pxb4219 Infineon Technologies Corporation, pxb4219 Datasheet - Page 85
pxb4219
Manufacturer Part Number
pxb4219
Description
Iwe8 Interworking Element For 8 E1/t1 Lines
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PXB4219.pdf
(290 pages)
- Current page: 85 of 290
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PXB4219 / PXB4220 / PXB4221
Operational Description
4.9
Cell Insertion
This block allows the insertion of predefined cells stored in the Cell Insertion Buffer into
the UTOPIA receive cell stream.
The Cell Insertion Buffer, located in external RAM, offers space for one ATM cell. The
ATM cell except of the UDF octet needs to be written to the Cell Insertion Buffer via the
Microprocessor interface. When transferring the cell to the UTOPIA receive interface an
UDF of 00
will be inserted.
H
Cell insertion is activated by setting the bit “insert_cell” in the Command Register (“cmd”,
see
Chapter
7.31) the cell is then read from the Cell Insertion Buffer and forwarded to
the UTOPIA Receive Interface.
The port number is generated randomly. Depending on the UTOPIA mode selection, it
will be mapped either on the UTOPIA address bus or in the ATM header
(“mapping_mode” = 2, 3, 4 or 5 in register “utconf”) overwriting the predefined values.
Data Sheet
85
2002-05-06
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