ASAHI KASEI

[AK4525]

MS0053-E-00

2000/9

- 3 -

PIN/FUNCTION

No.

Pin Name

I/O

Function

1

VREFH

I

Positive Voltage Reference Input Pin, VA

Used as a positive voltage reference by ADC & DAC. VREFH should be connected

externally to filtered VA.

2

AINR+

I

Rch Analog Positive Input Pin

3

AINR-

I

Rch Analog Negative Input Pin

4

AINL+

I

Lch Analog Positive Input Pin

5

AINL-

I

Lch Analog Negative Input Pin

6

VA

-

Analog Power Supply Pin

7

AGND

-

Analog Ground Pin

8

XTI

I

X’tal Input Pin

9

XTO

O

X’tal Output Pin

10

DIF0

I

Audio Data Interface Format 0 Pin

11

DIF1

I

Audio Data Interface Format 1 Pin

12

LRCK

I/O

Input/Output Channel Clock Pin

13

SCLK

I/O

Audio Serial Data Clock Pin

14

SDTI

I

Audio Serial Data Input Pin

15

SDTO

O

Audio Serial Data Output Pin

16

SMUTE

I

Soft Mute Pin

When this pin goes “H”, soft mute cycle is initiated.

When returning “L”, the output mute releases.

17

DEM0

I

De-emphasis Frequency Select 0 Pin

18

DEM1

I

De-emphasis Frequency Select 1 Pin

19

TST

I

Test Pin

This pin must be connected to DGND.

20

M/S

I

Master/Slave Mode

(Internal pull-down pin)

“H”: Master mode,

“L”: Slave mode

21

MCKO

O

Master Clock Output Pin

22

VD

-

Digital Power Supply Pin

23

DGND

-

Digital Ground Pin

24

PDN

I

Power-Down Mode Pin

25

CMODE

I

Master Clock Select Pin

(Internal biased pin)

“H”: 384fs,

“L”: 256fs,

“NC”: 512fs

26

AOUTL

O

Lch Analog Output Pin

27

AOUTR

O

Rch Analog Output Pin

28

VCOM

O

Common Voltage Output Pin, VA/2

Note: All input pins except pull-down or biased pins should not be left floating.