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PXB4219 Datasheet, PDF (44/290 Pages) Infineon Technologies AG – IWE8 Interworking Element for 8 E1/T1 Lines | |||
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PXB4219 / PXB4220 / PXB4221
Functional Description
Table 11
Block
CV
RB
CK
JT
ICRC
External
RAM
Functions of IWE8 Blocks
Functions
External Clock Recovery interface
⢠Generation of serial communication frames to external clock recovery
circuit, containing RTS values and or ACM buffer filling
⢠Generation of synchronization for RTS generation by external clock
recovery circuit.
⢠Reception of frames with RTS values from external clock recovery
circuit
RTS Buffer
⢠Buffer for 2 incoming RTS values per port
Clock & Reset
⢠Clock distribution
⢠Reset control
JTAG interface
⢠Boundary Scan register
⢠TAP controller
Internal Clock Recovery Circuit
⢠Synchronous Residual Time Stamp SRTS
⢠Adaptive Clock Method ACM
ATM Transmit Buffer
⢠Compensate packetization delay on the PDH interface.
⢠Maximum size of 256 ATM cells per port.
⢠Maximum size of 64 octets per ATM cell.
ATM Receive Buffer
⢠Maximum size of 16 ATM cells per port.
⢠Maximum size of 64 octets per ATM cell.
Segmentation Buffer
⢠Compensate segmentation delay in the ATM network.
⢠1024 bytes per port (unstructured CES)
⢠256 bytes per timeslot (structured CES)
Reassembly Buffer
⢠Compensate the Cell Delay Variation (CDV) of the ATM network.
⢠512 bytes per timeslot. (structured CES)
Data Sheet
44
2002-05-06
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