A. transaction layer packet (tlp) header formats, Transaction layer packet (tlp) header formats – Altera Arria V Avalon-MM User Manual

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Transaction Layer Packet (TLP) Header Formats

A

2014.12.15

UG-01105_avmm

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The following figures show the header format for TLPs without a data payload.

Figure A-1: Memory Read Request, 32-Bit Addressing

Memory Read Request, 32-Bit Addressing

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 0 0 0

TC

0 0 0 0

TD

EP

Attr

0 0

Length

Byte 4

E

B

t

s

r

i

F

E

B

t

s

a

L

g

a

T

D

I

r

e

t

s

e

u

q

e

R

Byte 8

Address[31:2]

0

0

Byte 12

Reserved

Figure A-2: Memory Read Request, Locked 32-Bit Addressing

Memory Read Request, Locked 32-Bit Addressing

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 0 1 0 TC

0 0 0 0 TD

EP

Attr

0 0 Length

Byte 4

E

B

t

s

r

i

F

E

B

t

s

a

L

g

a

T

D

I

r

e

t

s

e

u

q

e

R

Byte 8

Address[31:2]

0 0

Byte 12

Reserved

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