STAC9704 Datasheet, PDF (8/49 Pages) Hynix Semiconductor – Multimedia Audio Codec for AC97

SigmaTel, Inc.
STAC9704/7
1. PIN/SIGNAL DESCRIPTIONS
1.1 Digital I/O
These signals connect the STAC9704/7 to its AC’97 controller counterpart and an external crystal.
Table 3. Digital Signal List
SIGNAL NAME TYPE
DESCRIPTION
RESET #
I
AC’97 Master H/W Reset
XTL_IN
I
24.576 MHz Crystal
XTL_OUT
O
24.576 MHz Crystal
SYNC
I
48 kHz fixed rate sample sync
BIT_CLK
O
12.288 MHz serial data clock
SDATA_OUT
I
Serial, time division multiplexed, AC’97 input stream
SDATA__IN
O Serial, time division multiplexed, AC’97 output stream
# denotes active low
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10/02/98