STAC9758 Datasheet, PDF (78/119 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
8.3.4.
PCM LR ADC Rate (32h)
Default: BB80h ( see table20: page 77 )
D15
SR15
D7
SR7
D14
SR14
D6
SR6
D13
SR13
D5
SR5
D12
SR12
D4
SR4
8.3.5. Center/LFE Volume (36h)
Default: 8080h
D15
MUTE
D7
MUTE
D14
RESERVED
D6
RESERVED
D13
LFE5
D5
CNT5
D12
LFE4
D4
CNT4
D11
SR11
D3
SR3
D11
LFE3
D3
CNT3
D10
SR10
D2
SR2
D10
LFE2
D2
CNT2
D9
SR9
D1
SR1
D9
LFE1
D1
CNT1
D8
SR8
D0
SR0
D8
LFE0
D0
CNT0
Bit(s)
15
14
13
12:8
7
6
5
4:0
Reset Value R/W
1
RW
0
RO
0
WO
0
RW
1
RW
0
RO
0
WO
0
RW
Name
MUTE
RESERVED
LFE5
LFE[4:0]
MUTE
RESERVED
CNT5
CNT[4:0]
Description
0 = LFE not muted
1 = LFE muted
Bit not used, should read back 0
If a 1 is written to this bit, then LFE<4:0> is loaded with 11111b.
This bit always reads 0.
00h = 00000b = 0.0 dB attenuation
01h = 00001b = -1.5 dB attenuation
.....
1Fh = 11111b = -46.5 dB attenuation
0 = CENTER not muted
1 = CENTER muted
Bit not used, should read back 0
If a 1 is written to this bit, then CNT<4:0> is loaded with 11111b.
This bit always reads 0.
00h = 00000b = 0.0 dB attenuation
01h = 00001b = -1.5 dB attenuation
.....
1Fh = 11111b = -46.5 dB attenuation
8.3.6. Surround Volume (38h)
Default: 8080h
D15
MUTE
D7
MUTE
D14
RESERVED
D6
RESERVED
D13
LSR5
D5
RSR5
D12
LSR4
D4
RSR4
D11
LSR3
D3
RSR3
D10
LSR2
D2
RSR2
D9
LSR1
D1
RSR1
D8
LSR0
D0
RSR0
IDT™
78
HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS™
STAC9758/9759
V 1.2 1206