
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
011
111
0001
011
111
0010
011
111
0011
011
111
0100
011
111
0101
011
111
0110
011
111
0111
021
121
1000
011
111
1001
021
121
1010
021
121
1011
021
142
1100
084
1168
1101
02412
13216
1110
04020
14824
1111
05628
16432
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