AK7734 데이터 시트보기 (PDF) - Asahi Kasei Microdevices

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AK7734

Audio DSP with 2-Channel ADC/SRC

Asahi Kasei Microdevices 

[AK7734]

No. Name

1 TESTI1

2 CKM[2]

3 CKM[1]

4 SDIN1

5 JX0

SDIN2

6 JX1

SDIN3

7 BITCLKI1

8 LRCLKI1

9 DVDD

10 VSS1

11 XTI

12 XTO

13 SDOUT4

14 SDOUT3

15 SDOUT2

16 SDOUT1

17 VSS2

18 DVDD

19 I2CSEL

20 INITRSTN

21 CKM[0]

22 LRCLKO

PIN FUNCTION

I/O

Function

Classification

I Test1 Pin (Internal pull-down)

This pin must be connected to VSS.

Test

I Clock Mode Select Pin2

Mode Select

I Clock Mode Select Pin1

Mode Select

I Serial Data Input Pin1

Digital Input

Conditional Jump Pin0

I A conditional jump pin (JX0) is available by setting control register (JX0E) to Conditional Input

“1”.

I Serial Data Input Pin2

Digital Input

Conditional Jump Pin1

I A conditional jump pin (JX1) is available by setting control register (JX1E) to Conditional Input

“1”.

I Serial Data Input Pin2

Digital Input

I

Serial Bit Clock Input Pin1

Normally connected to the Bluetooth Data Clock line (256kHz/512kHz).

System Clock

I

LR Channel Select Clock Pin1

Normally connected to the Bluetooth LR Clock line (8kHz).

System Clock

- Power Supply for Digital Section 3.0V ~ 3.6V

Digital

Power Supply

- Ground Pin 0V

Power Supply

Crystal oscillator input pin

I Connect a crystal oscillator between this pin and the XTO pin, or input an

Clock

external clock to the XTI pin.

Crystal oscillator output pin

O

When a crystal oscillator is used, connect it between XTI and XTO. When an

external clock is used, leave this pin open. During initial reset, the output of

Clock

this pin is not determinable.

O Serial Data Output Pin4

Outputs “L” during initial reset.

Digital Output

O Serial Data Output Pin3

Outputs “L” during initial reset.

Digital Output

O Serial Data Output Pin2

Outputs “L” during initial reset.

Digital Output

O Serial Data Output Pin1

Outputs “L” during initial reset.

Digital Output

- Ground Pin 0V

Power Supply

- Power Supply for Digital Section 3.0V ~ 3.6V

I2C BUS Select Pin (Internal pull-down)

Digital

Power Supply

I

I2CSEL pin = “L”: 4-wired Interface

I2CSEL pin = “H”: I2CBus selected mode. SCL and SDA are active.

I2C Select

I2CSEL should be connected to “L” (VSS) or “H” (DVDD).

Reset Pin (for initialization)

I Use to initialize the AK7734. When changing CKM [3:0] and changing XTI

Reset

or BITCLK input frequency, it is necessary to set this pin.

I Clock Mode Select Pin

Mode Select

O LR Channel Select Clock Pin

System Clock

Outputs “L” during initial reset in master mode.

Output

MS1033-E-02-PB

6

2010/01

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