Visible to Intel only — GUID: fje1696476803743
Ixiasoft
Visible to Intel only — GUID: fje1696476803743
Ixiasoft
4.8.2. Prefix Format
The Prefix and Prefix Type fields carry the prefix information of the current TLP. The Prefix Present field indicates presence of prefix information. The Prefix Present field '0' indicates current TLP has no prefix associated with it. Altera recommends to drive zero on Prefix and Prefix Type fields when Prefix Present is equal to '0'.
The following figure shows PCIe* Prefix TLP Format.
The following table shows the mapping of PCIe* TLP Prefix shown in the figure above on to the Tdata bus.
PCIe* TLP Prefix Bytes | AXI-Stream Tdata Header Byte Index |
---|---|
Prefix - Byte 3 | Byte 16 |
Prefix - Byte 2 | Byte 17 |
Prefix - Byte 1 | Byte 18 |
Prefix Type - Byte 0 [Bits 4:0] | Byte 19 [Bits 4:0] |