psb21391 Infineon Technologies Corporation, psb21391 Datasheet - Page 148

• Manufacturer Part Number: psb21391
• Description: Siemens Codec With Upn Transceiver
• Manufacturer: Infineon Technologies Corporation

Data Sheet
Description of the programmable parameters:
Parameter # of CRAM
LGAR
COMR
AAR
AGIR
AGR
TMLR
TMHR
NOISR
4.4.6
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
COP_A
COP_A
COP_A
COP_A
COP_A
COP_A
COP_A
COP_A
COP_B
COP_B
COP_B
COP_B
COP_B
COP_B
COP_B
COP_B
Speakerphone Coefficient Set
Bytes
1
1
1
1
1
1
1
1
Coefficient
GAE
GLE
ATT
ETAE
ETLE
TW
DS
SW
GDSAE
PDSAE
GDNAE
PDNAE
GDSLE
PDSLE
GDNLE
PDNLE
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
138
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
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
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
PSB 21391
PSB 21393
2001-03-07
Codec