PXF4333 Datasheet, PDF (302/361 Pages) Infineon Technologies AG – ABM 3G ATM Buf fer Manager

BUFER4
ABM-3G
PXF 4333 V1.1
Register Description
Unexpected Buffer Error number 4. Should never occur in normal
operation. Immediate reset of the chip is recommended.
For consistency check the ABM-3G stores the queue ID with each
cell written to the respective queue within the cell storage RAM.
When reading a cell from the cell storage RAM, the queue ID is
compared to the stored queue ID.
A queue ID mismatch would indicate a global buffering/pointer
problem.
Note: Several mechanisms are implemented in the ABM-3G to check for consistency
of pointer operation and internal/external memory control. The interrupt events
BUFER1..BUFER4 indicate errors detected by these mechanisms.
It is recommended that these interrupts be classified as “fatal device errors.”
Data Sheet
302
2001-12-17