Confidential Draft
3/4/10
7.11 Miscellaneous Controls (Address 0Eh)
7
6
5
4
PASSTHRUB PASSTHRUA PASSBMUTE PASSAMUTE
3
FREEZE
2
DEEMPH
CS43L22
1
DIGSFT
0
DIGZC
7.11.1 Passthrough Analog
Configures an analog passthrough from the analog inputs to the headphone/line outputs.
PASSTHRUx
0
1
Analog In Routed to HP/Line Output
Disabled
Enabled
7.11.2 Passthrough Mute
Configures an analog mute on the channel x analog in to analog out passthrough.
PASSxMUTE
0
1
Passthrough Mute
Disabled
Enabled
7.11.3 Freeze Registers
Configures a hold on all register settings.
FREEZE
0
1
Control Port Status
Register changes take effect immediately
Modifications may be made to all control port registers without the changes taking effect until after the
FREEZE is disabled.
7.11.4 HP/Speaker De-Emphasis
Configures a 15μs/50μs digital de-emphasis filter response on the headphone/line and speaker outputs.
DEEMPHASIS
0
1
Control Port Status
Disabled
Enabled
7.11.5 Digital Soft Ramp
Configures an incremental volume ramp from the current level to the new level at the specified rate.
DIGSFT
0
1
Ramp Rate:
Volume Changes
Affected Digital Volume Controls
Does not occur with a soft ramp MSTxMUTE (“Master Playback Mute” on page 43),
HPxMUTE, SPKxMUTE (“Playback Control 2 (Address 0Fh)” on page 45),
PCMxMUTE, PCMxVOL[7:0] (“PCM Channel x Volume” on page 47),
Occurs with a soft ramp
MSTxVOL[7:0] (“Master Volume Control” on page 51),
HPxVOL[7:0] (“Headphone Volume Control” on page 51),
SPKxVOL[7:0] (“Speaker Volume Control” on page 52),
1/8 dB every LRCK cycle
44
DS792F2