Cirrus Logic CS4202 - Manual (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
Mute 0 0 0 0 0 0 0 0 0 MM5 MM4 MM3 MM2 MM1 MM0
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Mute 0 0 0 0 0 0 0 0 0 0 PV3 PV2 PV1 PV0 0
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Mute 0 0 0 0 0 0 0 0 0 0 GN4 GN3 GN2 GN1 GN0