Cirrus-logic CS4202 User Manual download pdf (Page 23)

CS4202

DS549PP2 23

4.3 Mono Volume Register (Index 06h)

Mute Mono Mute. Setting this bit mutes the MONO_OUT output signal.

MM[5:0] Mono Volume Control. The MM[5:0] bits control the mono output volume. Each step corre-

sponds to 1.5 dB gain adjustment, with a total available range from 0 dB to -46.5 dB attenu-

ation. Setting the MM5

bit sets the mono attenuation to -46.5 dB by forcing MM[4:0] to a ‘1’

state. MM[5:0] will read back 011111 when MM5

has been ‘set’. See Table 2 on page 22 for

further attenuation levels.

Default 8000h. This value corresponds to 0 dB attenuation and Mute ‘set’.

4.4 PC_BEEP Volume Register (Index 0Ah)

Mute PC_BEEP Mute. Setting this bit mutes the PC_BEEP input signal.

PV[3:0] PC_BEEP Volume Control. The PV[3:0] bits control the gain levels of the PC_BEEP input

source to the Input Mixer. Each step corresponds to 3 dB gain adjustment, with 0000 = 0 dB.

The total range is 0 dB to -45 dB attenuation.

Default 0000h. This value corresponds to 0 dB attenuation and Mute ‘clear’.

This register has no effect on the PC_BEEP volume during RESET#.

4.5 Phone Volume Register (Index 0Ch)

Mute Phone Mute. Setting this bit mutes the Phone input signal.

GN[5:0] Phone Volume Control. The GN[4:0] bits control the gain level of the Phone 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 attenuation. See Table 4 on page 25 for further attenuation

levels.

Default 8008h. This value corresponds to 0 dB attenuation and Mute ‘set’.

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Mute000000000MM5

MM4 MM3 MM2 MM1 MM0

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Mute0000000000PV3PV2PV1PV00

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0

Mute0000000000GN4GN3GN2GN1GN0

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 65 66

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Cirrus-logic CS4202 User Manual Page 23