CDB42L55 Cirrus Logic Inc, CDB42L55 Datasheet - Page 63

• 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

DS773F1
6.29.2 ALC Attack Rate
6.30
6.30.1 ALC Release Rate
Reserved
7
ALC Release Rate (Address 25h)
Sets the rate at which the ALC applies analog and/or digital attenuation from levels above the AMAX[2:0]
threshold
Note:
ANLGZCx
unless the respective disable bit
page
Sets the rate at which the ALC releases the analog and/or digital attenuation from levels below the
MIN[2:0] threshold
VOL[5:0]
Notes:
1. The ALC release rate is user-selectable but is also a function of the sampling frequency, Fs, and the
2. The Release Rate setting must always be slower than the Attack Rate.
ALCARATE[5:0]
00 0000
···
11 1111
Application:
ALCRRATE[5:0]
00 0000
···
11 1111
Application:
DIGSFT
65) is enabled.
Reserved
The ALC attack rate is user-selectable but is also a function of the sampling frequency, Fs, the
(“PGAx Volume” on page
(“ALC Maximum Threshold” on page
6
(“Analog Zero Cross” on page
(“Digital Soft Ramp” on page
Attack Time
Fastest Attack
···
Slowest Attack
Release Time
Fastest Release
···
Slowest Release
“Automatic Level Control (ALC)” on page 24
“Automatic Level Control (ALC)” on page 24
(“Limiter Cushion Threshold” on page
ALCRRATE5
5
(“ALCx Soft Ramp Disable” on page 65
ALCRRATE4
49) and ADCxVOL[7:0]
4
46) and the DIGSFT
46) and ANLGZCx
64).
ALCRRATE3
3
61) and returns the signal level to the PGAx-
(“ADCx Volume” on page
(“Analog Zero Cross” on page
ALCRRATE2
(“Digital Soft Ramp” on page
2
or
“ALCx Zero Cross Disable” on
ALCRRATE1
1
50) setting.
CS42L55
ALCRRATE0
46) setting.
46) setting
0
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