PXB4219E Datasheet, PDF (37/290 Pages) Infineon Technologies AG – Interworking Element for 8 E1/T1 Lines

IWE8, V3.4
PXB 4219E, PXB 4220E, PXB 4221E
Functional Description
3.2
Functional Block Diagram
External RAM
AAL Segmentation / AAL Reassembly Buffers
ATM Transmit / ATM Receive Buffers
Cell Insertion / Cell Extraction Buffers
Statistics Counters, Threshold Timers
CV
External
Clock
Recovery
Interface
ICRC
Internal
Clock
Recovery
Circuit
FR
x8 OR
RB
x8
RTS
Buffer
Framer
Receive
Interface
SL
x8
Octet
Receive
Processing
OQ
Output
Queue
Serial
Loop
FT
x8 OT
Framer
Transmit
Interface
Octet
Transmit
Processing
CK
EQ
OM
Clock &
Reset
Event
Queue
OAM
Processing
RM
External
RAM
Interface
JT
JTAG
Interface
CR
UR
Cell Receive
Processing /
AAL
Segmentation
IE
Cell Insertion
Cell Extraction
CT
UT
Cell Transmit
Processing /
AAL
Reassembly
MP IQ
Micro-
processor
Interface
Interrupt
Queue
Figure 6 Block Diagram
To Microprocessor
Ibd2
Data Sheet
37
2003-01-20