AKM AK4558EN Evaluation Board Manual

Brand: AKM

Model: AK4558EN

Type: Evaluation Board Manual

[AKD4558-A]

<KM116602> 2015/04

GENERAL DESCRIPTION

The AKD4558-A is an evaluation board for AK4558, which is 24/32bit, CODEC including 2ch ADC and

2ch DAC. The control settings of this board may be controlled via USB port, allowing for easy A/D and

D/A evaluation. BNC connectors are used for the input and output of the analog signals. This board also

has a digital interface which can be connected to the digital audio system via optical connector.

 Ordering guide

AKD4558-A -- Evaluation board for AK4558

Control software included with package

FUNCTION

 Clock generator circuit (AK4118A used)

 Compatible with 2types of digital audio interface

- Optical input (x1) / Optical output (x1)

- Pin header for external data source

 BNC connector for an external clock input

 ADC 2ch input, DAC 2ch output

 USB port and 10pin header for board control

Figure 1. AKD4558-A Block Diagram

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

AK4558 Evaluation Board Rev.2

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Evaluation Board Diagram

 Board Diagram

J700

SW401

J200

J202

SW500

SW400

J706

J701 J702

J703

J705 J704

PORT600

PORT1

PORT2

SW300

U60

SW501

J400

J201

J203

Figure 2. AKD4558-A Board Diagram

 Description

(1) U1 ( AK4558 )

24/32bit,2ch A/D Converter, 2ch D/A Converter.

(2) J200, J201, J202, J203 ( Analog data )

J200, J201 BNC connector : Analog Input for LIN, RIN.

J202, J203 BNC connector : Analog Output for LOUT, ROUT.

(3) PORT1, PORT2 ( Optical Connector )

PORT1 : Input optical signal to AK4118A.

PORT2 : Output optical signal from AK4118A.

(4) J700, J701, J702, J703, J704, J705, J706 ( Power supply )

J700 (+12V) : +12V Power Supply

J701 (AVDD1), J704 (D3.3V) : 3.3V Power Supply

J702 (TVDD) : 1.8V/3.3V Power Supply

J703 (VDD18) : 1.8V Power Supply

J705 (AVSS), J706 (DGND) : GND

(5) U2 ( AK4118A )

AK4118A has DIR, DIT and X’tal oscillator.

Transports input data to AK4558 when working in master mode, and output data from AK4558 when working in

slave mode.

(6) U60 ( PIC18F4550 )

USB control chip. Sets up AK4558 registers from PC via USB port (PORT600).

(7) J400 (BNC Connector)

Input external clock source.

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(8) SW300 ( Dip-switch )

DIP type switch. Sets clock and audio format of AK4118A. DIF[2:0] used to set audio interface format and

OCKS[1:0] used to master clock frequency.

(9) SW500, SW501 ( Dip-switch )

DIP type switch. Sets clock and audio format and filter of AK4558.

(10)SW400 ( Toggle switch )

Toggle type-switch PDN for AK4558.

“H” : PDN = High

“L” : PDN = Low

(11)SW401 ( Toggle switch )

Toggle type-switch PDN for AK4118A.

“H” : PDN = High

“L” : PDN = Low

(12)T1, T2, T3 ( regulator )

Regulator for AK4558, AK4118A, Logic Circuit.

T1 : Regulated AVDD1, TVDD (3.3V) from +12V.

T2 : Regulated TVDD, VDD18 (1.8V) from +12V.

T3 : Regulated D3.3V (3.3V) from +12V.

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Evaluation Board Manual

 Operation sequence

[1] Power supply line settings

[2] Jumped pins settings

[3] DIP switches settings

[4] Toggle switches settings

[5] Data format settings

[6] Register control (Serial control)

[7] Evaluation modes

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[1] Power supply line settings

(1-1) Power supply settings : Used the regulator (T1,T2,T3) <Default>

Set up the power supplied lines.

* Each supply line should be distributed from the power supply unit.

Name Color Setting (Typ) Function Comments Default Settings

J700 +12V Red +12V Regulator power supply Should always be connected +12V

J701 AVDD1 Red +3.3V AK4558 AVDD 3.3V regulator is used

(JP700=1pin-2pin short) by

default, when jack is used

(JP700=2pin-3pin short)

REG :

(JP700=1pin-2pin

short)

J702 TVDD Red +1.8 / +3.3V/ AK4558 TVDD, Logic

IC power supply

1.8V regulator is used

(JP702=1pin-2pin short and

JP701=REG1.8V) by default,

when 3.3V regulator is used

(JP702=1pin-2pin short and

JP701=REG3.3V), when jack

is used (JP702=2pin-3pin

short)

REG (1.8V) :

(JP702=1pin-2pin

short and

JP701=REG1.8V)

J703 VDD18 Yellow +1.8V AK4558 VDD18 1.8V regulator is used

(JP703=1pin-2pin short and

JP100=short) by default,

when LDO of AK4558 is

used (JP100=open), when

jack is used (JP703=2pin-3pin

short and JP100=short)

REG :

(JP703=1pin-2pin

short and

JP100=short)

J704 D3.3V Red +3.3V AK4118A 3.3V VDD,

Logic IC power supply

3.3V regulator is used

(JP704=1pin-2pin short) by

default, when jack is used

(JP704=2pin-3pin short)

REG :

(JP704=1pin-2pin

short)

J706 AVSS Black 0V Analog ground Should always be connected 0V

J705 DGND Black 0V Digital ground Should always be connected 0V

Table 1.Power supply line setting (default: used the regulator )

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(1-2) About jumper for power supply

The roles of the jumper for each power supply supplied from the regulator are as follows.

Connection of the jumper for power supply :

Name Function Comments Default Settings

JP700 AVDD1 Select regulator power supply

or jack for AVDD1

AVDD for AK4558:

JP700=1pin-2pin short : 3.3V regulator is used by default.

JP700=2pin-3pin short : Jack is used.

REG :

JP700=1pin-2pin short

JP701 REG3.3V

REG1.8V

Select regulator power supply

3.3V or 1.8V for TVDD

TVDD for AK4558 and Logic IC:

JP701=1pin-2pin short : 3.3V regulator is used.

JP701=2pin-3pin short : 1.8V regulator is used by default.

REG1.8V :

JP701=2pin-3pin short

JP702 TVDD Select regulator power supply

or jack for TVDD

TVDD for AK4558 and Logic IC:

JP702=1pin-2pin short : Regulator is used by default.

JP702=2pin-3pin short : Jack is used.

REG :

JP702=1pin-2pin short

JP703 VDD18 Select regulator power supply

or jack for VDD18

VDD18 for AK4558:

JP703=1pin-2pin short : 1.8V regulator is used by default.

JP703=2pin-3pin short : Jack is used.

REG :

JP703=1pin-2pin short

JP100 VDD18SEL Select External power supply or

LDO power supply of AK4558

for VDD18

VDD18 selector for AK4558:

JP100=short : External Power supply is used by default.

JP100=open : LDO of AK4558 is used.

External :

JP100=short

JP704 D3.3V Select regulator power supply

or jack for D3.3V

D3.3V for AK4118A and Logic IC:

JP704=1pin-2pin short : 3.3V regulator is used by default.

JP704=2pin-3pin short : Jack is used.

REG :

JP704=1pin-2pin short

JP705 GND Select connection / separation

between analog ground and

digital ground.

Analog ground / digital ground short or opem:

JP705=open: Separate analog ground from digital ground

JP705=short: Connect analog ground to digital ground by

default.

Short :

JP705=short

Table 2. Jumper for power supply

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[2] Jumped pins settings

No Names Default Functions

1 JP100 VDD18SEL Short Select Short / Open VDD18.

Open: VDD18 pin of AK4558 open.

Short: VDD18 pin of AK4558 input 1.8V. (default)

2 JP400 EXT Open Open: No input (default)

Short: External MCLK(JACK:J400 EXT) input.

3 JP401 BICK-SEL DIR Select input to AK4558 (U1) BICK Buffer

Case of MCLK=256fs

MCLK/2: 128fs divider

MCLK/4: 64fs divider

MCLK/8: 32fs divider

MCLK/16: 16fs divider

DIR: DIR-AK4118-BICK (default)

PORT3: Pin Header PORT3-BICK

Open: No signal

4 JP402 LRCK-SEL DIR Select input to AK4558 (U1) LRCK Buffer

Case of MCLK=256fs

MCLK/128: 2fs divider

MCLK/256: 1fs divider

MCLK/512: 0.5fs divider

DIR: DIR-AK4118-LRCK (default)

PORT3: Pin Header PORT3-LRCK

Open: No signal

5 JP403 MCKI-SEL DIR PORT3: Pin Header PORT3-MCLK

EXT: External MCLK (JACK:J400 EXT) input.

GND: GND

DIR: DIR-AK4118-MCKI (default)

6 JP404 BICK-PHASE THR

(1pin-2pin

short)

Select polarity (non-inverted output / inverted output) of

BICK_SEL outputs.

THR: Non-inverted output. (default)

INV: Inverted output.

7 JP405 SDTI-SEL DIR Select input to AK4558 (U1) SDTI

DIR: DIR-AK4118-SDTO (default)

PORT4: Pin Header PORT4-SDTI

GND: Digital ground

8 JP406 TDMI-SEL Open Select connect to AK4558 (U1) TDMI/TDMO

DIR: DIR-AK4118-SDTO (default)

TDMI: Pin Header PORT4-TDMI/O

TDMO: Pin Header PORT4-TDMI/O

9 JP407 DAUX_SEL Short Select input to DIT:AK4118 (U2) DAUX

short: AK4558-SDTO is used. (default)

open: No signal

10 JP408 TDMI/O SEL Open Select input/output for AK4558 (U1) TDMI/O

DIR: DIR-AK4118-SDTO

TDMI: TDMI of AK4558 (PinHeader PORT4-TDMI/O)

TDMO: TDMO of AK4558 (PinHeader PORT4-TDMI/O)

open: No signal (default)

11 JP500 PMADL/SCLSEL SCL Select input to AK4558 (U1) PMADL/SCL

SCL: SCL signal input to AK4558. (default)

PMADL: PMADL signal of SW500 input to AK4558.

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12 JP501 PMADR/SDASEL SDA Select input to AK4558 (U1) PMADR/SDA

SDA: SDA signal input to AK4558. (default)

PMADR: PMADR signal of SW500 input to AK4558.

13 JP502 PMDAL/CAD0SEL CAD0 Select input to AK4558 (U1) PMDAL/CAD0

CAD0: CAD0 signal input to AK4558. (default)

PMDAL: PMDAL signal of SW500 input to AK4558.

14 JP503 PMDAR/CAD1SEL CAD1 Select input to AK4558 (U1) PMDAR/CAD1

CAD1: CAD1 signal input to AK4558. (default)

PMDAR: PMDAR signal of SW500 input to AK4558.

15 JP504 TDMI/CKS0SEL CKS00 Select connect to AK4558 (U1) TDMI/CKS0

CKS00: CKS00 signal of SW501 input to AK4558. (default)

TDMI: TDMI/O signal connect to AK4558.

16 JP505 TDMI I/O SEL TDMO0 Select connect to AK4558 (U1) TDMI/TDMO

TDMO: TDMO signal connect to AK4558. (default)

TDMI: TDMI/O signal connect to AK4558.

17 JP700 AVDD1-SEL REG

(1pin-2pin

short)

Select power supply to AVDD

REG(1pin-2pin short): Regulator T1 (default)

(When regulator “T1” is selected, power supply jack

“AVDD1” should be open.)

Jack(2pin-3pin short): Power supply jack J701 “AVDD1”

18 JP701 TVDDVOL-SEL REG1.8V

(2pin-3pin

short)

Select power supply voltage of TVDD

REG3.3V(1pin-2pin short): Regulator T1 (default)

REG1.8V(2pin-3pin short): Regulator T2 (default)

19 JP702 TVDD-SEL TVDD

(1pin-2pin

short)

Select power supply to TVDD

REG(1pin-2pin short): Regulator T1/T2 (default)

(When regulator “T1/T2” is selected, power supply jack

“TVDD” should be open.)

Jack(2pin-3pin short): Power supply jack J702 “TVDD”

20 JP703 VDD18-SEL VDD18

(1pin-2pin

short)

Select power supply to VDD18

REG(1pin-2pin short): Regulator T2 (default)

(When regulator “T2” is selected, power supply jack

“VDD18” should be open.)

Jack(2pin-3pin short): Power supply jack J703 “VDD18”

21 JP704 D3.3V-SEL REG

(1pin-2pin

short)

Select power supply to D3.3V

REG(1pin-2pin short): Regulator T3 (default)

(When regulator “T3” is selected, power supply jack

“D3.3V” should be open.)

Jack(2pin-3pin short): Power supply jack J704 “D3.3V”

22 JP705 GND Short Select connection / separation between analog ground and

digital ground.

Open: Separate analog ground from digital ground

Short: Connect analog ground to digital ground (default)

Table 3. Main board Jumper pin setting

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[3] DIP switches settings

(3-1). Setting for SW300 (Sets AK4118 (U2) audio format and master clock setting)

No. Switch Name Function default

1 DIF0 Set-up of DIF0 pin. (in parallel mode) H

2 DIF1 Set-up of DIF1 pin. (in parallel mode) L

3 DIF2 Set-up of DIF2 pin. (in parallel mode) H

4 OCKS1 Set-up of OCKS1 pin. (in parallel mode) L

5 OCKS0 Set-up of OCKS0 pin. (in parallel mode) L

Table 4. SW1 Setting

Mode

DIF2 pin

SW300_1

DIF1 pin

SW300_2

DIF0 pin

SW300_3

DAUX SDTO

LRCK BICK

DIF2 bit DIF1 bit DIF0 bit I/O I/O

0 0 0 0

24bit, Left

justified

16bit, Right

justified

H/L O 64fs O

1 0 0 1

24bit, Left

justified

18bit, Right

justified

H/L O 64fs O

2 0 1 0

24bit, Left

justified

20bit, Right

justified

H/L O 64fs O

3 0 1 1

24bit, Left

justified

24bit, Right

justified

H/L O 64fs O

4 1 0 0

24bit, Left

justified

24bit, Left

justified

H/L O 64fs O

5 1 0 1 24bit, I

S 24bit, I

S L/H O 64fs O default

6 1 1 0

24bit, Left

justified

24bit, Left

justified

H/L I 64-128fs I

7 1 1 1 24bit, I

S 24bit, I

S L/H I 64-128fs I

Table 5. Audio format

OCKS1 pin

SW300_4

OCKS0 pin

SW300_5

(X’tal) MCKO1 MCKO2 fs (max)

OCKS1 bit OCKS0 bit

0 0 256fs 256fs 256fs 96 kHz

default

0 1 256fs 256fs 128fs 96 kHz

1 0 512fs 512fs 256fs 48 kHz

1 1 128fs 128fs 64fs 192 kHz

Table 6. Master Clock Frequency Select

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(3-2). Setting for SW500 (Sets AK4558 (U1) )

No. Switch Name Function default

1 PMADL

ADC Lch Power Management Pin in parallel control mode. (PS pin =”H”)

L: ADC Lch Power Down

H: Normal Mode

2 PMADR

ADC Rch Power Management Pin in parallel control mode. (PS pin =”H”)

L: ADC Rch Power Down

H: Normal Mode

3 PMDAL

DAC Lch Power Management Pin in parallel control mode. (PS pin =”H”)

L: DAC Lch Power Down

H: Normal Mode

4 PMDAR

DAC Rch Power Management Pin in parallel control mode. (PS pin =”H”)

L: DAC Rch Power Down

H: Normal Mode

5 CAD1 Chip Address1 Pin in serial control mode. (PS pin =”L”) L

6 CAD0 Chip Address0 Pin in serial control mode. (PS pin =”L”) L

7 LOPS

DAC Lch/Rch Output (LOUT/ROUT) Power Save Mode Pin in parallel

control mode. (PS pin =”H”)

L: Normal Mode

H: DAC LOUT/ROUT Power Save Mode

8 LDOE

LDO Enable Pin

L: LDO disable

H: LDO enable

Table 7. SW500 Setting

(3-3). Setting for SW501 (Sets AK4558 (U1) )

No. Switch Name Function default

1 PS

Control mode select pin.

L: I2C Bus control mode.

H: Parallel control mode.

2 CKS3 Mode Setting Pin #3 L

3 CKS2 Mode Setting Pin #2 H

4 CKS1 Mode Setting Pin #1 H

5 CKS0 Mode Setting Pin #0 H

6 - Not used -

7 - Not used -

8 - Not used -

Table 8. SW501 Setting

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[4] Toggle switches settings

Up=”H”, Down=”L”

[SW401] ( Power Down (PDN) for AK4558):

Power Down (PDN) Switch for AK4558

Reset AK4558 (U1) once by brining SW401 to “L” once upon power-up.

Keep “H” when AK4558 is in use; keep “L” when AK4558 is not in use.

[SW400] ( Power Down (PDN) for AK4118A):

Power Down (PDN) Switch for AK4118A

Reset AK4118A (U2) once by brining SW400 to “L” once upon power-up.

Keep “H” when AK4118A is in use; keep “L” when AK4118A is not in use.

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[5] Data format settings

(5-1) Settings of Data Format (SDTI/SDTO)

Audio Interface Format settings of SDTI/SDTO can be set change by switching CKS3-0.

(5-1-1): Case1 : PS pin = “L”

CKS3 pin CKS2 pin Mode

L L Slave Mode

L H Slave Mode default

H L Slave Mode

H H Master Mode

Table 9. Audio Interface Format setting for AK4558 (PS pin = “L”)

(5-1-2): Case2 : PS pin = “H”

Mode CKS3 CKS2 CKS1 CKS0 HPF M/S MCKI

Audio Interface

Format

0 L L L L ON Slave

128/192fs (Quad Speed)

256/384fs (Double Speed)

512/768fs (Normal Speed)

32bit LJ/RJ

(Mode 5)

1 L L L H ON Slave

256/384/512/768fs

(Normal Speed)

2 L L H L OFF Slave

128/192fs (Quad Speed)

256/384fs (Double Speed)

512/768fs (Normal Speed)

3 L L H H OFF Slave

256/384/512/768fs

(Normal Speed)

4 L H L L ON Slave

128/192fs (Quad Speed)

256/384fs (Double Speed)

512/768fs (Normal Speed)

32bit I

(Mode 7)

5 L H L H ON Slave

256/384/512/768fs

(Normal Speed)

6 L H H L OFF Slave

128/192fs (Quad Speed)

256/384fs (Double Speed)

512/768fs (Normal Speed)

7 L H H H OFF Slave

256/384/512/768fs

(Normal Speed)

8 H L L L ON Slave

128/192fs (Quad Speed)

256/384fs (Double Speed)

512/768fs (Normal Speed)

32bit LJ

(Mode 6)

9 H L L H ON Slave

256/384/512/768fs

(Normal Speed)

10 H L H L OFF Slave

128/192fs (Quad Speed)

256/384fs (Double Speed)

512/768fs (Normal Speed)

11 H L H H OFF Slave

256/384/512/768fs

(Normal Speed)

12 H H L L ON Master 256fs (Double Speed)

32bit I

(Mode 15)

13 H H L H ON Master 512fs (Normal Speed)

14 H H H L ON Master 128fs (Quad Speed)

15 H H H H ON Master 256fs (Normal Speed)

Table 10.Audio Interface Format setting for AK4558 (PS pin = “H”)

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[6] Register control (Serial control)

AKD4558-A can be controlled via USB (serial port). Connect board to PC using the USB cable (PORT600 -

serial) included with the AKD4558-A.

The control software is packed with the evaluation board. The software operation sequence is included in the

evaluation board manual.

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[7] Evaluation modes

(7-1) ADC (Analog  Digital)

 Toggle switch setting:

SW400 SW401

L→H L→H

AK4118(U2) : Used AK4558(U1) : Used

Table 11. Toggle switch setting

 Start up Control Register Setting

1: Port Reset & Write Default.

2: Set Addr: 00h = “1D” to power on ADC. Other control register settings are default.

RSTN bit: Internal timing reset

0: Reset.

1: Normal operation (default)

PMADL/R bit: ADC L/Rch Power management

0: ADC power-down

1: Normal operation (default)

Addr Register Name D7 D6 D5 D4 D3 D2 D1 D0

00H Power Management

0 0 0

PMADR PMADL PMDAR PMDAL RSTN

R/W RD RD RD R/W R/W R/W R/W R/W

Default 0 0 0 0 0 0 0 1

Table 12. Addr 00H control register setting

(7-2) DAC (Digital  Analog)

 Toggle switch setting:

 SW400 SW401

L→H L→H

AK4118(U2) : Used AK4558(U1) : Used

Table 13. Toggle switch setting

 Start up Control Register Setting

1: Port Reset & Write Default.

2: Set Addr: 00h = “07” to power on DAC. Other control register settings are default.

RSTN bit: Internal timing reset

0: Reset.

1: Normal operation (default)

PMDAL/R bit: DAC L/Rch Power management

0: DAC power-down

1: Normal operation (default)

Addr Register Name D7 D6 D5 D4 D3 D2 D1 D0

00H Power Management

0 0 0

PMADR PMADL PMDAR PMDAL RSTN

R/W RD RD RD R/W R/W R/W R/W R/W

Default 0 0 0 0 0 0 0 1

Table 14. Addr 00H control register setting

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Control Software Manual

■ Evaluation Board and Control Soft Settings

1.Set an evaluation board properly.

2.Connect a PC (IBM-AT compatible) and an evaluation board via a USB cable.

The evaluation board recognized as HID (Human Interface Device) on the PC.

It is not necessary to install a new driver.

3.Start up the control program.

When the screen does not display “AKUSBIF-B” at bottom left, reconnect the PC and the USB control box, and

push the [Port Reset] button.

4. Proceed evaluation by following the process below.

[Support OS]

Windows XP / Vista / 7 (32bit) (XP compatible mode is recommended for Vista / 7)

64bit OS’s are not supported.

Figure 3. Control software window

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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.

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

Click this button after the control soft starts up when connecting to PC

2. [Write Default]: Initializes Registers

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

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

4. [All Read]: Executes read commands for all registers displayed.

5. [Save]: Saves current register settings to a file.

6. [Load]: Executes data write from a saved file.

7. [All Req Write]: Opens “All Req Write” dialog box.

8. [Data R/W]: Opens “Data R/W” dialog box

9. [Sequence]: Opens “Sequence” dialog box.

10. [Sequence(File)]: Opens “Sequence(File)” dialog box.

11. [Read]: Reads current register settings and displays on to the register area (on the right of the main window).

This is different from [All Read] button, it does not reflect to a register map, only displaying register

settings in hexadecimal.

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1. [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 4. Window of [REG]

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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 5. 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.

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2. [Tool]: Testing Tools

This tab screen is for the evaluation testing tool.

Click button for each testing tool.

Figure 6. Window of [Tool]

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2-1. [Repeat Test]: Repeat Test Dialog

Click [Repeat Test] button in the Test tab to open a repeat test dialog shown below.

Repeat writing test can be executed by this dialog.

Figure 7. Window of [ Repeat Test ]

[Start] Button : Starts the repeat test.

A dialog for saving a file of the test result will open when clicking this button.

Name the file.

Test will start after specifying a saving file.

[Close] Button : Closes this dialog and finishes the process.

[Address] Box : Data writing address in hexadecimal numbers.

[Start Data] Box : Start data in hexadecimal numbers.

[End Data] Box : End data in hexadecimal numbers.

[Step] Box : Data write step interval.

[Repeat Count] Box : Repeat count of the test writing.

[Up and Down] Box : Data write flow is changed as below.

• Checked: Writes in step interval from the start data to the end data and turn back from the end data

to the start data.

[Example] Start Data = 00, End Data = 05, Step = 1, [ ]…for 1 count.

Data flow: [00→01→02→03→04→05→05→04→03→02→01→00] x Repeat Count Number

• Not checked: Writes in step interval from the start data to the end data and finishes writing.

[Example] Start Data = 00, End Data = 05, Step = 1, [ ]…for 1 count.

Data flow: [00→01→02→03→04→05] x Repeat Count Number

[Sampling Frequency] Box: Selects sampling frequency 44.1kHz/48kHz

[Count] Box : Indicates the count number during a repeat test.

[Lch Level] Box : Indicates the Lch Level during a repeat test.

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AKM AK4558EN Evaluation Board Manual

AKM AK4558EN Evaluation Board Manual

AKM AK4558EN Evaluation Board Manual

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