STAC9758 Datasheet, PDF (66/119 Pages) Integrated Device Technology – HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS

STAC9758/9759
HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS™
PC AUDIO
8.2.16. General Purpose (20h)
Default: 0000h
D15
D14
D13
D12
D11
D10
D9
D8
POP
RESERVED
3D
RESERVED DRSS1
DRSS0
MIX
MS
D7
D6
D5
D4
D3
D2
D1
D0
LOOPBACK
RESERVED
Bit(s) Reset Value R/W Name
Description
Pop bypass disables DAC-A digital 3D only. This ensures that a recording
15
0
RW POP of the DAC (through Stereo Mix) does not perform the 3D processing
twice.
14
0
RO RESERVED Bit not used, should read back 0
13
0
RW
3D
0 = 3D effect disabled
1 = 3D effect enabled
12
0
RO RESERVED Bit not used, should read back 0
DAC-A Double Rate Slot Select
Rate Slot Select
11:10
00
RW
DRSS <1:0>
00: PCM L, R n+1 data is on Slots 10-11 (default)
01: PCM L, R n+1 data is on slots 7, 8
10: Reserved
11: Reserved
9
0
RW
MIX
Mono Output select (0 = Mix, 1 = Mic)
8
0
RW
MS
Mic Select / Mic Swap
1 = Enables ADC to DAC loop back test
7
0
RW LOOPBACK ^{0 = Loopback Disabled}
Each ADC output will go to all 3 DAC pairs.
6:0
0
RO RESERVED Bits not used, should read back 0
IDT™
66
HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS™
STAC9758/9759
V 1.2 1206