Tlp Packet Format Without Data Payload - Altera Cyclone V User Manual

November 2011
1101

TLP Packet Format without Data Payload

Table A–1
Table A–1. Memory Read Request, 32-Bit Addressing
+0
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7
Byte 0 0 0 0 0 0 0 0 0 0
Byte 4
Requester ID
Byte 8
Byte 12
Table A–2. Memory Read Request, Locked 32-Bit Addressing
+0
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7
Byte 0 0 0 0 0 0 0 0 1 0 TC
Byte 4
Byte 8
Byte 12
Table A–3. Memory Read Request, 64-Bit Addressing
+0
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7
Byte 0 0 0 1 0 0 0 0 0 0
Byte 4
Byte 8
Byte 12
\
Table A–4. Memory Read Request, Locked 64-Bit Addressing
+0
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 7 6
Byte 0 0 0 1 0 0 0 0 1 0
Byte 4
Byte 8
Byte 12
November 2011 Altera Corporation
A. Transaction Layer Packet (TLP) Header
through A–2 show the header format for TLPs without a data payload.
+1
0 0 0 0 TD
TC
+1
0 0 0 0 TD EP Attr
Requester ID
Address[31:2]
+1
0 0 0 0 TD
TC
Requester ID
+1
0 0 0 0 T
TC
Requester ID
+2
6 5 4 3 2 1 0 7 6 5
0 0
EP Attr
Tag
Address[31:2]
Reserved
+2
6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
0 0 Length
Tag
Reserved
+2
6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
Att
0 0
EP
r
Tag
Address[63:32]
Address[31:2]
+2
5 4 3 2 1 0 7 6 5 4 3 2 1 0
Att
0 0
EP
r
Tag
Address[63:32]
Address[31:2]
Formats
+3
4 3 2 1 0
Length
Last BE First BE
0 0
+3
Last BE First BE
0 0
+3
Length
Last BE First BE
0 0
+3
Length
Last BE First BE
0 0
Cyclone V Hard IP for PCI Express