CDB42L55 Cirrus Logic Inc, CDB42L55 Datasheet - Page 62

• Manufacturer Part Number: CDB42L55
• Description: Eval Bd Ultra Low Power Stereo Codec
• Manufacturer: Cirrus Logic Inc

Specifications of CDB42L55

• Main Purpose: Audio, CODEC
• Embedded: Yes, FPGA / CPLD
• Utilized Ic / Part: CS42L55
• Primary Attributes: 2 Stereo Analog Inputs, Stereo Line and Headphone Outputs, S/PDIF Transmitter and Receiver
• Secondary Attributes: GUI, USB, RS232, I2C Interfaces, USB or External or Battery Power Supply
• Product: Audio Modules
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 598-1506; CDB-42L55

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