Digilent Genesys Reference Manual page 15

Genesys Reference Manual
Audio (AC-97)
The Genesys board includes a
National Semiconductor LM4550 AC
'97 audio codec (IC19) with four 1/8"
audio jacks for line-out (J16),
headphone-out (J18), line-in (J15)
and microphone-in (J17). Audio data
at up to 18 bits and 48-kHz sampling
is supported, and the audio in
(record) and audio out (playback) sampling rates can be different. The microphone jack is mono; all
other jacks are stereo. The headphone jack is driven by the audio codec's internal 50mW amplifier.
The table below summarizes the audio jacks.
The LM4550 audio codec is compliant to the AC '97 v2.1 (Intel) standard and is connected as a
Primary Codec (ID1 = 0, ID0 = 0). The table below shows the AC '97 codec control and data signals.
All signals are LVCMOS33.
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Data Signals
D0: G10
D1: G8
D2: B12
D3: D12
D4: C12
D5: D11
D6: F10
D7: D10
D8: E9
D9: F9
D10: E8
D11: F8
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