|
PXB4219E Datasheet, PDF (39/290 Pages) Infineon Technologies AG – Interworking Element for 8 E1/T1 Lines | |||
|
◁ |
IWE8, V3.4
PXB 4219E, PXB 4220E, PXB 4221E
Functional Description
Table 11
Block
UL
DL
UT
CT
Functions of IWE8 Blocks (contâd)
Functions
Upstream Loop
⢠Cell loopback from Cell Receive to Cell Transmit processing
⢠Loopback buffer for 4 cells
Downstream Loop
⢠Cell loopback from UTOPIA Transmit to UTOPIA Receive
⢠Loopback buffer for 4 cells
UTOPIA Transmit interface
⢠Cell level handshake
⢠Evaluation of framer port number from ATM header in UTOPIA level 1
mode and UTOPIA level 2 singel PHY mode
⢠Input buffer for 4 cells
Cell Transmit processing
Port and channel identification
ATM ports:
⢠Write cells to ATM transmit buffer
AAL ports:
⢠Port and channel identification
⢠SNP field check
⢠SN field check
⢠SDT pointer detection and verification
⢠RTS value extraction
⢠Extracting reassembly buffer filling for ACM
⢠CAS processing
⢠Statistics counter event generation
⢠Insertion of dummy cells at cell loss
⢠Write to Reassembly Buffer
Data Sheet
39
2003-01-20
|
▷ |