Cirrus Logic CS42L56 - Manual (Page 65)

DS851F2 65
CS42L56
6.11 Playback Control (Address 0Bh)
6.11.1 Power Down DSP
Configures the power state of the DSP Engine.
6.11.2 HP/Line De-Emphasis
Configures a 15 s/50s (when Fs = 44.1 kHz) digital de-emphasis filter response on the headphone and
line outputs .
6.11.3 Playback Channels B=A
Configures independent or ganged volume and mute control of all playback channels. When enabled, the
channel B settings are ignored and the channel A settings control channel A and channel B.
6.11.4 Invert PCM Signal Polarity
Configures the polarity of the digital input signal.
7 6 5 4 3 2 1 0
PDN_DSP DEEMPH Reserved PLYBCKB=A INV_PCMB INV_PCMA Reserved Reserved
PDNDSP DSP Status DSP Engine Controls/Blocks
0 Powered Up AMIXxMUTE ( “ADC Mixer Channel x Mute” on page 67 )
AMIXxVOL[6:0] ( “ADC Mixer Channel x Volume” on page 67 )
PMIXxMUTE ( “PCM Mixer Channel x Mute” on page 67 )
PMIXxVOL[6:0] ( “PCM Mixer Channel x Volume” on page 68 )
Beep Generator, Tone Control, De-Emphasis
1 Powered Down
DEEMPH De-Emphasis Status
0 Disabled
1 Enabled
PLYBCKB=A
Single Volume Control for all Playback
Channels
Affected Volume Controls
0 Disabled; Independent channel control. AMIXxMUTE ( “ADC Mixer Channel x Mute” on page 67 )
AMIXxVOL[6:0] ( “ADC Mixer Channel x Volume” on page 67 )
PMIXxMUTE ( “PCM Mixer Channel x Mute” on page 67 )
PMIXxVOL[6:0] ( “PCM Mixer Channel x Volume” on page 68 )
MSTxVOL[7:0] ( “Master Volume Control” on page 70 )
HPxMUTE ( “Headphone Channel x Mute” on page 83 )
HPxVOL[7:0] ( “Headphone Volume Control” on page 84
LINExMUTE[7:0] ( “Line Channel x Mute” on page 84 )
LINExVOL[7:0] ( “Line Volume Control” on page 84 )
1
Enabled; Ganged channel control. Channel
A volume control controls channel B volume.
INV_PCMx PCM Signal Polarity
0 Not Inverted
1 Inverted