eKA8564A

USB Audio Controller

4

•

Product Specification (V0.1) 09.08.2006

(This specification is subject to change without further notice)

6

Pin Assignment

Symbol

Pin No.

I/O

Function

BCLK

1

O

BCLK for I

2

S interface

LRCLK

2

O

LRCLK for I

2

S interface

SDATA

3

O

I

2

S interface for FL, FR output

I_BCLK

4

I

BCLK for I

2

S interface

I_LRCLK

5

I

LRCLK for I

2

S interface

I_SDATA

6

I

I

2

S interface for FL, FR input

Play_LED

7

O

Play LED

Power_LED

8

O

Power LED

REC_Mute_LED

9

O

Record Mute LED

SPK_Mute_LED

10

O

Speaker Mute LED

MuteREC

11

I

Mute record button

Vol-

12

I

Volume down button

Vol+

13

I

Volume up button

MuteSPK

14

I

Mute Speaker button

SPT

15

I

Media Key: Scan previous track button

SNT

16

I

Media Key: Scan next track button

Stop

17

I

Media Key: Stop button

PlayPause

18

I

Media Key: Play/Pause button

RECORD_SEL

19

I

Record select pin.

1 : I

2

S record

0 : ADC record

An internal pull-low resistor is connected to DGND.

OSCO

20

O

Crystal output

OSCI

21

I

Crystal input

Test

22

I

Test mode select pin

Test = 0, enter normal mode

Test = 1, enter test mode

An internal pull-low resistor is connected to DGND.

PLLC

23

I

External capacitor for PLL

VAD

24

PWR

ADC analog power supply pin

AGND3

25

−

A/D and PLL ground pin

VA

26

PWR

Analog power supply pin

VMIC

27

O

Power supply for external MIC

MIC_IN

28

I

Microphone analog input pin

Vref

29

O

Bandgap reference output

AGND2

30

−

MIC ground pin