alc850 Realtek Semiconductor Corporation, alc850 Datasheet - Page 13

• Manufacturer Part Number: alc850
• Description: Eight Channel Ac?97 2.3 Audio Codec
• Manufacturer: Realtek Semiconductor Corporation

6.
6.1. Digital I/O Pins
Eight Channel AC’97 2.3 Audio Codec
Name
XTL-IN
XTL-OUT
SDATA-
OUT
BIT-CLK
SDATA-IN
SYNC
RESET#
XTLSEL*
SPDIFI/
EAPD
SPDIFO
*XTLSEL=floating, bypass 14.318MHz to 24.576MHz digital PLL. The clock source is 24.576MHz crystal or external
clock.
XTLSEL=pull low, select 14.318MHz to 24.576MHz digital PLL
Pin Description
Pin No
I/O
IO
O
O
O
I
I
I
I
I
Type
10
11
46
47
48
2
3
5
6
8
Description
Crystal input
Crystal output
Serial TDM AC’97 output
Bit clock output (12.288MHz)
Serial TDM AC’97 input
Sample Sync (48Khz)
AC'97 master H/W reset
Crystal selection
S/PDIF input/External Amplifier
power down control
S/PDIF output
Table 1. Digital I/O Pins
5
Characteristic Definition
Crystal input pad
Crystal output pad
Schmitt input, V
CMOS input/output, Vt=0.35Vdd. This pin will be
floating when RESET# is active
CMOS output. Internally pulled low by a 100K
resistor. This pin will be floating when RESET# is
active.
Schmitt input, V
Schmitt input, V
Internally pulled high by a 100K resistor
Digital input with 0.4V Schmitt trigger biased at
1.65V/output
Digital output
L
L
L
Track ID: JATR-1076-21 Rev. 1.4
=0.3Vdd, V
=0.3Vdd, V
=0.3Vdd, V
H
H
H
=0.4Vdd
=0.4Vdd
=0.4Vdd
TOTAL: 10 Pins
Datasheet
ALC850