PXB4219 Datasheet, PDF (139/290 Pages) Infineon Technologies AG – IWE8 Interworking Element for 8 E1/T1 Lines

PXB4219 / PXB4220 / PXB4221
Memory Structure
Table 31 Statistics Counters for AAL Ports¹⁾ (cont’d)
4
Number of cells causing a Reassembly Buffer overflow (AAL0 & AAL1).
It includes accepted cells that are causing the filling level to exceed the
predifined threshold and discarded cells due to the attempt of writing to
the Reassembly Buffer when the threshold is already exceeded.
5
Number of end of Reassembly Buffer overflow (AAL0 & AAL1). The
value is incremented upon acceptance of the next cell after Reassembly
Buffer overflow.
6
The count of the number of AAL1 header errors detected including those
corrected. Header errors include correctable and uncorrectable CRC,
plus bad parity. (atmfCESHdrErrors)
7
Number of times that the sequence number of an incoming AAL1 SAR-
PDU causes a transition of the SC algorithm from "sync" to "out of
sequence" and from "invalid" to "out of sync"
8
Number of downstream “misinserted cells” detected by the AAL1
sequence count algorithm (atmfCESMisinsertedCells)
9
Number of downstream cells discarded by the AAL1 sequence count
algorithm
10
Number of rejected AAL1 SDT pointers due to parity error or wrong
pointer value (93 < pointer <127)
11
Number of SC cycles with more than one AAL1 SDT pointer field if only
one pointer is expected (sdt_once = 1)
12
13 ³⁾
Number of start of reassembly buffer underflow (AAL0 & AAL1)
(atmfCESBufUnderflow)
Number of inserted starvation cells (AAL0 & AAL1) due to reassembly
buffer underflow
14
Number of times the Reassembly Buffer is re-initialized due to AAL1
start of structure is out of sync with port start of structure (see
Chapter 4.4.1.11)
This records the count of the number of events in which the AAL1
reassembler found that an SDT pointer is not where it is expected, and
the pointer must be reacquired. This count is only meaningful for
structured CES. (atmfCESPointerReframes)
15
Number of downstream “lost cells” detected by the AAL1 sequence
count algorithm (atmfCESLostCells)
1) _{For AAL ports with unstructured CES, the counters are located in channel_nr = 00000B}
2) _{Counter_nr 0 is common for all ports and is located in port_nr = 111B channel_nr = 11111B}
Data Sheet
139
2002-05-06