Interfaces and Connectors
EPM-32 Reference Manual
40
Audio
The audio interface on the EPM-32 is implemented using the Analog Devices AD1981B Audio
Codec. This interface is AC ’97 2.3 compatible. Drivers are available for most Windows-based
operating systems. To obtain the most current versions, consult the EPM-32 product support page
at
www.VersaLogic.com/private/cheetahsupport.asp.
JS7 provides the line-level stereo input and line-level stereo output connection points. The
outputs will drive any standard-powered PC speaker set.
These connectors use IEC 61000-4-2-rated TVS components to help protect against ESD
damage.
S
OFTWARE
C
ONFIGURATION
The audio interface uses PCI interrupt “INTB#”. CMOS Setup is used to select the IRQ line
routed to INTB#.
The audio controller can be disabled within CMOS Setup.
Table 14: JS7 Audio Connector
JS7 Pin
Signal
Name
Function
1
LINE_OUTR
Line-Out Right
2
Ground
Ground
3
LINE_OUTL
Line-Out Left
4
Ground
Ground
5
LINE_INR
Line-In Right
6
Ground
Ground
7
LINE_INL
Line-In Left
8
Ground
Ground