AK4342 datasheet(4/43 Pages) AKM

Part #	AK4342

Description	24-Bit Stereo DAC with HP-AMP & 2V Line-Out

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Manufacturer	AKM [Asahi Kasei Microsystems]

Direct Link	http://www.akm.com

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ASAHI KASEI

[AK4342]

MS0506-E-02

2006/07

- 4 -

PIN/FUNCTION

No.

Pin Name

I/O

Function

SDA

I/O

Control Data Input/Output Pin (I2C pin = “H”)

An external pull-up resister is required.

1

CDTI

I

Control Data Input Pin (I2C pin = “L”)

SCL

I

Control Data Clock Pin (I2C pin = “H”)

An external pull-up resistor is required.

2

CCLK

I

Control Data Clock Pin (I2C pin = “L”)

CAD0

I

Chip Address 0 Select Pin (I2C pin = “H”) (Internal Pull-up Pin to TVDD pin)

3

CSN

I

Control Data Chip Select Pin (I2C pin = “L”) (Internal Pull-up Pin to TVDD pin)

4

MCLK

I

Master Clock Input Pin

5

BICK

I

Serial Bit Clock Pin

This clock is used to latch audio data.

6

LRCK

I

L/R Clock Pin

This clock determines which audio channel is currently being input on SDATA pin.

7

SDATA

I

Audio Serial Data Input Pin

8

PDN

I

Power-down & Reset Pin

When at “L”, the AK4342 is in power-down mode and is held in reset.

The AK4342 must be reset once upon power-up.

9

CP

O

Positive Charge Pump Capacitor Terminal Pin

10

CN

I

Negative Charge Pump Capacitor Terminal Pin

11

PVDD

-

Charge Pump Circuit Positive Power Supply Pin

12

PVSS

-

Charge Pump Circuit Ground Pin

13

PVEE

O

Charge Pump Circuit Negative Voltage Output Pin

14

HVEE

-

Headphone Amp Negative Power Supply Pin

Connected to PVEE pin

15

HPL

O

Lch Headphone Amp Output Pin

16

HPR

O

Rch Headphone Amp Output Pin

17

HVDD

-

Headphone Amp Positive Power Supply Pin

18

HVSS

-

Headphone Amp Ground Pin

19

LOUT

O

Lch Lineout Output Pin

20

ROUT

O

Rch Lineout Output Pin

21

LAUX

O

Lch Auxiliary Output Pin

22

RAUX

O

Rch Auxiliary Output Pin

23

LIN

I

Lch Analog Input Pin

24

RIN

I

Rch Analog Input Pin

25

MUTET

O

Mute Time Constant Control Pin

Connected to AVSS pin through a 1

µF capacitor for mute time constant.

26

VCOM

O

Common Voltage Output Pin

Normally connected to AVSS pin with 0.1

µF ceramic capacitor in parallel with a 2.2µF

electrolytic capacitor.

27

AVDD

-

Analog Power Supply Pin

28

AVSS

-

Analog Ground Pin

29

DVSS

-

Digital Ground Pin

30

DVDD

-

Digital Power Supply Pin

31

TVDD

-

Digital Interface Power Supply Pin

32

I2C

I

Control Mode Select Pin (Internal Pull-up Pin to TVDD pin)

“H”: I

2C Bus, “L”: 3-wire Serial

Note: Do not allow digital input pins except analog input pins (RIN and LIN) and internal pull-up pins (CAD0/CSN and

I2C) to float.

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AK4342 Datasheet(PDF) 4 Page - Asahi Kasei Microsystems

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