Instruction Manual

96 DS882F1
CS42L73
page 96). If soft-ramping is disabled, a single volume change will occur according to the
volume control change. If soft ramping is enabled, the volume change is the soft-ramp step
size. With zero cross and soft-ramping enabled, with each zero cross, the volume will step
until it eventually matches the volume control.
6.17.6 Digital Soft-Ramp
Configures an incremental volume ramp from the present level to the new level, at the specified rate. If
Digital Soft-Ramping is enabled (DIGSFT = 1b), the effect of changes to the affected digital volume con-
trols (listed below) is applied progressively over time (see exceptions noted below); if disabled, changes
are applied abruptly, all at once.
Notes:
• This register bit also sets the noise gate mute/unmute volume ramp rate.
• This register bit does not affect the digital mixer’s soft ramping. Register “Mixer Soft-Ramp
Enable” on page 117 configures the digital mixer’s soft ramping.
• This register bit also affects the ALC and Limiter digital volume attack and release rates
(soft-ramped at programmed rates or abrupt). The ALC and Limiter Attack soft-ramping
can be disabled, regardless of this register control bit, via the override controls “ALCx
Soft-Ramp Disable” on page 116 and “Limiter Soft-Ramp Disable” on page 100.
6.17.7 Analog Output Soft Ramp
Configures an incremental volume ramp from the present level to the new level, at the specified rate. If
Analog Output Soft-Ramping is enabled (ANLGOSFT = 1b), the effect of changes to the affected analog
volume controls (listed below) is applied progressively over time; if disabled, changes will be applied
abruptly, all at once.
Notes:
• Refer to section “Analog Zero Cross” on page 95 for a description of the ANLGZC control.
DIGSFT Volume Changes Affected Digital Volume Controls
0 Abruptly take effect with-
out a soft-ramp
IPxMUTE (“Input Path x Digital Mute” on page 97)
IPxDVOL[7:0] (“Input Path x Digital Volume Control” on page 99)
HLxDMUTE (“Headphone/Line Output (HL) x Digital Mute” on page 101)
HLxDVOL[7:0] (“Headphone/Line Output (HL) x Digital Volume Control” on page 101)
ESLDMUTE (“Ear Speaker/Speakerphone Line Output Digital Mute” on page 100)
ESLDVOL[7:0] (“Ear Speaker/Speakerphone Line Output (ESL) [B] Digital Volume Con-
trol” on page 102)
SPKDMUTE (“Ear Speaker/Speakerphone Line Output Digital Mute” on page 100)
SPKDVOL[7:0] (“Speakerphone Out [A] Digital Volume Control” on page 102)
1 Occur with a soft-ramp
Soft-Ramp
Rate:
1/8 dB every Fs cycle
ANLGOSFT Volume Changes Affected Analog Output Volume Controls
0 Abruptly take effect with-
out a soft-ramp
HPxAMUTE (“Headphone x Analog Mute” on page 103)
HPxAVOL[6:0] (“Headphone x Analog Volume Control” on page 103)
LOxAMUTE (“Line Output x Analog Mute” on page 104)
LOxAVOL[6:0] (“Line Output x Analog Volume Control” on page 104)
1 Occur with a soft ramp
Ramp Rate:
ANLGZC = 0b:
1.0 dB (-50 dB to +12 dB) or 2 dB (-76 dB to -50 dB) every 32 Fs cycles
ANLGZC = 1b:
1.0 dB per ANLGZC event