參數(shù)資料
型號(hào)： STAC9711T
廠商： Electronic Theatre Controls, Inc.
元件分類： Codec
英文描述： Multi-Channel AC97 Codec With Multi-Codec Option
中文描述： 多聲道AC97編解碼器與多編解碼器方案
文件頁(yè)數(shù)： 21/56頁(yè)
文件大?。?/td> 247K
代理商： STAC9711T
SigmaTel, Inc.
Preliminary
STAC9708/11
21
10/02/98
3.1.2.2 Slot 2: Status Data Port
The status data port delivers 16-bit control register read data.
Bit (19:4) Control Register Read Data
Bit (3 :0) RESERVED
(Stuffed with 0's if tagged "invalid")
(Stuffed with 0's)
If Slot 2 is tagged "invalid" by
STAC9708/11,
then the entire slot will be stuffed with 0's.
3.1.2.3 Slot 3: PCM Record Left Channel
Audio input frame slot 3 is the left channel output of
STAC9708/11
input MUX, post-ADC.
STAC9708/11
ADCs are implemented to support 18-bit resolution.
STAC9708/11
outputs its ADC data (MSB first), and stuffs any trailing non-valid bit
positions with 0's to fill out its 20-bit time slot.
3.1.2.4 Slot 4: PCM Record Right Channel
Audio input frame slot 4 is the right channel output of
STAC9708/11
input MUX, post-ADC.
STAC9708/11
outputs its ADC data (MSB first), and stuffs any trailing non-valid bit
positions with 0's to fill out its 20-bit time slot.
3.1.2.5 Slots 5-12: Reserved
Audio input frame slots 5-12 are not used by the
STAC97908/11
and are always stuffed with
0's.
3.2
AC-Link Low Power Mode
The
STAC9708/11
AC-Link can be placed in the low power mode by programming register 26h to the
appropriate value. Both BIT_CLK and SDATA_IN will be brought to, and held at a logic low voltage
level. The AC'97 controller can wake up the
STAC9708/11
by providing the appropriate reset signals.
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