PEF 20954 HT V1.1 Infineon Technologies, PEF 20954 HT V1.1 Datasheet - Page 57

• 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 18
In multiple SIDEC mode the output SDECO of the clock master SIDEC is used to
synchronize clock slave SIDECs to the system clock. In this application multiple E1/T1
lines can be echo cancelled, one E1/T1 line per SIDEC. Leave the SDECI of the master
SIDEC open or connect it to ground V
4.2.1
The SIDEC requires the MSB (bit7) first and the LSB (bit0) last as input.
Data Sheet
PCM Signal Timing and Frame Alignment
Multiple SIDEC
V
DD
SCLKI
SI
RO
SDECI
SCLKI
RO
SI
SDECI
VCO
SIDEC
SIDEC
DD
master
slave
.
57
SDECO
SO
RI
SDECO
SO
RI
Operational Description
Multiple SIDEC Mode
Rev. 2, 2004-07-28
PEB 20954
PEF 20954