Cirrus Logic CS42L55 - Manual (Page 62)

62 DS773F1
CS42L55
6.27.3 Limiter Release Rate
Sets the rate at which the limiter releases the digital attenuation from levels below the CUSH[2:0] thresh-
old (
“Limiter Cushion Threshold” on page 61 ) and returns the analog output level to the MSTxVOL[7:0]
( “Master Volume Control” on page 57 ) setting.
Note: The limiter release rate is user-selectable but is also a function of the sampling frequency, Fs,
and the DIGSFT ( “Digital Soft Ramp” on page 46 ) setting unless the disable bit ( “Limiter Soft Ramp Dis-
able” on page 66 ) is enabled.
6.28 Limiter Attack Rate (Address 23h)
6.28.1 Limiter Attack Rate
Sets the rate at which the limiter applies digital attenuation from levels above the MAX[2:0] threshold
(
“Limiter Maximum Threshold” on page 60 ).
Note: The limiter attack rate is user-selectable but is also a function of the sampling frequency, Fs, and
the DIGSFT ( “Digital Soft Ramp” on page 46 ) setting unless the disable bit ( “Limiter Soft Ramp Disable”
on page 66 ) is enabled.
6.29 ALC Enable & Attack Rate (Address 24h)
6.29.1 ALCx
Configures the automatic level controller (ALC).
LIMRRATE[5:0] Release Time
00 0000 Fastest Release
··· ···
11 1111 Slowest Release
Application: “Limiter” on page 32
7 6 5 4 3 2 1 0
Reserved Reserved LIMARATE5 LIMARATE4 LIMARATE3 LIMARATE2 LIMARATE1 LIMARATE0
LIMARATE[5:0] Attack Time
00 0000 Fastest Attack
··· ···
11 1111 Slowest Attack
Application: “Limiter” on page 32
7 6 5 4 3 2 1 0
ALCB ALCA ALCARATE5 AALCRATE4 ALCARATE3 ALCARATE2 ALCARATE1 ALCARATE0
ALC ALC Status
0 Disabled
1 Enabled
Application: “Automatic Level Control (ALC)” on page 24