Figure A-6: I/O Read Request
I/O Read Request
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 7 6 5 4 3 2 1 0
Byte 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0
TD EP
0 0 0 0 0 0 0 0 0 0 0 0 0 1
Byte 4
gaTDI retseuqeR
0 0 0 0
First BE
Byte 8
Address[31:2]
0 0
Byte 12 Reserved
Figure A-7: Message without Data
Message without Data
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 7 6 5 4 3 2 1 0
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
edoC egasseMgaTDI retseuqeR
Byte 8 Vendor defined or all zeros
Byte 12 Vendor defined or all zeros
Note:
(1) Not supported in Avalon-MM.
Figure A-8: Completion without Data
Completion without Data
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 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
tnuoC etyBBsutatSDI retelpmoC
Byte 8
gaTDI retseuqeR
0
Lower Address
Byte 12 Reserved
UG-01097_avmm
2014.12.15
Transaction Layer Packet (TLP) Header Formats
A-3
Transaction Layer Packet (TLP) Header Formats
Altera Corporation
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