

Title

Size

Document Number

R e v

Date:

Sheet

o f

LOGIC

AKD4642-B

Monday, September 13, 2004

VCC

DIR

CCLK

CDTI

CSN

BICK

ADC

SDTI

MCLK

LRCK

JP9

MCLK

U3B

74HC14

PORT3

DSP

R32

470

JP10

BICK

74LVC541

VCC

GND

R31

470

R37

10k

C40

0.1u

JP6

BICK2

R33

10k

SW1

PDN

R35

10k

JP8

LRCK

R36

10k

C39

0.1u

JP7

LRCK2

JP11

SDTI

U3C

74HC14

PORT4

CTRL

R34

470

R30

10k

HSU119

Ð­Ð»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: AKD4642-B

ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: AKD4642-B