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
6.26
NG_ALL
7
Noise Gate Configuration & Misc. (Address 1Fh)
Noise Gate Channel Gang (NG_ALL)
Default: 0
0 - Disabled
1 - Enabled
Function:
Gangs the noise gate function for channel A and B. When enabled, both channels must fall below the thresh-
old setting for the noise gate attenuation to take effect.
Noise Gate Enable (NG_EN)
Default: 0
0 - Disabled
1 - Enabled
Function:
Enables the noise gate. Maximum attenuation is relative to all gain settings applied.
Noise Gate Boost (NG_BOOST) and Threshold (THRESH[3:0])
Default: 000
Function:
Sets the threshold level of the noise gate. Input signals below the threshold level will be attenuated to -96
dB. NG_BOOST = ‘1’b adds 30 dB to the threshold settings.
Noise Gate Delay Timing (NGDELAY[1:0])
Default: 00
00 - 50 ms
01 - 100 ms
10 - 150 ms
11 - 200 ms
Function:
Sets the delay time before the noise gate attacks. Noise gate attenuation is dictated by the SOFTx &
ZCROSS bit settings unless the disable bit for each function is enabled.
THRESH[2:0]
000
001
010
011
100
101
110
NG_EN
111
6
NG_BOOST
(NG_BOOST = ‘0’b)
Minimum Setting
5
Reserved
Reserved
-64 dB
-67 dB
-70 dB
-73 dB
-76 dB
-82 dB
THRESH2
4
(NG_BOOST = ‘1’b)
Minimum Setting
THRESH1
-34 dB
-37 dB
-40 dB
-43 dB
-46 dB
-52 dB
-58 dB
-64 dB
3
THRESH0
2
NGDELAY1
1
CS42L51
NGDELAY0
DS679A2
0