PEF 20550 H V2.1 Infineon Technologies, PEF 20550 H V2.1 Datasheet - Page 33

• Manufacturer Part Number: PEF 20550 H V2.1
• Description: IC INTERFACE CTRLR PCM MQFP80
• Manufacturer: Infineon Technologies
• Series: ELIC®r

Specifications of PEF 20550 H V2.1

• Function: Line Card Controller
• Interface: ISDN, PCM
• Number Of Circuits: 1
• Voltage - Supply: 5V
• Current - Supply: 15mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 80-SQFP
• Includes: Change Detection, Power-Up Reset Generation
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Other names: PEF20550HV2.1XT; PEF20550HV21XP; SP000007794; SP000007795

1.6.1.5 Central D-Channel Processing
In this application the EPIC-1 not only switches the B-channels and performs the C/I-
and monitor channel control function, but switches also the D-channel data onto the
system highway. In upstream direction the EPIC-1 can combine up to four 16-kbit/s D-
channels into one 64-kbit/s channel. In downstream direction it provides the capability to
distribute one 64-kbit/s channel in four 16-kbit/s channels.
Figure 14
Line Card Architecture for Completely Centralized D-Channel Processing
Semiconductor Group
IOM -2
Interface
P µ
R
SACCO CH-A
SACCO CH-B
ARBITER
EPIC
ELIC
B, D
R
R
ITS05815
33
B
PCM
Highway
Signaling Highway for
Line Card Control
Example Frame Structure
B
...
B
D D D D
PEB 20550
PEF 20550
Overview
B
01.96