PXF4336 Datasheet, PDF (157/425 Pages) Infineon Technologies AG – ABM Premium ATM Buf fer Manager

ABM-P
PXF 4336 V1.1
Operational Description
•
RXDAT0
RXDAT1
RXDAT0
RXDAT1
OV=00_B
n
CPCS-
UU
CPI
Status
-
-
-
-
OV=01_B
RXDAT0
RXDAT1
RXDAT0
n -1
n
CPCS-
UU
CPI
Status
-
RXDAT1
-
-
OV=10_B
RXDAT0
n -2 n -1
RXDAT1
RXDAT0
n
CPCS-
UU
CPI
Status
RXDAT1
-
-
OV=11_B
RXDAT0
n -3 n -2
RXDAT1
RXDAT0
RXDAT1
n -1
n
CPCS-
UU
CPI
Status
-
PE=1
OV=invalid
PE=1
OV=valid
Figure 4-12 AAL5 Extraction: End of packet, Trailer and Status Byte
The Status Byte returns some information about the received packet:
Bit
7
6
5
4
3
2
1
unused
END ICHN CLP CGST UUE
0
CPIE
Table 4-13 AAL5 Status Byte
Flag
END
ICHN
CLP
CGST
UUE
CPIE
Description
Error bit. Set if a cell with a different header is received before the end of a
packet. Should not occur if VC merge is used, but the user might have a
programming error.
Invalid channel number. Indicates a change of the cell header before end
of packet.
CLP=1 in at least one cell of the packet
Congestion occurred, i.e. PT(1)=1 in at least one cell of the packet
CPCS-UU value is not 0; no other action
CPI value is not 0; no other action
Data Sheet
157
2001-12-17