[AK4344]

PIN/FUNCTION

No. Pin Name

I/O

Function

1

MCLK

I

Master Clock Input Pin

2

BICK

I

Audio Serial Data Clock Pin

3

SDTI1

I

Audio Serial Data Input Pin1

4

LRCK

I

Input Channel Clock Pin

5

PDN

I

Full Power Down Mode Pin

“L” : Power down, “H” : Power up

6

CSN

I

Chip Select Pin 0

7

CCLK

I

Control Data Clock Pin

8

CDTI

I

Control Data Input Pin

9

TEST1

I

TEST Pin

This pin must be connected to VSS.

10

ROUT

O

Rch Analog Output Pin, The output is “Hi-Z” when PDN pin = “L”.

11

LOUT

O

Lch Analog Output Pin, The output is “Hi-Z” when PDN pin = “L”.

12

VCOM

O

Common Voltage Output Pin, 0.5

× VDD

Normally connected to VSS with a 4.7

μF (min. 1μF, max. 10μF) electrolytic

Capacitor. The output is “L” when PDN pin = “L”

13

VSS

-

Ground Pin

14

VDD

-

Power Supply Pin, 2.7

∼ 3.6V

CDTO

O

Control Data Output Pin in serial mode, The output is “Hi-Z” when PDN pin = “L”.

15

SDTI2

I

Audio Serial Data Input Pin2

16

TEST2

O

TEST Pin

This pin must be OPEN.

Note: All digital input pins should not be left floating.

MS0641-E-00

2007/06

- 4 -