CS42L51-CNZR Cirrus Logic Inc, CS42L51-CNZR Datasheet - Page 70

• Manufacturer Part Number: CS42L51-CNZR
• Description: IC LV Stereo Codec F/Digital Audio Apps
• Manufacturer: Cirrus Logic Inc
• Type: Stereo Audior

Specifications of CS42L51-CNZR

• Data Interface: PCM Audio Interface
• Resolution (bits): 24 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: Yes
• Dynamic Range, Adcs / Dacs (db) Typ: 98 / 98
• Voltage - Supply, Analog: 1.8V, 2.5V
• Voltage - Supply, Digital: 1.8V, 2.5V
• Operating Temperature: -10°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 32-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 598-1005 - BOARD EVAL FOR CS42L51 CODEC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q3956082

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