CS4294SLASHCS4298 datasheet(25/66 Pages) CIRRUS

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CS4202

DS549PP2

4.7

Analog Mixer Input Gain Registers (Index 10h - 18h)

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

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.

Default

8808h. This value corresponds to 0 dB gain and Mute ‘set’.

The Analog Mixer Input Gain Registers are listed in Table 5.

D15

D14

D13

D12

D11

D10

Mute

GL4

GL3

GL2

GL1

GL0

GR4

GR3

GR2

GR1

GR0

Gx4 - Gx0 Gain Level

00000

+12.0 dB

00001

+10.5 dB

……

00111

+1.5 dB

01000

0.0 dB

01001

-1.5 dB

……

11111

-34.5 dB

Table 4. Analog Mixer Input Gain Values

Function

10h

Line In Volume

12h

CD Volume

14h

Video Volume

16h

Aux Volume

18h

PCM Out Volume

Table 5. Analog Mixer Input Gain Register Index

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