ICE1230 IC Ensemble, ICE1230 Datasheet - Page 20

• Manufacturer Part Number: ICE1230
• Description: ac 97 Audio Codec
• Manufacturer: IC Ensemble

IC Ensemble, Inc .
Register Description ( continued... )
Record Gain Control Register (Index 1Ch)
Mute
GL[3:0]
GR[3:0]
General Purpose Register (Index 20h)
MIX
MS
LPBK
20
Mute
D15
D15
–
D14
D14
–
–
D13
D13
–
–
Record Gain Control (Left Channel)
Record Gain Control (Right Channel)
D12
Record Mute Control
“1” :
“0” :
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.
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
Mono Output Mode
“1” :
“0” :
Microphone Select
“1” :
“0” :
Loopback Mode
“1” :
“0” :
–
–
D11
GL3
D11
–
Mute enabled
Mute disabled
Mic Output
Mono mix output
Microphone 2
Microphone 1
DAC/ADC Loopback enabled
DAC/ADC Loopback disabled
D10
GL2
D10
–
GL1
MIX
D9
D9
GL0
MS
D8
D8
LPBK
D7
D7
–
D6
D6
–
–
D5
D5
–
–
D4
D4
–
–
GR3
D3
D3
–
GR2
D2
D2
–
Preliminary
GR1
D1
D1
–
Rev. 1.3, 9/21/98
GR0
D0
D0
–
Default
Default
8000h
0000h