cExpress-TL User’s Guide
PICMG COM.0 R3.0
Page 25
Copyright © 2021 ADLINK Technology, Inc.
4.3.
AB Connector Signal Descriptions
4.3.1
Audio
Name
Pin #
Description
I/O
PU / PD Comment
AC_RST# /
HDA_RST#
A30
Reset output to CODEC, active low.
O
3.3VSB
AC_SYNC /
HDA_SYNC
A29 Sample-synchronization
signal to the CODEC(s).
O
3.3VSB
AC_BITCLK /
HDA_BITCLK
A32
Serial data clock generated by the external CODEC(s). I/O
3.3VSB
AC_SDOUT /
HDA_SDOUT
A33
Serial TDM data output to the CODEC.
O
3.3VSB
AC_SDIN[2:0] /
HDA_SDIN[2:0]
B28- B30 Serial TDM data inputs from up to 3 CODECs.
I/O
3.3VSB
B28 Not supported
Tiger Lake UP3 doesn’t offer this pin