alc203-lf Realtek Semiconductor Corporation, alc203-lf Datasheet - Page 9

• Manufacturer Part Number: alc203-lf
• Description: Two-channel Ac?97 2.3 Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

5. Pin Description
In order to reduce pin count, and therefore size and cost, some pins have multiple functions. In those cases, the functions are
separated with a “/” symbol. Refer to the Pin Assignment diagram for a graphical representation.
5.1 Digital I/O Pins
Two-Channel AC’97 2.3 Audio Codec
SPDIFI/EAPD
SDATA-OUT
SDATA-IN
XTL-OUT
BIT-CLK
XELSEL
RESET#
SPDIFO
XTL-IN
GPIO0
GPIO1
SYNC
Name
Type Pin No
I/O
I/O
IO
O
O
O
O
I
I
I
I
I
11
10
43
44
46
47
48
2
3
6
5
8
AC'97 H/W reset
Sample Sync (48KHz)
Bit clock input/output
(12.288Mhz)
Serial TDM AC97 output
Serial TDM AC97 input
General purpose pin-0.
(Smart volume up)
General purpose pin-1.
(Smart volume down)
Pulled low to use external
14.318MHz clock source
S/PDIF input / External
Amplifier power down
control
S/PDIF output
Crystal input pad
Crystal output pad
Description
5
Schmitt trigger input
Crystal: 24.576M/14.318M crystal input
External: 24.576M/14.318M external clock input
Crystal: 24.576M/14.318M crystal output
External: 24.576M/14.318M clock output
Schmitt trigger input
CMOS input/output
CMOS input
CMOS output
Internally pulled high by a 50K resistor.
Internally pulled high by a 50K resistor.
CMOS input Vt=0.35Vdd, internally pulled high by a 50K
resistor.
CMOS input / output
Digital output has 12 mA@75Ω driving capability.
Characteristic Definition
Total: 13 Pins
ALC203 DataSheet
Rev1.6