ICE1232 IC Ensemble, ICE1232 Datasheet - Page 15

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

Preliminary
Register Description
Reset Register (Index 00h)
The Reset register is used to configure the hardware to a known state or to read the ID code of the part. A code
was assigned to IC Ensemble (27 = 11011h) for 3D Stereo Enhancement reflected in SE[4:0]. ID8 and ID6 are
set to 1b to report that the ADC and DAC are 18-bit resolution respectively. The ICE1232 supports an alternate
line level out with independent volume control as reflected by ID4=1b. Writing data to this register will set all
the mixer registers to their default values. For description of the bits set to 0b, refer to AC’97 Rev. 2.1 spec.
Stereo Output Control Register (Index 02h)
Mute
ML[4:0]
MR[4:0]
Alternate Line Output Control Register (Index 04h)
Mute
ML[4:0]
MR[4:0]
Rev. 1.5, 1/10/00
Mute
Mute
D15
D15
D15
–
D14
SE4
D14
D14
–
–
D13
SE3
D13
D13
–
–
D12
D12
ML4
Stereo Output Mute Control
“1” :
“0” :
Master Output (Left Channel) Volume Control
These five bits select the level of attenuation applied to the Left channel of the Stereo
Output signal. The level of attenuation is programmable from 0dB to -46.5dB in 1.5dB
increments, providing a total of 32 programmable levels. Please refer to Table 17 on
page 16 for details.
Master Output (Right Channel) Volume Control
These five bits select the level of attenuation applied to the Right channel of the Stereo
Output signal. The level of attenuation is programmable from 0dB to -46.5dB in 1.5dB
increments, providing a total of 32 programmable levels. Please refer to Table 17 on
page 16 for details.
D12
ML4
Stereo Output Mute Control
“1” :
“0” :
Alternate Line Output (Left Channel) Volume Control
These six bits select the level of attenuation applied to the Left channel of the Stereo
Output signal. The level of attenuation is programmable from 0dB to -46.5dB in 1.5dB
increments, providing a total of 32 programmable levels. Please refer to Table 17 on
page 16 for details.
Alternate Line Output (Right Channel) Volume Control
These five bits select the level of attenuation applied to the Right channel of the Stereo
Output signal. The level of attenuation is programmable from 0dB to -46.5dB in 1.5dB
increments, providing a total of 32 programmable levels. Please refer to Table 17 on
page 16 for details.
SE2
D11
SE1
D11
ML3
D11
ML3
Mute enabled
Mute disabled
Mute enabled
Mute disabled
D10
D10
ML2
D10
ML2
SE0
ML1
ML1
ID9
D9
D9
D9
ML0
ML0
ID8
D8
D8
D8
ID7
D7
D7
D7
–
–
ID6
D6
D6
D6
–
–
ID5
D5
D5
D5
–
–
MR4
MR4
ID4
D4
D4
D4
MR3
MR3
ID3
D3
D3
D3
MR2
MR2
ID2
D2
D2
D2
MR1
MR1
ID1
D1
D1
D1
ICE1232
MR0
MR0
ID0
D0
D0
D0
Default
Default
Default
6D50h
8000h
8000h
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