PEF 20954 HT V1.1 Infineon Technologies, PEF 20954 HT V1.1 Datasheet - Page 56

• 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

Figure 17
The pin connection of a 128 ms master and slave SIDEC is shown in
and RI is supplied to both SIDECs. The RO and SO is provided by the master. The
RO128 and SO128 signals are used to multiplex the 128 ms slave data into the PCM
data stream outputs of the master.
Data Sheet
128 ms Delay Mode
SCLKI
SI
RO
SDECI
SCLKI
SI
VCO
SIDEC
SIDEC
master
slave
56
SO
RI
SDECO
RI
Operational Description
128 ms Mode
Figure
Rev. 2, 2004-07-28
PEB 20954
PEF 20954
17. The SI