AD1985 Analog Devices, AD1985 Datasheet - Page 46

• Manufacturer Part Number: AD1985
• Description: AC'97 2.3 Soundmax Codec W/jack Sensing
• Manufacturer: Analog Devices

AD1985
Codec ID and Clock Selection
XTL_IN
GND
GND
GND
XTAL
CLK Input
CLK Input
CLK Input
Note that internally, the ID pins have weak pull-ups and are inverted.
Note also that the clock detection is done per AC ’97 Rev. 2.3 specification.
ID1
0
0
1
1
0
0
1
ID0
0
1
0
1
0
1
X
CODEC ID
Secondary, ID = 3
Secondary, ID = 2
Secondary, ID = 1
Primary, ID = 0
Primary, ID = 0
Primary, ID = 0
Reserved
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CODEC CLOCKING SOURCE
12.288 MHz (BIT_CLK from Primary Codec)
12.288 MHz (BIT_CLK from Primary Codec)
12.288 MHz (BIT_CLK from Primary Codec)
24.576 MHz (Local XTAL or External CLK into XTL_IN)
14.31818 MHZ (External into XTL_IN)
48.000 MHZ (External into XTL_IN)
Reserved