PEF 20954 HT V1.1 Infineon Technologies, PEF 20954 HT V1.1 Datasheet - Page 76

• Manufacturer Part Number: PEF 20954 HT V1.1
• Description: IC ECHO CANCELLER DGTL TQFP144
• Manufacturer: Infineon Technologies

Specifications of PEF 20954 HT V1.1

• Function: Smart Integrated Digital Echo Canceller (SIDEC)
• Interface: PCM, Serial, UCC
• Number Of Circuits: 1
• Voltage - Supply: 3 V ~ 3.6 V
• Current - Supply: 350mA
• Power (watts): 900mW
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 144-LFQFP
• Includes: Double Talk Detection
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: PEF20954HTV1.1; SP000007505

current signal is not considered to being a background noise and the background noise
level measurement will be switched off.
CONFSCU8. BNMAXRL behaves the same way for the RI signal and may be lowered
in order to reduce the effect of residual echo on the quality of the BN measurement.
Table 35
Register
CONFPCM 30H
Please see also the previous paragraph for details.
The above table shows what kind of signal can be configured to be inserted at SO in the
case of NLP activation.
Data Sheet
Addr. Value
Background noise insertion
NLPITU
NLPMOD
(if NLPITU
= '1')
Mod. Effect
1
0
1
0
ITU comfort noise (white noise, constant
amplitude)
subjective comfort noise (amplitude limited)
ITU bandlimited noise with constant
amplitude
output level is 0 (dead line)
76
Operational Description
Rev. 2, 2004-07-28
PEB 20954
PEF 20954