Data Sheet
USB Audio Controller
SN11220ACF
IV. Pin assignment and description (48-pin LQFP)
PIN No.
Pad Name
Pin Type
Description
EEPROM data output
1
2
DR(EEPROM_ DO) I, ST
EEPROM data input
DW(EEPROM_ DI) O, 4mA, SR
EEPROM clock pin
3
4
5
6
7
SK(EEPROM_SK)
CS(EEPROM_CS)
PADFUN 0
O, 4mA, SR
O, 4mA, SR
I, ST
EEPROM chip select
CODEC function configuration pin 0 (page 11)
CODEC function configuration pin 1 (page 11)
3.3V power pin
PADFUN 1
I, ST
VDD
P
CODEC function configuration pin 3 (page 11)
8
9
PADFUN 3
TAVDD
I, ST
P
Power pin for USB transceiver
USB data plus (D+)
10
11
12
13
USBDP
USBDM
TAVSS
RSTN
I/O
USB data minus (D-)
I/O
Power pin for USB transceiver
System reset pin, low enable. Pull-high this pin.
P
I, ST, PU
LED indicator pin, output low after power on reset,
toggle during operation
14
15
16
LEDN
VOLDN
VOLUP
O, 8mA, SR
I, ST
Volume down control, edge trigger with 64ms
de-bouncing circuit
Volume up control, edge trigger with 64ms de-bouncing
circuit
I, ST
Playback mute control pin, edge trigger with 64ms
de-bouncing circuit
17
18
MUTEP
GPIO2
I, ST
I/O
General Purpose I/O 2
Playback mute led indicator
General Purpose I/O 0
19
20
HIDMUTER
GPIO0
O, 8mA, SR
I/O
Sonix Confidential
- 4 -
Do not copy, reproduce, or distribute without permission
2006 Aug 10, V1.01
SONIX [ SONIX TECHNOLOGY COMPANY ]
