eKA8564A

USB Audio Controller

Product Specification (V0.1) 09.08.2006

• 5

(This specification is subject to change without further notice)

Symbol

Pin No.

I/O

Function

OPNF

31

I

Non-inverting type amplifier. Normally, a feedback resistor

connects from AMPO to OPNF and a gain resistor connects to

MIC.

AMPO

32

O

Gain amplifier output and negative feedback terminal for MIC

ALC

33

I

Automatic Level Control adjustment pin for MIC

F_ROUT

34

O

Front right channel analog audio output pin

VDA2

35

PWR

DAC analog power supply Pin 2

VDA1

36

PWR

DAC analog power supply Pin 1

F_LOUT

37

O

Front left channel analog audio output pin

AGND1

38

PWR

2-channel D/A ground pin

VBUS

39

PWR

USB bus power supply pin

VPHY

40

PWR

PHY and PLL power supply pin

DGND2

41

−

PHY ground pin

DP

42

I/O

USB plus data line interface

DM

43

I/O

USB minus data line interface

DGND1

44

PWR

Digital ground pin

FS_SEL0

FS_SEL1

45,46

I

I

2

S’s Sample Frequency

Sample Frequency

MCLK

00

32kHz

8.192 MHz

01

8kHz

2.048 MHz

10

44.1kHz

11.2896 MHz

11

48kHz

12.288 MHz

Internal pull-high resistors are connected to VD.

MCLKE

47

I

External MCLK enable pin.

0 : use external MCLK and MCLK pin is input pin

1 : use internal MCLK and MCLK pin is output pin

An internal pull-high resistor is connected to VD.

MCLK

48

I/O

Crystal oscillator I/O pin