AK7742 查看數據表（PDF） - Asahi Kasei Microdevices

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AK7742

24bit 2ch ADC + 24bit 4ch DAC with Audio DSP

Asahi Kasei Microdevices 

[AK7742]

PIN FUNCTION

No. Pin name

1 AIN3L

2 AIN2R

3 AIN2L

4 AVDD

5 VSS1

6 LFLT

7 TESTI

8 CKM[2]

9 DVDD

10 VSS2

11 XTI

12 XTO

13 SDOUT1

14 SDIN1/JX1

15 SDIN2/JX0

16 CKM[1]

17 CKM[0]

18 IRESETN

19 I2CSEL

20 DVDD

21 VSS2

22 LRCK

23 BICK

24 CLKO/SDOUT3

25

SO/RDY/GPO/

SDOUT2

26 SDA

27 SCL

28 CAD0

29 CAD1

30 VSS1

I/O

Function

Classification

I ADC Lch Single-end input 3 pin

Analog input

I ADC Rch Single-end input 2 pin

Analog input

I ADC Lch Single-end input 2 pin

Analog input

Power supply pin for analog section 3.0V ~ 3.6V

Analog power supply

Analog ground 0V

Analog power supply

O

Filter connection pin for PLL

Connect C=12nF to VSS1. “L” output during initial reset.

Analog output

I

Test pin (internal pull-down resistor)

Connect to VSS2

Test

I Clock mode select pin 2

Mode select

Power supply pin for digital section 3.0V ~ 3.6V

Digital power supply

Digital ground 0V

Digital power supply

Master clock input pin

I When using a crystal oscillator, connect it between this pin and XTO. Clock

When using external main clock, input to this pin with CMOS level.

Crystal oscillator output pin

O

When

When

using a crystal oscillator, connect it between this pin and XTI.

not using crystal oscillator, leave open. Output during initial reset

is

Clock

not determined.

O DSP serial data output pin

“L” output during initial reset

Data interface

I Serial data input pin 1 / JX1

Data interface

I Serial data input pin 2 / JX0

Data interface

I Clock mode select pin 1

Mode select

I Clock mode select pin 0

Mode select

I Reset pin (for initialization)

I

I2CBUS select pin

Connect to DVDD

Reset

Microcomputer I/F

Power supply pin for digital section 3.0V ~ 3.6V

Digital power supply

Digital ground 0V

Digital power supply

I/O LR channel select clock pin

“L” output during initial reset with master mode.

Data interface

I/O Serial bit clock pin

“L” output during initial reset with master mode.

Data interface

O Clock output / DSP serial data output pin

“L” output during initial reset

Clock

Serial data output pin / Data write ready output pin / General purpose output

O / DSP serial data output pin

Microcomputer I/F

“L” output during initial reset

I/O SDA I2C bus interface

I SCL I2C bus interface

I I2C bus address pin 0

I I2C bus address pin 1

Microcomputer I/F

Microcomputer I/F

Microcomputer I/F

Microcomputer I/F

Analog ground 0V

Analog power supply

Rev.0.5b_PB

-5-

2008/08

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