
P95020 / Preliminary Datasheet
Revision 0.7.10
42
2010 Integrated Device Technology, Inc.
2.15.7 AUDIO - Mixer Input Volume Control - DAC1 Registers (DAC1x_MIX_VOL)
These registers manage the mixer input signal volume for DAC1, Left and Right respectively.
The MSB, bit D7, of each register is the mute bit. When this bit is set, the output is silent.
There are 32 gain selections from 12 dB to -34.5 dB. The step size is 1.5 dB.
DAC1L_MIX_VOL = IC Address = Page-1: 170(0xAA), C Address = 0xA1AA
Bit
Bit Name
Def.
Set.
User
Type
Value
Description / Comments
[4:0]
D1MVL
0Ch
RW
00h = 12 dB gain
0Ch = 0 dB gain
1Fh = 34.5 dB attenuation
Left Volume Control
[6:5]
RESERVED
00b
RW
RESERVED
7
MUTE_L
1b
RW
0 = Not Muted
1 = Muted
Left Mute
DAC1R_MIX_VOL = IC Address = Page-1: 171(0xAB), C Address = 0xA1AB
Bit
Bit Name
Def.
Set.
User
Type
Value
Description / Comments
[4:0]
D1MVR
0Ch
RW
00h = 12 dB gain
0Ch = 0 dB gain
1Fh = 34.5 dB attenuation
Right Volume Control
[6:5]
RESERVED
00b
RW
RESERVED
7
MUTE_R
1b
RW
0 = Not Muted
1 = Muted
Right Mute
2.15.8 AUDIO - Mixer Input Volume Control - Line Input Registers (LINEINx_MIX_VOL)
These registers manage the mixer input signal volume for the Line input, Left and Right respectively.
The MSB, bit D7, of each register is the mute bit. When this bit is set, the output is silent.
There are 32 gain selections from 12 dB to -34.5 dB. The step size is 1.5 dB.
LINEINL_MIX_VOL = IC Address = Page-1: 172(0xAC), C Address = 0xA1AC
Bit
Bit Name
Def.
Set.
User
Type
Value
Description / Comments
[4:0]
LMVL
0Ch
RW
00h = 12 dB gain
0Ch = 0 dB gain
1Fh = 34.5 dB attenuation
Left Volume Control
[6:5]
RESERVED
00b
RW
RESERVED
7
MUTE_L
1b
RW
0 = Not Muted
1 = Muted
Left Mute
LINEINR_MIX_VOL = IC Address = Page-1: 173(0xAD), C Address = 0xA1AD
Bit
Bit Name
Def.
Set.
User
Type
Value
Description / Comments
[4:0]
LMVR
0Ch
RW
00h = 12 dB gain
0Ch = 0 dB gain
1Fh = 34.5 dB attenuation
Right Volume Control
[6:5]
RESERVED
00b
RW
RESERVED
7
MUTE_R
1b
RW
0 = Not Muted
1 = Muted
Right Mute
2.15.9 AUDIO - Input Mixer Input Volume Control - Analog Microphone Registers (AMICx_MIX_VOL)
These registers manage the mixer input signal volume for the Analog Microphone input, Left and Right respectively.
The MSB, bit D7, of each register is the mute bit. When this bit is set, the output is silent.
There are 32 gain selections from 12 dB to -34.5 dB. The step size is 1.5 dB.
AMICL_MIX_VOL = IC Address = Page-1: 174(0xAE), C Address = 0xA1AE
Bit
Bit Name
Def.
Set.
User
Type
Value
Description / Comments
[4:0]
MMVL
0Ch
RW
00h = 12 dB gain
0Ch = 0 dB gain
1Fh = 34.5 dB attenuation
Left Volume Control
[6:5]
RESERVED
00b
RW
RESERVED
7
MUTE_L
1b
RW
0 = Not Muted
1 = Muted
Left Mute