STAC9758 Datasheet, PDF (64/119 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
8.2.14.
Record Select (1Ah)
Default: 0000h (corresponding to Mic in)
Used to select the record source independently for right and left.
D15
D14
D13
D12
D11
D10
D9
D8
RESERVED
SL2
SL1
SL0
D7
D6
D5
D4
D3
D2
D1
D0
RESERVED
SR2
SR1
SR0
Bit(s) Reset Value R/W Name
Description
15:11
0
RO RESERVED Bits not used, should read back 0
LEFT CHANNEL INPUT SELECT
00h = 000b = Mic mux
This selects the output of the MicMux (Reg 66h)
if Reg 20h, bit D8 = 0 then Mic L
if Reg 20h, bit D8 = 1 then Mic R
001 = CD In (left)
10:8
0
RW SL2:S 010 = Not implemented (Mute input to mux)
011 = Aux In (left)
100 = Line In mux (left)
This selects the output of the LineInMux (Reg 66h)
101 = Stereo Mix (left)
110 = Mono Mix
111 = Phone
7:3
0
RO RESERVED Bits not used, should read back 0
RIGHT CHANNEL INPUT SELECT
00h = 000b = Mic mux
This selects the output of the MicMux (Reg 66h)
if Reg 20h, bit D8 = 0 then Mic R
if Reg 20h, bit D8 = 1 then Mic L
001 = CD In (right)
2:0
0
RW SR2:SR0 010 = Not Implemented (Mute input to mux)
011 = Aux In (right)
100 = Line In mux (right)
This selects the output of the LineInMux (Reg 66h)
101 = Stereo Mix (right)
110 = Mono Mix
111 = Phone
IDT™
64
HIGH-PERFORMANCE 6-CHANNEL AC’97 2.3 CODEC WITH UNIVERSAL JACKS™
STAC9758/9759
V 1.2 1206