STAC9766 Datasheet, PDF (39/97 Pages) Integrated Device Technology – TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING

STAC9766/9767
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
PC AUDIO
5.6. Slot Assignments for Audio
Figure 19. Bi-directional AC-link Frame with Slot assignments
SLOTS
0123 4567 8
SYNC
9 10 11 12
OUTGOING STREAMS
(Controller output - SDATA_OUT)
TAG
CMD
ADDR
CMD
DATA
PCM
LEFT
PCM
RT
NA
PCM
CTR
PCM
PCM
LSURR RSURR
PCM
LFE
SPDIF
SPDIF
IO
CTRL
INCOMING STREAMS
(codec output - SDATA_IN)
TAG PHASE
TAG
STATUS STATUS
ADDR
DATA
PCM
LEFT
PCM
RT
LINE1
ADC
PCM
MIC
Vendor Vendor Vendor
RSVD RSVD RSVD
LINE2
ADC
HSET
IO
ADC STATUS
DATA PHASE
Slot 12 can be used by the
AC'97 Codec if a Modem
Codec is not present.
Note: The DAC & ADC can be assigned to slots 3&4, 6&9, 7&8, or 10&11.
The AC-link input slots (transmitted to the Codec) are defined as follows:
Table 13. AC-link Input Slots To CODEC
Slot
Name
Description
0 SDATA_OUT TAG
MSBs indicate which slots contain valid data; LSBs convey Codec ID
1 Control CMD ADDR write port Read/write command bit plus 7-bit Codec register address
2 Control DATA write port
16-bit command register write data
3,4 PCM L & R DAC playback 16, 18, or 20-bit PCM data for left and right channels
5 Modem Line 1 DAC
16-bit modem data for modem line 1 output
6, 7, PCM Center, Rear, LFE
8, 9
16, 18, or 20-bit PCM data for Center, L & R Rear, LFE channels
10 Modem Line 2 DAC
16-bit modem data for modem line 2 output
11 Modem handset DAC
16-bit modem data for modem handset output
12 Modem IO control
GPIO write port for modem control
10-12 Double rate audio
Optional AC-link bandwidth for 88.2 or 96 kHz on L, C, R channels
The AC-link input slots (transmitted from the Codec) are defined as follows:
Table 14. AC-link Input Slots From CODEC
Slot
Name
Description
0 SDATA_IN TAG
MSBs indicate which slots contain valid data
1 STATUS ADDR read port MSBs echo register address; LSBs indicate which slots request data
2 STATUS DATA read port 16-bit command register read data
3,4 PCM L & R ADC record
16-bit PCM data from left and right inputs
5 Modem Line 1 ADC
16-bit modem data from modem line 1 input
6 Dedicated Microphone ADC 16-bit PCM data from optional 3rd ADC input
IDT™
39
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH STEREO MICROPHONE AND MIC/JACK SENSING
STAC9766/9767
V 7.4 12/06