Cirrus Logic CS42L73 - Manual (Page 107)

DS882F1 107
CS42L73
6.31 Limiter Attack Rate Headphone/Line Output (HL) (Address 26h)
6.31.1 Limiter Attack Rate HL
If limiter attack volume changes are configured to occur with a soft-ramp, this register sets the soft-ramp
rate by specifying the soft-ramp step period size.
6.32 Limiter Control, Release Rate Headphone/Line Output (HL) (Address 27h)
6.32.1 Peak Detect and Limiter HL
Configures the peak detect and limiter circuitry.
6.32.2 Peak Signal Limit All Channels HL
Sets how channels are attenuated when the limiter is enabled.
6.32.3 Limiter Release Rate HL
If limiter release volume changes are configured to occur with a soft-ramp, this register sets the soft-ramp
rate by specifying the soft-ramp step period size.
7 6 5 4 3 2 1 0
Reserved Reserved LIMARATEHL5 LIMARATEHL4 LIMARATEHL3 LIMARATEHL2 LIMARATEHL1 LIMARATEHL0
LIMARATEHL[5:0] Step Period Size
00 0000 1 (Fastest Attack)
··· ···
11 1111 1008 (Slowest Attack)
Formula: Step Period Size = MAXIMUM_OF(1, 16 x LIMARATEHL)
7 6 5 4 3 2 1 0
LIMITHL LIMIT_ALLHL LIMRRATEHL5 LIMRRATEHL4 LIMRRATEHL3 LIMRRATEHL2 LIMRRATEHL1 LIMRRATEHL0
LIMITHL Limiter Status
0 Disabled
1 Enabled
LIMIT_ALLHL Limiter action:
0 Apply the necessary attenuation on a specific channel only if the signal amplitudes on that specific channel
rise above LMAXHL.
Remove attenuation on a specific channel only if the signal amplitude on that channel falls below CUSHHL.
1 Apply the necessary attenuation on BOTH channels when the signal amplitude on any ONE channel exceeds
LMAXHL.
Remove attenuation on BOTH channels only if the signal amplitude on BOTH channels falls below CUSHHL.
LIMRRATEHL[5:0] Step Period Size
00 0000 1 (Fastest Release)
··· ···
11 1111 1008 (Slowest Release)
Formula: Step Period Size = MAXIMUM_OF(1, 16 x LIMRRATESHL)