PSB21391 Datasheet, PDF (148/253 Pages) Infineon Technologies AG – Siemens Codec with UPNTransceiver

PSB 21391
PSB 21393
Codec
Description of the programmable parameters:
Parameter # of CRAM
Bytes
LGAR
1
COMR
1
AAR
1
AGIR
1
AGR
1
TMLR
1
TMHR
1
NOISR 1
Range
– 12 to 12 dB
0 to – 73 dB
0 to – 47 dB
18 to – 47 dB
0 to 18 dB
1 to 2700 ms/dB
1 to 340 ms/dB
0 to – 95 dB
Comment
Loudspeaker Gain Adjustment
Compare level re. to max. PCM-value
Attenuation range of Automatic control
Initial AGC attenuation/ gain receive
Gain range of Automatic control
Settling time constant for lower levels
Settling time constant for higher levels
Threshold for AGC-reduction
by background noise
4.4.6 Speakerphone Coefficient Set
Table 19 shows a possible configuration for a speakerphone application and can be
used as a basic programming set.
Table 19 Basic Coefficient Set
CMD Sequence Coefficient
COP_A
COP_A
COP_A
COP_A
COP_A
COP_A
COP_A
COP_A
GAE
GLE
ATT
ETAE
ETLE
TW
DS
SW
COP_B
COP_B
COP_B
COP_B
COP_B
COP_B
COP_B
COP_B
GDSAE
PDSAE
GDNAE
PDNAE
GDSLE
PDSLE
GDNLE
PDNLE
Code
0E_H
E5_H
48_H
0C_H
32_H
09_H
25_H
64_H
20_H
05_H
20_H
05_H
40_H
02_H
40_H
02_H
Value
5.3 dB
– 10.2 dB
28.2 dB
48.0 ms
200.0 ms
144.0 ms
99 ms/dB
0.6 ms/dB
6.0 dB
8.5 ms/dB
6.0 dB
8.5 ms/dB
12.0 dB
21.3 ms/dB
12.0 dB
21.3 ms/dB
Data Sheet
138
2001-03-07