Data Sheet

USB AUDIO controller

SN11121ASF

Sonix Confidential

Do not copy, reproduce, or distribute without permission

2004 Jan13, Revision V0.3

6

25

VDDA_PLLA

P

Power pin for internal PLL

26

LFA

I/O

Filter for internal PLL

27

VSSA_PLLA

P

GND pin for internal PLL

27

VSS

P

GND pin

28

XCDCLK(SPI

_CLK)

O, 4mA, SR

SPI

Codec control clock

29

GPIO4

I/O

General Purpose I/O 4

30

GPIO1

I/O

General Purpose I/O 1

31

SDA

I/O, 4mA, SR

IIC data pin

32

SCL

I, ST

IIC clock pin for external MCU control

33

XOUSB

O

6 MHz clock osc pin for USB PLL

34

XIUSB

I

6 MHz clock osc pin for USB PLL

35

VSS

P

GND pin

36

VDD

P

3.3V power pin

37

HIDEN

I, ST

USB HID enable, 1: enable, 0: disable

38

SPDIFO

O, 8mA, SR

SPDIF data output

39

LEDN

O, 8mA, SR

LED indicator pin, output low after power on reset, toggle during operation

40

XSDIN/AC_D

IN

I, ST

I2D Din / AC-link Din

41

PDSW

O, 4mA, SR

Power down switch control -- 0: normal mode, 1: power down mode

42

MUTEP

I, ST

Playback mute control pin, edge trigger with 64ms de-bouncing circuit

43

GPIO2

I/O

General Purpose I/O 2

44

VDD

P

3.3V Power pin

45

VDDA_PLLB

P

Power pin for internal PLL

46

LFB

I/O

Filter for internal PLL

47

VSSA_PLLB

P

GND pin for internal PLL

48

VSS

P

GND pin

** All input pin are 5 volt tolerance, TTL level and Schmitt trigger

All output pins are slew rate control

I – input pin , O – output pin, P – power pin, ST – Schmitt trigger, SR – slew rate

control, PU/PD – pull up or pull down