Altera IP Compiler for PCI Express - Manual (Page 315)

Chapter : A–3
TLP Packet Format with Data Payload
August 2014 Altera Corporation IP Compiler for PCI Express User Guide
TLP Packet Format with Data Payload
Table A–11 through A–5 show the content for transaction layer packets with a data
payload.
Byte 0 0 0 1 1 0
r
2 r
1 r
0
0 TC 0 0 0 0 TD EP 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Byte 4 Requestor ID Tag Message Code
Byte 8 Vendor defined or all zeros
Byte 12 Vendor defined or all zeros
Notes to Table A–8 :
(1) Not supported in Avalon-MM.
Table A–8. Message without Data
Table A–9. Completion without Data
+0 +1 +2 +3
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
Byte 0 0 0 0 0 1 0 1 0 0 TC 0 0 0 0 TD EP
Att
r
0 0 Length
Byte 4 Completer ID Status B Byte Count
Byte 8 Requestor ID Tag 0 Lower Address
Byte 12 Reserved
Table A–10. Completion Locked without Data
+0 +1 +2 +3
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
Byte 0 0 0 0 0 1 0 1 1 0 TC 0 0 0 0 TD EP
Att
r
0 0 Length
Byte 4 Completer ID Status B Byte Count
Byte 8 Requestor ID Tag 0 Lower Address
Byte 12 Reserved
Table A–11. Memory Write Request, 32-Bit Addressing
+0 +1 +2 +3
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
Byte 0 0 1 0 0 0 0 0 0 0 TC 0 0 0 0 TD EP
Att
r
0 0 Length
Byte 4 Requestor ID Tag Last BE First BE
Byte 8 Address[31:2] 0 0
Byte 12 Reserved
Table A–12. Memory Write Request, 64-Bit Addressing
+0 +1 +2 +3
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0