psb21391 Infineon Technologies Corporation, psb21391 Datasheet - Page 141

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

Description of the programmable parameters:
Parameter
GAE
GDSAE
PDSAE
GDNAE
PDNAE
ETAE
4.4.4.2
Principally, the SCLE works similarly to the SCAE. The formula of SCLE is the following:
Being in TX-mode, the speech comparator at the line side controls the switching to RX-
mode. When the SR-signal is higher than the SX-signal plus the expected/measured
echo return loss (VLE) and if SDR has detected speech, the comparator switches
immediately to RX-mode.
Data Sheet
Speech Comparator at the Line Side (SCLE)
# of CRAM
Bytes
1
1
1
1
1
1
Range
– 48 to + 48 dB
0 to 48 dB
0.16 to 42 ms/dB
0 to 48 dB
0.16 to 42 ms/dB
0 to 1020 ms
if
SR > SX + VLE then RX
else TX
131
Comment
Gain of Acoustic Echo
Reserve when speech is detected
Peak Decrement
when speech is detected
Reserve when noise is detected
Peak Decrement
when noise is detected
Echo time
PSB 21391
PSB 21393
2001-03-07
Codec