Altera Cyclone V - Page 132

A–2 Chapter A: Transaction Layer Packet (TLP) Header Formats
TLP Packet Format without Data Payload
Cyclone V Hard IP for PCI Express November 2011 Altera Corporation
Table A–5. Configuration Read Request Root Port (Type 1)
+0 +1 +2 +3
76543210765432107 6 54321076543210
Byte 0 0000010100000000
TD EP 00000000000001
Byte 4
Requester ID Tag 0000 First BE
Byte 8 Bus Number Device No Func 0000 Ext Reg Register No 00
Byte 12 Reserved
Table A–6. I/O Read Request
+0 +1 +2 +3
76543210765432107 6 54321076543210
Byte 0 0000001000000000
TD EP 00000000000001
Byte 4
Requester ID Tag 0000 First BE
Byte 8 Address[31:2] 00
Byte 12 Reserved
Table A–7. Message without Data
+0 +1 +2 +3
765432 1 0 765432107 6 54321076543210
Byte 0 00110
r
2
r
1
r
0
0
TC 0000 TD EP 00000000000000
Byte 4
Requester ID Tag Message Code
Byte 8 Vendor defined or all zeros
Byte 12
Vendor defined or all zeros
Notes to Table A–7:
(1) Not supported in Avalon-MM.
Table A–8. Completion without Data
+0 +1 +2 +3
76543210765432107 6 54 3210 765 4 3 2 1 0
Byte 0 000010100
TC 0000 TD EP
Att
r
00 Length
Byte 4 Completer ID Status B Byte Count
Byte 8 Requester ID Tag 0 Lower Address
Byte 12 Reserved
Table A–9. Completion Locked without Data
+0 +1 +2 +3
76543210765432107 6 5 4 3 210 765 43210
Byte 0 000010110
TC 0000 TD EP
Att
r
00 Length
Byte 4 Completer ID Status B Byte Count