CS4297A
CS4297A
4.8
Stereo Analog Mixer Input Gain Registers (Index 10h - 18h)
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Mute
0
0
GL4
GL3
GL2
GL1
GL0
0
0
0
GR4 GR3 GR2 GR1 GR0
Mute
Stereo Input Mute. Setting this bit mutes the respective input signal, both right and left inputs.
GL[4:0]
Left Volume Control. The GL[4:0] bits are used to control the gain level of the left analog input
source to the Input Mixer. Each step corresponds to 1.5 dB gain adjustment, with 01000 = 0 dB.
The total range is +12 dB to -34.5 dB gain. See Table 4 for further details.
GR[4:0]
Right Volume Control. The GR[4:0] bits are used to control the gain level of the right analog in-
put source to the Input Mixer. Each step corresponds to 1.5 dB gain adjustment, with 01000 =
0 dB. The total range is +12 dB to -34.5 dB gain. See Table 4 for further details.
Default
8808h. This value corresponds to 0 dB gain and Mute ‘set’.
The Stereo Analog Mixer Input Gain Registers are listed in Table 5.
Gx[4:0] Gain Level
00000
00001
…
+12.0 dB
+10.5 dB
…
00111
01000
01001
…
+1.5 dB
0.0 dB
-1.5 dB
…
11111
-34.5 dB
Table 4. Analog Mixer Input Gain Values
Register Index
Function
Line In Volume
CD Volume
10h
12h
14h
16h
18h
Video Volume
Aux Volume
PCM Out Volume
Table 5. Stereo Volume Register Index
24
24
DS318PP6
CIRRUS [ CIRRUS LOGIC ]
