Hda/Ac97 Header X49; Low Pin Count Bus (Lpc) - Congatec conga-CEVAL User Manual

4.1.4.1

HDA/AC97 Header X49

The conga-CEVAL includes a HDA header (X49), which allows the connection of other AC'97/HDA solutions. By attaching a solution to this
connector, the onboard codec switches off and the connected application is then operated. congatec developed a HDA evaluation sound board
that features the VIA VT1708 HDA codec. For more information about this product, contact the congatec AG support team.
The following table describes the pinout of connector X49.
Pin Signal
1 +12V (750 mA fuse) Power Supply +12VDC
3 AC_SYNC/HDA_
SYNC
5 AC_SDIN0/2/HDA_
SDOUT0/2
7 AC_SDOUT/HDA_
SDOUT
9 GND
Connector Type
X49: 2.54mm grid header.

Low Pin Count Bus (LPC)

4.1.4.2
To use LPC devices, they must be supported by the COM Express™ module's BIOS. Contact the congatec AG support team for more
information about this subject.
Copyright © 2012 congatec AG
Description Pin Signal
2 +3.3V (750 mA fuse) Power Supply +3.3VDC
48kHz fixed-rate, sample-
4 AC_RST#/HDA_
synchronization signal to the RST#
CODEC(s).
AC_BITCLK/HDA_
Serial TDM data inputs from 6
up to 3 CODECs. SDIN2 is SDOUT
connected to X49 and SDIN0
is connected to the onboard
HDA codec.
SDIN0 and SDIN2 can be
switched with resistor jumpers
as assembly option.
Serial TDM data output to the 8 CODECSET
CODEC. (Input 3.3V)
Power Ground 10 GND
Description
Reset output to AC'97/HDA
CODEC, active low.
12.228 MHz serial data clock
generated by the external
CODEC(s).
Onboard codec disable
input. Pull high to disable
onboard audio codec.
Power Ground
CEVA_c_m10
HDA/AC97
(X49)
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