ICE1232 IC Ensemble, ICE1232 Datasheet - Page 21

• Manufacturer Part Number: ICE1232
• Description: ac 97 2.1 VSR Audio Codec With 3D
• Manufacturer: IC Ensemble

Preliminary
SR[2:0]
Record Gain Control Register (Index 1Ch)
Mute
GL[3:0]
GR[3:0]
General Purpose Register (Index 20h)
3D
MIX
MS
LPBK
Rev. 1.5, 1/10/00
Mute
D15
D15
–
D14
D14
–
–
D13
D13
3D
–
Record Source Select (Right Channel)
These bits determine the record source for the right channel.
D12
Record Mute Control
“1” :
“0” :
Record Gain Control (Left Channel)
These four bits select the gain applied to the LEFT channel recording source. The gain is
programmable from 0dB to 22.5dB in 1.5dB increments, providing a total of 16
programmable levels. The gain is set at 0dB when GL[3:0] = 0h.
Record Gain Control (Right Channel)
These four bits select the gain applied to the RIGHT channel recording source. The gain is
programmable from 0dB to 22.5dB in 1.5dB increments, providing a total of 16
programmable levels. The gain is set at 0dB when GR[3:0] = 0h.
D12
3D Stereo Enhancement
“1” :
“0” :
Mono Output Mode
“1” :
“0” :
Microphone Select
“1” :
“0” :
Loopback Mode
“1” :
“0” :
SR2
–
–
0
0
0
0
1
1
1
1
D11
GL3
D11
SR1
–
Mute enabled
Mute disabled
Enable 3D
Disable 3D
Mic Output
Mono mix output
Microphone 2
Microphone 1
DAC/ADC Loopback enabled
DAC/ADC Loopback disabled
0
0
1
1
0
0
1
1
D10
D10
GL2
SR0
–
0
1
0
1
0
1
0
1
GL1
MIX
D9
D9
Right Record Source
Stereo Mix (R)
Video In (R)
GL0
MS
Line In (R)
D8
D8
Aux In (R)
Mono Mix
CD (R)
Phone
Mic
LPBK
D7
D7
–
D6
D6
–
–
D5
D5
–
–
D4
D4
–
–
GR3
D3
D3
–
GR2
D2
D2
–
GR1
D1
D1
–
ICE1232
GR0
D0
D0
–
Default
Default
8000h
0000h
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