CDB42L51 Cirrus Logic Inc, CDB42L51 Datasheet - Page 70
CDB42L51
Manufacturer Part Number
CDB42L51
Description
BOARD EVAL FOR CS42L51 CODEC
Manufacturer
Cirrus Logic Inc
Specifications of CDB42L51
Main Purpose
Audio, CODEC
Embedded
Yes, Other
Utilized Ic / Part
CS42L51, CS8406, CS8415
Primary Attributes
Stereo, Digital Audio Transmitter and Receiver
Secondary Attributes
Graphic User Interface, S/PDIF Interface
Description/function
Audio CODECs
Operating Supply Voltage
5 V
Product
Audio Modules
For Use With/related Products
CS42L51
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
Other names
598-1005
70
6.22
Note: The DATA_SEL[1:0] bits in reg09h must be set to ‘01’b to enable function control in this register.
6.23
ALC_ENB
Reserved
7
7
Limiter Attack Rate Register (Address 1Bh)
Limiter Attack Rate (ARATE[5:0])
Default: 000000
Function:
Sets the rate at which the limiter attenuates the analog output from levels above the maximum setting in the
limiter threshold register.
The limiter attack rate is user-selectable but is also a function of the sampling frequency, Fs, and the
DAC_SZC setting unless the disable bit is enabled.
ALC Enable & Attack Rate (Address 1Ch)
ALC Enable (ALC_ENX)
Default: 0
0 - Disabled
1 - Enabled
Function:
Enables automatic level control for ADC channel x.
Note:
ALC Attack Rate (ARATE[5:0])
Default: 000000
Function:
Sets the rate at which the ALC attenuates the analog input from levels above the maximum setting in the
ALC threshold register.
The limiter attack rate is user-selectable but is also a function of the sampling frequency, Fs, and the SOFTx
& ZCROSSx bit settings unless the disable bit for each function is enabled.
Binary Code
Binary Code
000000
000000
111111
111111
ALC_ENA
When the ALC is enabled, the Attenuator and PGA volume is automatically controlled and should
not be adjusted manually.
Reserved
···
···
6
6
ALC_ARATE5 ALC_ARATE4 ALC_ARATE3 ALC_ARATE2 ALC_ARATE1 ALC_ARATE0
ARATE5
5
5
Slowest Attack
Slowest Attack
Attack Time
Fastest Attack
Attack Time
Fastest Attack
···
···
ARATE4
4
4
ARATE3
3
3
ARATE2
2
2
ARATE1
1
1
CS42L51
ARATE0
DS679F1
0
0