Altera Cyclone V - TLP Packet Format Without Data Payload

November 2011 Altera Corporation Cyclone V Hard IP for PCI Express
A. Transaction Layer Packet (TLP) Header
Formats
TLP Packet Format without Data Payload
Table A–1 through A–2 show the header format for TLPs without a data payload.
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Table A–1. Memory Read Request, 32-Bit Addressing
+0 +1 +2 +3
76543210765432107 6 5 4 321076543210
Byte 0 000000000
TC 0000 TD EP Attr 00 Length
Byte 4 Requester ID Tag Last BE First BE
Byte 8 Address[31:2] 00
Byte 12 Reserved
Table A–2. Memory Read Request, Locked 32-Bit Addressing
+0 +1 +2 +3
76543210765432107 6 54321076543210
Byte 0 000000010TC 0000TD EP Attr 00Length
Byte 4
Requester ID Tag Last BE First BE
Byte 8 Address[31:2] 00
Byte 12
Reserved
Table A–3. Memory Read Request, 64-Bit Addressing
+0 +1 +2 +3
76543210765432107 6 54321076543210
Byte 0 001000000
TC 0000 TD EP
Att
r
00 Length
Byte 4 Requester ID Tag Last BE First BE
Byte 8 Address[63:32]
Byte 12 Address[31:2] 00
Table A–4. Memory Read Request, Locked 64-Bit Addressing
+0 +1 +2 +3
76543210765432107 6 54321076543210
Byte 0 001000010
TC 0000 TEP
Att
r
00 Length
Byte 4 Requester ID Tag Last BE First BE
Byte 8 Address[63:32]
Byte 12 Address[31:2] 00
November 2011
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