User Manual

CS4202

DS549PP2 25

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

Mute Stereo Input Mute. Setting this bit mutes the respective input signal, both right an d 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 +1 2 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 Ga in Registers are listed in Table 5.

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

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

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