Cirrus Logic CS6422 - Manual (Page 17)

CS6422
17
3.4 Register 1
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
THDet Taps TVol RSD NCC AuNECD 0 0 1 0
00 10 1010 0 00 0
2 A 0 2
Bits Name Function Word Operation
15-14 THDet Tx Half-duplex Detection
threshold
00*
01
10
11
6 dB
9 dB
12 dB
reserved
13-12 Taps AEC/NEC Tap allocation 00
01
10*
11
444/64 (55.5 ms/8 ms)
380/128 (47.5 ms/16 ms)
316/192 (39.5 ms/24 ms)
252/256 (31.5 ms/32 ms)
11-8 TVol Tx Volume control 0000
0001
---
0100
---
1010*
1011
---
1101
1110
1111
+30 dB
+27 dB
---
+18 dB
---
+0 dB
-3 dB
---
-9 dB
-12 dB
mute
7 RSD Rx Suppression Disable 0*
1
enable Rx suppression
disable Rx suppression
6-5 NCC NEC Coefficient Control 00*
01
10
11
Normal
Clear
Freeze
reserved
4 AuNECD Auto re-engage NEC Disable 0*
1
enable Auto NEC
disable Auto NEC
* Denotes reset value
Table 4. Register 1 Bit Definitions
CS6422
DS295F1 17