PXF4333 Datasheet, PDF (130/361 Pages) Infineon Technologies AG – ABM 3G ATM Buf fer Manager

ABM-3G
PXF 4333 V1.1
Interface Description
5.1.6 UTOPIA Cell Format (PHY side)
The following sections describe the cell format expected by the ABM-3G, depending on
the selected mapping mode. Transmitted cells have the same format.
The ABM-3G may modify the LCI field (VC-Merge function), depending on the
configuration. 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
130
2001-12-17