CS4294SLASHCS4298 datasheet(23/66 Pages) CIRRUS

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CS4202

DS549PP2

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

Mute

000000000

MM5

MM4

MM3

MM2

MM1

MM0

D15

D14

D13

D12

D11

D10

Mute

0000000000

PV3

PV2

PV1

PV0

D15

D14

D13

D12

D11

D10

Mute

0000000000

GN4

GN3

GN2

GN1

GN0

CS4294/CS4298 数据表(PDF) 23 Page - Cirrus Logic

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