PEF 20954 HT V1.1 Infineon Technologies, PEF 20954 HT V1.1 Datasheet - Page 12

• 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

SIDEC
Smart Integrated Digital Echo Canceller
Version 1.1
1.1
• 2.048 MHz PCM input and output interfaces with
• Rapid convergence of patented algorithm at the
• Echo return loss enhancement of > 30 dB (ERLE)
• Detection of double talk for adaptive convergence
• Independently controlled voiceband echo cancelling
• Smart Non Linear Processor controlled by echoloss, echo path delay and background
• Various options for comfort noise injection
• Maskable disabling functions
Type
PEF/PEB 20954 HT
PEF/PEB 20954 E
Data Sheet
selectable
G.711
beginning or during a connection even in the presence
of background noise at the near end subscriber
control
according to ITU G.165 and G.168 for
– 32 channels with end echo path delay of less than
– 16 channels with end echo path delay of less than
noise
– 2100 Hz tone with phase reversal detection
– 2100 Hz tone without phase reversal detection
– 2010 Hz continuity check (SS7)
– via PCM timeslot 16 Bit a, b, c or d according to ITU G.704
– individual channels maskable via Microprocessor Interface, UCC Interface and
63.75 ms
127.75 ms (usage of two SIDEC in parallel for
simultaneous processing of 32 channels is easily
possible)
Serial Interface
Key Features
- and A-Law coding according to ITU
12
Package
P-TQFP-144-8
P-LFBGA-160-2
P-LFBGA-160-2
P-TQFP-144-6, -8, -14
PEF/PEB 20954 HT
2004-07-28