AKM AK4940VN Evaluation Board Manual

ASAHI KASEI [AKD4940-A]

<KM126402> 2018/07

- 1 -

GENERAL DESCRIPTION

The AKD4940-A is an evaluation board for the AK4940, monaural audio CODEC with a microphone

pre-amplifier and an analog direct path. The AKD4940-A also has the digital audio interface and can

achieve the interface with digital audio systems via opt-connector.

 Ordering guide

AKD4940-A --- Evaluation board for AK4940VN.

(Control software is included in this package)

FUNCTION

 Analog audio input : Stereo-mini jack (x2)

 Analog audio output : Stereo-mini jack (x2),RCA connector (x1)

 Digital interface

- DIT&DIR (AK4118A) : Optical connector

- 8pin header for external signal interface

 USB port for the board control

AK4118A

(DIR&DIT)

Opt In

Opt Out

AK4940

+6～+12V

IN1N

OUT2N

OUT2P

Pin Header

GND

Regulators

IN1P

IN2P

IN2N

OUT1N

OUT1P

OUT3

USB IF

AVDD

TVDD

Figure 1. AKD4940-A Block Diagram

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

AK4940 Evaluation board Rev.1

AKD4940-A

ASAHI KASEI [AKD4940-A]

<KM126402> 2018/07

- 2 -

Board Outline Chart

 Board Diagram

figure 2.AKD4940-A Outline Chart

 Description

(1) U101 ( AK4940 )

Audio CODEC.

(2) J201, J202, J203, J204, J205 ( Analog data )

J201, J202 Stereo mini jack : Analog Input for IN1N/P, IN2N/P.

J203, J204 Stereo mini jack : Analog Output for OUT1N/P, OUT2N/P.

J205 RCA Connector : Analog Output for OUT3.

(3) PORT301, PORT302 ( Optical Connector )

PORT301 : Input optical signal to AK4118A.

PORT302 : Output optical signal from AK4118A.

(4) PORT303( External signal port )

PORT303 : External digital signal.

(5) J501, J502, J503, J504 ( Power supply )

J501 (VIN) : +6V～+12V Power Supply

J502 (AVDD) : +3.3V Power Supply

J503 (TVDD) : +1.8V/+3.3V Power Supply

J504 (GND) : GND

(6) U301 ( AK4118A )

AK4118A has DIR, DIT and X’tal oscillator.

(7) U402 ( PIC )

USB control chip. Sets up AK4940 registers from PC via USB port (PORT401).

Analog Input

Power Supply Jack

Optical Output

USB Port

External Port

U101

U301

T503

T504

T401

Analog Output

Optical Input

T502

T501

ASAHI KASEI [AKD4940-A]

<KM126402> 2018/07

- 3 -

Evaluation Board Manual

■ Operation Sequence

1) Set up Power Supplies by jacks

1.1 When AVDD, TVDD are supplied from regulator. (Default)

JP501, JP502, JP503 select the path from regulator.

JP501

AVDD_SEL

JP503

TVDD_SEL2

J501

VIN

J503

AVDD / OPEN

J504

TVDD / OPEN

REG CON

figure 3. Setting of using the regulator

1.2 In default setting, the voltage of TVDD is 3.3V (JP502).

JP502

TVDD-SEL1

+3.3V +1.8V

figure 4. Setting of TVDD selector

1.3 When AVDD, TVDD are supplied from the power supply connectors.

JP501, JP503 select the path from the power supply connectors.

JP501

AVDD_SEL

JP503

TVDD_SEL2

J501

VIN

J503

AVDD / OPEN

J504

TVDD / OPEN

REG CON

figure 5. Setting of using the power supply connector

ASAHI KASEI [AKD4940-A]

<KM126402> 2018/07

- 4 -

2) Analog Input Setting

2.1 Differential mode.

JP201

Diff Sel

JP202

Diff Sel

1 2 3

figure 6. Setting of using the analog input selector

2.2 Pseudo- Differential mode or Singl Ended mode.

JP201

Diff Sel

JP202

Diff Sel

1 2 3

figure 7. Setting of using the analog input selector

3) Setup the Audio I/F Evaluation Mode.

3.1 Using AK4118A.

JP301

SDOUT_SEL

JP302

BICK_SEL

1 2 3

JP302

SDIN_SEL

LRCK_SEL

figure 8. Setting of using the AK4118A

3.2 Using External signal.

JP301

SDOUT_SEL

JP302

BICK_SEL

1 2 3

JP302

SDIN_SEL

LRCK_SEL

figure 9. Setting of using the PORT303

ASAHI KASEI [AKD4940-A]

<KM126402> 2018/07

- 5 -

CONTROL SOFT MANUAL

■ Evaluation Board and Control Soft Settings

1. Set an evaluation board properly.

2. Connect Evaluation board to PC with USB cable.

USB control is recognized as HID (Human Interface Device) on the PC.

When it can not be recognized correctly please reconnect Evaluation board to PC with USB cable.

3. Proceed evaluation by following the process below.

[Support OS]

Windows 7 / 10 (32 / 64 bit)

■ Operation Screen

1. Start up the control program following the process above.

2. After the evaluation board’s power is supplied, the AK4940 must be reset once.

(Pushing [Port Reset] button, and power up AK4940 by [PDN : H] button.)

3. The operation screen is shown below

figure 10. Control Soft display

ASAHI KASEI [AKD4940-A]

<KM126402> 2018/07

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■ Operation Overview

Function, register map and testing tool can be controlled by this control soft. These controls are selected by upper tabs.

Buttons which are frequently used such as register initializing button “Write Default”, are located outside of the switching tab window.

Refer to the “■ Dialog Boxes” for details of each dialog box setting.

figure 11. Operation Overview

1. [Port Reset] : For when connecting to PC with USB cable

Click this button after the control soft starts up when connecting to PC with USB cable.

This button can reset AK4118A and AK4940.

2. [Write Default] : Register Initializing

When the device is reset by a hardware reset, use this button to initialize the registers.

3. [All Write] : Executing write commands for all registers displayed.

4. [Save] : Saving current register settings to a file.

5. [Load] : Executing data write from a saved file.

6. [All Reg Write] : [All Reg Write] dialog box is popped up.

7. [Sequence] : [Sequence] dialog box is popped up.

8. [Sequence (File)] : [Sequence (File)] dialog box is popped up.

9. [PDN : H] : Selection PDN H/L of AK4940.

(5)

(4)

(3)

(2)

(1)

(6)

(7)

(8)

(9)

ASAHI KASEI [AKD4940-A]

<KM126402> 2018/07

- 7 -

■ Tab Functions

1. [Function]: Esay function control tab

This tab is for the control of this evaluation board easily.

Each button link to the register of AK4940 and AK4118A, the register is written by push these buttons.

figure 12. Window of [Function]

(1-1) [A/D , D/A On]

Setting:AK4940 and AK4118A Power On.

Mode:Lineout +0dB/ExtSlave/I2S/48kHz.

figure 13. Button of [A/D , D/A On]

(1-2)

(1-3)

(1-4)

(1-5)

(1-6)

(1-7)

(1-8)

(1-9)

(1-1)

ASAHI KASEI [AKD4940-A]

<KM126402> 2018/07

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(1-2) [ADC Setting]

Setting “MIC Gain Amp” and “ADC Digital Volume” and “Digital Filter” and “Attenuation Speed”.

figure 14. ADC Setting

(1-3) [Analog input select]

Selecting analog input interface “differntial” or “single-end” and “IN1P/IN1N” or “IN2P/IN2N”.

figure 15. Analog input select

(1-4) [DAC Setting]

Setting “DAC Digital Volume” and “Attenuation Speed” and “Soft Mute”.

figure 16. DAC Setting

(1-5) [Analog output select]

Selecting analog output interface OUT1P/N and OUT2P/N “Mute” or “Analog Direct” or “DAC Lineout”.

Selecting analog output interface OUT3 “Mute” or “DAC Lineout(+)” or “DAC Lineout(-)” and “Inv. DAC Lineout(+)” or AVDD/2.

figure 17. Analog output select

Slider bar is

moved to the

selected value.

ASAHI KASEI [AKD4940-A]

<KM126402> 2018/07

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(1-6) [SDIN select]

Selecting SDIN INV bit “Normal” or “Inverted”.

figure 18. SDIN select

(1-7) [Audio I/F setting]

Selecting the audio format of AK4940.

figure 19. Audio I/F setting

(1-8) [~Power bit Setting~]

ADC or DAC : Button on :ADC or DAC Power Up.

ADC or DAC : Button off :ADC or DAC Power Down.

figure 20. Button of [Power Down/UP]

(1-9) [AK4118A Setting]

Selecting power up and the audio format of AK4118A.

figure 21. Window of [AK4118A Setting]

ASAHI KASEI [AKD4940-A]

<KM126402> 2018/07

- 10 -

2. [REG]: Register Map

This tab is for a register writing and reading.

Each bit on the register map is a push-button switch. Button Down indicates “H” or “1” and the bit name is in red (when read only it is

in deep red). Button Up indicates “L” or “0” and the bit name is in blue (when read only it is in gray)

Grayout registers are Read Only registers. They can not be controlled.

The registers which is not defined in the datasheet are indicated as “---”.

figure 22. Window of [REG]

(1-1) [Write]: Data Writing Dialog

It is for when changing two or more bits on the same address at the same time.

Click [Write] button located on the right of the each corresponded address for a pop-up dialog box.

When the checkbox is checked, the data will be “H” or “1”. When the checkbox is not checked, the data will be “L”

or “0”. Click [OK] to write setting values to the registers, or click [Cancel] to cancel this setting.

figure 23. Window of [Register Set]

(1-2) [Read]: Data Read

Click [Read] button located on the right of the each corresponded address to execute a register read.

After register reading, the display will be updated regarding to the register status.

Button Down indicates “H” or “1” and the bit name is in red (when read only it is in deep red).

Button Up indicates “L” or “0” and the bit name is in blue (when read only it is in gray)

Please be aware that button statuses will be changed by a Read command.

ASAHI KASEI [AKD4940-A]

<KM126402> 2018/07

- 11 -

■ Dialog Boxes

1. [All Reg Write]: All Reg Write dialog box

Click [All Reg Write] button in the main window to open register setting files.

Register setting files saved by [Save] button can be applied.

figure 24. Window of [All Register Write]

[Open (left)] : Selects a register setting file (*.akr).

[Write] : Executes register writing by the setting of selected file.

[Help] : Opens a help window.

[Save] : Saves a register setting file assignment. The file name is “*.mar”.

[Open (right)] : Opens a saved register setting file assignment “*. mar”.

[Close] : Closes the dialog box and finish the process.

[Interval time] : The frequency of the writing.

~ Operating Suggestions ~

1. Those files saved by [Save] button and opened by [Open] button on the right of the dialog “*.mar” should be stored in the same

folder.

2. When register settings are changed by [Save] button in the main window, re-read the file to reflect new register settings.

ASAHI KASEI [AKD4940-A]

<KM126402> 2018/07

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2. [Save]: [Save Address of Register] Dialog Box

Click the [Save] button in the main window for save address setting dialog box.

figure 25. Window of [SAVE]

[All Address] check box : When the [All Address] checkbox is checked, all register settings will be saved.

[Start Address] edit box : When the [All Address] check box is not checked, set starts register address to save.

[End Address] edit box : When the [All Address] check box is not checked, set end register address to save.

[OK] button : Selects a file to save and saves register settings.

[Cancel] button : Cancel and finish this process.

[AK4118A] check box : When the [AK4118A] checkbox is checked, AK4118A settings will be saved.

3. [Sequence]: [Sequence] Dialog Box

Click the [Sequence] button in the main window to open register sequence setting dialog box.

Register sequence can be set in this dialog box.

figure 26. Window of [Sequence]

ASAHI KASEI [AKD4940-A]

<KM126402> 2018/07

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~ Sequence Setting ~

Set register sequence according to the following process.

1. Select a command

Use [Select] pull-down box to choose commands. Corresponding boxes will be valid.

< Select items>

・No use : Not using this address

・Register : Register write

・Reg_Mask : Register write (Masked)

・Interval : Takes an interval

・Stop : Pauses the sequence

・End : Ends the sequence

2. Input sequence

[Address] : Data address

[Data] : Write data

[Mask] : Mask

This value “ANDed” with the write data becomes the input data.

The bits which corresponding Mask bit = “0” are not changed. At this time, data read is not executed, and the storage data of

this software is used.

“Write Default” must be executed after power up the AK4940 or when the AK4940 is reset by the PDN pin since the storage

data and register values are different. This is the actual write data.

When Mask = 0x00, current setting is hold.

When Mask = 0xFF, the 8bit data which is set in the [Data] box is written.

When Mask = 0x0F, lower 4bit data which is set in the [Data] box is written.

Upper 4bit is hold to current setting.

[Interval] : Interval time

Valid boxes for each process command are shown below.

・No use : None

・Register : [ Address ], [ Data ], [ Interval ]

・Reg_Mask : [ Address ], [ Data ], [ Mask ], [ Interval ]

・Interval : [ Interval ]

・Stop : None

・End : None

ASAHI KASEI [AKD4940-A]

<KM126402> 2018/07

- 14 -

~ Control Buttons ~

Functions of Control Button are shown below.

[DEL] button : Checked step is deleted.

[INS] button : The last deleted step is inserted to checked step.

[Start Step] select : Select start step.

No.1 Step : Start from No.1 step.

Checked Step : Start from checked step.

[Start] button : Executes the sequence.

[Stop] button : Stops the sequence.

[Help] button : Opens a help window.

[Save] button : Saves sequence settings as a file. The file name is “*.aks”.

[Open] button : Opens a sequence setting file “*.aks”.

[Close] button : Closes the dialog box and finishes the process.

~ Stop of the Sequence ~

When “Stop” is selected in the sequence, the process is paused at this step and restart step number is checked.

It starts again from the checked step by clicking the [Start] button. When the process at the end of sequence is finished, “Step No.1” of

[start step] is selected automatically.

ASAHI KASEI [AKD4940-A]

<KM126402> 2018/07

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4. [Sequence(File)]: Sequence Setting File Dialog Box

Click [Sequence(File)] button to open sequence setting file dialog box.

Those files saved in the “Sequence setting dialog” can be applied in this dialog.

figure 27. Window of [ Sequence(File) ]

[Open (left)] : Opens a sequence setting file (*.aks).

[Start] : Executes the sequence by the setting of selected file.

[Start All] : Executing all sequence settings.

Selected files are executed in descending order.

[Help] : Opens a help window.

[Save] : Saves a sequence setting file assignment. The file name is “*.mas”.

[Open(right)] : Opens a saved sequence setting file assignment “*. mas”.

[Close] : Closes the dialog box and finishes the process.

~ Operating Suggestions ~

1. Those files saved by [Save] button and opened by [Open] button on the right of the dialog “*.mas” should be

stored in the same folder.

2. When “Stop” is selected in the sequence the process will be paused and a pop-up message will appear. Click

“OK” to continue the process.

ASAHI KASEI [AKD4940-A]

<KM126402> 2018/07

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Mesurement Data

[Measurement condition]

 Measurement unit : SYS-2722(No.00750) PSIA-2722(No.00121)

 BICK : 64fs

 LRCK : 48 kHz

 Bit : 24bit

 Input Frequency : 1kHz

 Power Supply : AVDD = TVDD = +3.3V(Regulator)

 Band Width : 20 Hz ~ 4 kHz (fs=8kHz)、20 Hz ~ 20 kHz (fs=48 kHz)

 Pass : SYS-2722 (PSIA)⇔AK4940

 Temperature : Room Temperature

[Measurement Result]

1. Gain Amp+Monaural ADC (IN1P / IN1N pins, IN2P / IN2N pins, MGNL/R=”+0dB”)

Parameter

Input

Signal

Fs

filter

Results

Units

IN1P/IN1N

IN2P/IN2N

S/(N+D)

-1dBFS

8kHz

4kHz LPF

105.3

105.6

dBFS

Dynamic Range

-60dBFS

None

107.0

106.8

S/N

No Signal

None

106.7

S/(N+D)

-1dBFS

48 kHz

20kHz LPF

92.0

Dynamic Range

-60dBFS

A-weighted

98.9

98.8

S/N

No Signal

A-weighted

99.0

98.9

2. DAC+Line-out (OUT1P / OUT1N pins, OUT2P / OUT2N pins, OUT3 pins)

Parameter

Input

Signal

Fs

filter

Results

Units

OUT1P/OUT1N

OUT2P/OUT2N

OUT3

S/(N+D)

0dBFS

8 kHz

4kHz LPF

90.2

89.3

89.4

dBFS

Dynamic Range

-60dBFS

None

107.4

107.7

S/N

No Signal

None

107.3

107.4

107.6

S/(N+D)

0dBFS

48 kHz

20kHz LPF

87.9

87.8

87.4

Dynamic Range

-60dBFS

A-weighted

103.8

104.1

104.3

S/N

No Signal

A-weighted

104.0

104.4

ASAHI KASEI [AKD4940-A]

<KM126402> 2018/07

- 17 -

Date

(YY/MM/DD)

Manual

Revision

Board

Revision

Reason

Contents

17/09/19

KM126400

0

First Edition

18/04/10

KM126401

1

Changed

Device revision up.(Rev.A→Rev.B)

18/04/10

KM126401

1

Modification

Schematic update.

18/07/03

KM126402

1

Changed

Control Soft update.

18/07/03

KM126402

1

Modification

Add measurement data.

IMPORTANT NOTICE

0. Asahi Kasei Microdevices Corporation (“AKM”) reserves the right to make changes to the information contained in this

document without notice. When you consider any use or application of AKM product stipulated in this document

(“Product”), please make inquiries the sales office of AKM or authorized distributors as to current status of the Products.

1. All information included in this document are provided only to illustrate the operation and application examples of AKM

Products. AKM neither makes warranties or representations with respect to the accuracy or completeness of the

information contained in this document nor grants any license to any intellectual property rights or any other rights of

AKM or any third party with respect to the information in this document. You are fully responsible for use of such

information contained in this document in your product design or applications. AKM ASSUMES NO LIABILITY FOR

ANY LOSSES INCURRED BY YOU OR THIRD PARTIES ARISING FROM THE USE OF SUCH INFORMATION

IN YOUR PRODUCT DESIGN OR APPLICATIONS.

2. The Product is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of

quality and/or reliability and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious

property damage or serious public impact, including but not limited to, equipment used in nuclear facilities, equipment

used in the aerospace industry, medical equipment, equipment used for automobiles, trains, ships and other

transportation, traffic signaling equipment, equipment used to control combustions or explosions, safety devices,

elevators and escalators, devices related to electric power, and equipment used in finance-related fields. Do not use

Product for the above use unless specifically agreed by AKM in writing.

3. Though AKM works continually to improve the Product’s quality and reliability, you are responsible for complying with

safety standards and for providing adequate designs and safeguards for your hardware, software and systems which

minimize risk and avoid situations in which a malfunction or failure of the Product could cause loss of human life, bodily

injury or damage to property, including data loss or corruption.

4. Do not use or otherwise make available the Product or related technology or any information contained in this document

for any military purposes, including without limitation, for the design, development, use, stockpiling or manufacturing of

nuclear, chemical, or biological weapons or missile technology products (mass destruction weapons). When exporting

the Products or related technology or any information contained in this document, you should comply with the applicable

export control laws and regulations and follow the procedures required by such laws and regulations. The Products and

related technology may not be used for or incorporated into any products or systems whose manufacture, use, or sale is

prohibited under any applicable domestic or foreign laws or regulations.

5. Please contact AKM sales representative for details as to environmental matters such as the RoHS compatibility of the

Product. Please use the Product in compliance with all applicable laws and regulations that regulate the inclusion or use

of controlled substances, including without limitation, the EU RoHS Directive. AKM assumes no liability for damages or

losses occurring as a result of noncompliance with applicable laws and regulations.

6. Resale of the Product with provisions different from the statement and/or technical features set forth in this document

shall immediately void any warranty granted by AKM for the Product and shall not create or extend in any manner

whatsoever, any liability of AKM.

7. This document may not be reproduced or duplicated, in any form, in whole or in part, without prior written consent of

AKM.

Revision History

5

4

3

2

1

D D

C C

B B

A A

AVSS

OUT1P

OUT1N

IN1P

OUT3

OUT2N

OUT2P

IN2N

IN2P

PDN

STO

IN1N

LRCK

TEST

AVDD

SDOUT

DVSS

TVDD

SDIN

BICK

SCL

SDA

AVDRV

VCOM

GND

GND GND

GND

GNDGND

GND

GND GND

GND

GND GND

GND

GNDGND

GND

OUT1N

OUT1P

BICK

OUT3

OUT2P

OUT2N

IN2N

IN2P

PDN-CODEC

STO

IN1N

IN1P

LRCK

TEST

TVDD

AVDD

SDIN

SDOUT

SCL

SDA

Title

Size Document Number Rev

Date: Sheet of

Main

1

<AKD4940-A>

A2

1 5Tuesday, April 10, 2018

Title

Size Document Number Rev

Date: Sheet of

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1

<AKD4940-A>

A2

1 5Tuesday, April 10, 2018

Title

Size Document Number Rev

Date: Sheet of

Main

1

<AKD4940-A>

A2

1 5Tuesday, April 10, 2018

+

C103

10u

TP112

TP103

R107 0

TP108

TP105

TP106

C107 2.2u

R105 0

TP121

TP124

LE101

2 1

R103 0

TP119

TP117

C101 2.2u

TP113

CN104

92pin_1

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

CN102

92pin_4

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

TP114

TP118

CN101

92pin_3

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

TP116

TP120

R109 0

+

C106

10u

TP107 TP110

TP109

R108 0

R106 0

CN103

92pin_2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

R101 open

TP102

R104 0

TP101

C104

0.1u

C102 open

TP115

TP111

TP104

U101

AK4940VN

IN2P

1

IN1N

2

IN1P

3

TEST

4

BICK

5

LRCK

6

SDOUT

7

SDIN

8

DVSS

9

TVDD

10

SDA

11

SCL

12

PDN

13

STO

14

AVDRV

15

OUT2N

16

OUT2P

17

OUT3

18

OUT1N

19

OUT1P

20

AVDD

21

VCOM

22

AVSS

23

IN2N

24

TAB

25

C105

0.1u

TP123

R111 0

R110 0

R102 10k

TP122

+

C108 open(s)

5

4

3

2

1

D D

C C

B B

A A

OUT2N

OUT1P

OUT2P

OUT1N

Diff Sel

1-2 :Full-diff

2-3 :Pseudo-diff or Single Ended

IN1N

IN2P

IN1P

IN2N

Diff Sel

1-2 :Full-diff

2-3 :Pseudo-diff or Single Ended

GND

GND GND

OUT1N

OUT1P

OUT2N

OUT2P

OUT3

IN1N

IN2N

IN1P

IN2P

Title

Size Document Number Rev

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1

<AKD4940-A>

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2 5

Tuesday, April 10, 2018

Title

Size Document Number Rev

Date: Sheet of

INPUT&OUTPUT

1

<AKD4940-A>

A4

2 5

Tuesday, April 10, 2018

Title

Size Document Number Rev

Date: Sheet of

INPUT&OUTPUT

1

<AKD4940-A>

A4

2 5

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J202

AIN2

5

2

1

+

C202 10u(s)

TP201

IN1N

TP206

OUT1P

J201

AIN1

5

2

1

TP209

OUT3

+

C204 10u(s)

TP207

OUT2N

TP203

IN2N

+

C201 10u(s)

R203

open(s)

R204

open(s)

+

C20710u(s)

R202

open(s)

JP202

2

1

3

J205

AOUT3

1 2

3

4

5

+

C20610u(s)

C210

open(s)

J204

AOUT2

5

2

1

R205

open(s)

+

C20810u(s)

TP208

OUT2P

TP205

OUT1N

TP202

IN1P

+

C203 10u(s)

C212

open(s)

C213

open(s)

+

C20510u(s)

C211

open(s)

JP201

2

1

3

+

C20910u(s)

TP204

IN2P

J203

AOUT1

5

2

1

C214

open(s)

R201

open(s)

5

4

3

2

1

D D

C C

B B

A A

GND

D3.3V

PDN-4118A

D3.3V

DIF0-4118A

DIF1-4118A

DIF2-4118A

D3.3V

INT0

D3.3V

TVDDD3.3V

SDIN

SDOUT

BICK

LRCK

INT0

STO

Title

Size Document Number Rev

Date: Sheet of

AK4118A

1

<AKD4940-A>

A3

3 5Tuesday, April 10, 2018

Title

Size Document Number Rev

Date: Sheet of

AK4118A

1

<AKD4940-A>

A3

3 5Tuesday, April 10, 2018

Title

Size Document Number Rev

Date: Sheet of

AK4118A

1

<AKD4940-A>

A3

3 5Tuesday, April 10, 2018

C304

0.1u

AK4118A

U301

AK4118A

IPS0

1

NC1

2

DIF0

3

TEST2

4

DIF1

5

VSS1

6

DIF2

7

IPS1

8

P/SN

9

XTL0

10

XTL1

11

VIN

12

TVDD

13

NC2

14

TX0

15

TX1

16

BOUT

17

COUT

18

UOUT

19

VOUT

20

DVDD

21

VSS2

22

MCKO1

23

LRCK

24

SDTO

25

BICK

26

MCKO2

27

DAUX

28

XTO

29

XTI

30

PDN

31

CM0

32

CM1

33

OCKS1

34

OCKS0

35

INT0

36

INT1

37

AVDD

38

R

39

VCOM

40

VSS3

41

RX0

42

NC3

43

RX1

44

TEST1

45

RX2

46

VSS4

47

RX3

48

R318 open

C312

0.1u

C314

0.1u

L301 10uH

+

C309 10u

R307 0

R311 0

C315

0.1u

R316 10k

R313 1k

C306 8p

R301 470

R314 10k

LE302

STO

2 1

JP302

BICK-SEL

AK4118A

EXT

2

1

3

X301

24.576MHz

12

R306 0

C310 0.1u

R308 0

C313

0.1u

+

C311 10u

U304

ADG3304

VCCA

1

A1

2

A2

3

A3

4

A4

5

NC1

6

GND

7

EN

8

NC2

9

Y4

10

Y1

13

VCCY

14

Y2

12

Y3

11

R303 680

C302 0.1u

C303

0.47u

R310 0

+

C305

10u

+

C301 10u

LE303

2 1

R312 0

R317 10k

JP304

LRCK-SEL

AK4118A

EXT

2

1

3

JP301

SDOUT-SEL

AK4118A

EXT

2

1

3

R315 10k

C307 8p

R302

10k

PORT301

RX-OPT

OUT

1

VCC

3

GND

2

U302

SN74LVC2G14DCK

1A

1

GND

2

2Y

4

VCC

5

2A

3

1Y

6

PORT303

1:BICK 2:GND

3:LRCK 4:GND

5:SDIN 6:GND

7:SDOUT 8:GND

12

34

56

78

C308 0.1u

LE301 PDN-4118A

21

PORT302

TX-OPT

GND

1

VCC

2

IN

3

JP303

SDIN-SEL

AK4118A

EXT

2

1

3

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AKM AK4940VN Evaluation Board Manual

AKM AK4940VN Evaluation Board Manual

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