Manual

44 DS792F2
CS43L22
Confidential Draft
3/4/10
7.11 Miscellaneous Controls (Address 0Eh)
7.11.1 Passthrough Analog
Configures an analog passthrough from the analog inputs to the headphone/line outputs.
7.11.2 Passthrough Mute
Configures an analog mute on the channel x analog in to analog out passthrough.
7.11.3 Freeze Registers
Configures a hold on all register settings.
7.11.4 HP/Speaker De-Emphasis
Configures a 15μs/50μs digital de-emphasis filter response on the headphone/line and speaker outputs.
7.11.5 Digital Soft Ramp
Configures an incremental volume ramp from the current level to the new level at the specified rate.
76543210
PASSTHRUB PASSTHRUA PASSBMUTE PASSAMUTE FREEZE DEEMPH DIGSFT DIGZC
PASSTHRUx Analog In Routed to HP/Line Output
0 Disabled
1 Enabled
PASSxMUTE Passthrough Mute
0 Disabled
1 Enabled
FREEZE Control Port Status
0 Register changes take effect immediately
1
Modifications may be made to all control port registers without the changes taking effect until after the
FREEZE is disabled.
DEEMPHASIS Control Port Status
0 Disabled
1 Enabled
DIGSFT Volume Changes Affected Digital Volume Controls
0 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),
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 Occurs with a soft ramp
Ramp Rate: 1/8 dB every LRCK cycle