stac9272 Integrated Device Technology, stac9272 Datasheet - Page 189

• Manufacturer Part Number: stac9272
• Description: 10-channel High Definition Audio Codec
• Manufacturer: Integrated Device Technology

IDT™
STAC9271/9272/9273/9274
10-CHANNEL HIGH DEFINITION AUDIO CODEC
6.31. VolumeKnob Node (NID = 0x24)
10-CHANNEL HIGH DEFINITION AUDIO CODEC
6.31.1. VolumeKnob WCap
[3.:0]
Bit
[4]
Bitfield Name
Get
ADATFRMT
ADAT
Table 465. ADATOut VCSR0
Table 466. VolumeKnob WCap
RW
RW
RW
IDT CONFIDENTIAL
Reset
0x0
0x0
Verb ID
F00
189
ADAT Sample Split Format Select 1: U user bits U3 and U2 in
the transmitted ADAT stream are supplied by bits 3:2 of this
verb (field ADAT), under software control. 0: U user bits U3
and U2 in the transmitted ADAT stream are controlled
automatically by hardware, derived according to the
sample-rate of the outgoing audio stream. Hardware support is
provided for the transfer of double- and quad-rate data
streams over the 48 KHz (nominal) 8-channel ADAT interface.
Two 2-channel (stereo) streams or one 4-channel audio
stream at double-rate or one 2-channel stream at quad-rate
will be sample-split over the appropriate ADAT channels. For
each mode, the ADAT channels are listed in the order of arrival
of the corresponding audio sample: ADAT_2CH_SGL C0,C1
(C2-C7 zero padded) ADAT_2CH_DBL C0,C2,C1,C3 (C4-C7
zero padded) ADAT_2CH_QUAD C0,C4,C1,C5,C2,C6,C3,C7
ADAT_4CH_SGL C0,C1,C2,C3 (C4-C7 zero padded)
ADAT_4CH_DBL C0,C2,C4,C6,C1,C3,C5,C7
ADAT_8CH_SGL C0,C1,C2,C3,C4,C5,C6,C7
ADAT Lightpipe Control Used in conjunction with the ADAT
Sample Rate in the stream converter to generate the 4 bit
ADAT control signals. ADAT0 (U0): Time Code FLAG ADAT1
(U1): MIDI FLAG ADAT2 (U2): 0 = 44.1/48 KHz audio (1X
operation) 1 = 88.2/96 KHz audio (2X operation) ADAT3 (U3):
1 = 176.4/192 KHz audio (4x operation) User bits U0 and U1
are always under software control. User bits U2 and U3 are
also under software control if ADATFRMT is set. If ADATFRMT
= 0, then bits 3:2 here are ignored and the bits transmitted as
U3:U2 are controlled by hardware according to the
sample-rate of the data stream.
Command Response Format
Command Verb Format
Payload
09
STAC9271/9272/9273/9274 V 1.0 MARCH2007
Description
See bitfield table.
Response
PC AUDIO