PXF4336 Datasheet, PDF (165/425 Pages) Infineon Technologies AG – ABM Premium ATM Buf fer Manager

ABM-P
PXF 4336 V1.1
Interface Description
5.1.6 UTOPIA Cell Format (PHY side)
The following sections describe the cell format expected by the ABM-P, depending on
the selected mapping mode. Transmitted cells have the same format.
The ABM-P may modify user-cell field ‘EFCI’ and the LCI field (VC-Merge function),
depending on the configuration. In OAM cells, bits ‘CI’ and ‘NI’ as well as Function
Specific fields may be modified. For internal use, also field UDF2 may be modified. The
CRC10 field gets recalculated accordingly.
5.1.6.1 UTOPIA Level 2 Standard Cell Formats
Table 5-3 Standardized UTOPIA Level 2 Cell Format (16-bit)
bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0
VPI(11:0)
1
VCI(11:0)
2
UDF1
3
Payload Octet 1
4
Payload Octet 3
...
:
26
Payload Octet 47
VCI(15:12)
PT(2:0) ^CLP
UDF2
Payload Octet 2
Payload Octet 4
:
Payload Octet 48
Note: All Fields According to Standards, Unused Octets Shaded
Table 5-4 Standardized UTOPIA Level 2 Cell Format (16-bit): OAM Cells
bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0
VPI(11:0)
1
VCI(11:0)
2
UDF1
3
OAM Type(3:0) Function Type(3:0)
4
Function Specific Octet 2
...
:
25
Function Specific Octet 44
26
Reserved
VCI(15:12)
PT(2:0) ^CLP
UDF2
Function Specific Octet 1
Function Specific Octet 3
:
Function Specific Octet 45
CRC10
Note: All fields according to standards, unused octets are shaded.
Data Sheet
165
2001-12-17