Altera RapidIO MegaCore Function - Manual (Page 83)

Chapter 4: Functional Description 4–37
Logical Layer Modules
August 2014 Altera Corporation RapidIO MegaCore Function
User Guide
For information about the burst count values determined in the conversion process
for read transactions, refer to
Table 4–7 . For information about the burst count and
byteenable values determined in the conversion process for 32-bit datapath write
transactions, by RapidIO IP core 1x variations, refer to
Table 4–8 . For information
about the burst count and byteenable values determined in the conversion process for
64-bit datapath write transactions, by RapidIO IP core 2x and 4x variations, refer to
Table 4–9 .
Table 4–7. Avalon-MM I/O Master Read Transaction Burstcount (32-bit or 64-bit datapath)
RapidIO Values Avalon-MM Burstcount Value
rdsize
(4'bxxxx)
wdptr
(1'bx)
in 32-Bit Datapath In 64-Bit Datapath
0000
0 1 1
1 1 1
0001
0 1 1
1 1 1
0010
0 1 1
1 1 1
0011
0 1 1
1 1 1
0100
0 1 1
1 1 1
0101
0 1 1
1 1 1
0110
0 1 1
1 1 1
0111
0 2 1
1 2 1
1000
0 1 1
1 1 1
1001
0 2 1
1 2 1
1010
0 2 1
1 2 1
1011
0 2 1
1 4 2
1100
0 8 4
1 16 8
1101
0 24 12
1 32 16
1110
0 40 20
1 48 24
1111
0 56 28
1 64 32