16 Sound Interface
Kontron User's Guide EPIC/CE
46
16
Sound Interface
The EPIC/CE uses a Realtek ALC650 sound codec. The ALC650 is an 18-bit, full duplex AC’97 2.2
compatible stereo audio CODEC designed for PC multimedia systems, including host/soft audio and
AMR/CNR based designs. The ALC650 incorporates proprietary converter technology to achieve a high
SNR, greater than 90 dB.
All major operating systems support the interface.
The ALC650 features:
®
High-performance CODEC with high S/N ratio (>90 dB)
®
18-bit ADC and 20-bit DAC resolution
®
Compliant with AC’97 2.2 Specifications
®
18-bit stereo full-duplex CODEC with independent and variable sampling rate
®
One analog line-level stereo input with 5-bit volume control: LINE_IN, (CD_IN is
possible)
®
Stereo Output with 5-bit volume control
®
MIC input
®
Power-management capabilities
®
Embedded 50mW/20ohm OP at front LINE output
®
6 Channel output for multi-channel applications
16.1
Connectors
The EPIC/CE offers two connectors related to the Sound feature. One is the jack connector on the front of
the board and one is an internal connector.
16.1.1
Jack Connector
The standard 3 position jack connector (X23) complies with the standard pin-out used in many
commercially available motherboards. To find the location of the connector on the EPIC/CE board, please
see the Appendix E: Connector Layout chapter. A special version of the EPIC/CE may only be equipped
with a 2 position jack connector (for applications with mechanical restrictions). In this case only jacks
„B“ and „C“ are available. The signals for Jack „A“ are available on the internal connector X14.
The following table shows the general connection of each single audio jack.
Jack
Pin
Signal
Description
1
ASGND
Analog Sound Ground
2
XX
See Next Table
3
NC
Not connected
4
NC
Not connected
5
XX
See Next Table
Summary of Contents for EPIC/CE
Page 1: ...Kontron User s Guide EPIC CE Document Revision 1 14...
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Page 88: ...25 Appendix C Block Diagram Kontron User s Guide EPIC CE 88 25 Appendix C Block Diagram...
Page 93: ...27 Appendix E Connector Layout Kontron User s Guide EPIC CE 93 27 2 Bottom Side...