ASAHI KASEI

[AK4555]

MS0363-E-01

2005/08

- 3 -

PIN/FUNCTION

No.

Pin Name

I/O

Function

1

VCOM

O

Common Voltage Output Pin, 0.5 x VDD

2

AINR

I

Rch Analog Input Pin

3

AINL

I

Lch Analog Input Pin

4

VSS

-

Ground Pin

5

VDD

-

Power Supply Pin

6

DEM0

I

De-emphasis Control Pin

7

DEM1

I

De-emphasis Control Pin

8

SDTO

O

Audio Serial Data Output Pin

9

SDTI

I

Audio Serial Data Input Pin

10

LRCK

I

Input/Output Channel Clock Pin

11

MCLK

I

Master Clock Input Pin

12

SCLK

I

Audio Serial Data Clock Pin

13

PWADN

I

ADC Power-Down & Reset Mode Pin

“L”: Power down. ADC should always be reset upon power-up.

14

PWDAN

I

DAC Power-Down & Reset Mode Pin

“L”: Power down. DAC should always be reset upon power-up.

15

AOUTL

O

Lch Analog Output Pin

16

AOUTR

O

Rch Analog Output Pin

Note: All input pins except analog input pins (AINR and AINL) should not be left floating.

Handling of Unused Pin

The unused I/O pins should be processed appropriately as below.

Classification

Pin Name

Setting

Analog

AINR, AINL, AOUTL, AOUTR

These pins should be open.

SDTO

This pin should be open.

Digital

SDTI

This pin should be connected to VSS.