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