Altera cyclone V Technical Reference page 767

cv_5v4
2016.10.28
Name
waitrequest
burstcount
The read and write interfaces are configured to the same size. The byte-enable size scales with the data bus
size.
Related Information
Avalon Interface Specifications
Information about the Avalon-MM protocol
Avalon-MM Write-Only Port
The Avalon-MM write-only ports are standard Avalon-MM ports used to dispatch write operations. Each
configured Avalon-MM write port consists of the signals listed in the following table.
Table 11-16: Avalon-MM Write-Only Port Signals
Name
reset
clk
write
address
writedata
byteenable
waitrequest
burstcount
SDRAM Controller Subsystem
Send Feedback
Bit Width Input/Output
1
11
Bits
1
1
1
32
32, 64, 128, or 256
4, 8, 16, 32
1
11
Direction
Out Indicates need for additional cycles to
complete a transaction
In Transaction burst length. The value of the
maximum
burstcount
power of 2.
Direction
In Reset
In Clock
In Indicates write transaction
In Address of the transaction
In Write data for a transaction
In Byte enables for each write byte
Out Indicates need for additional cycles to
complete a transaction
In Transaction burst length
Avalon-MM Write-Only Port
Function
parameter must be a
Function
Altera Corporation
11-29