Altera Cyclone V Device Handbook page 618

8-18
Avalon-MM Write Port
Table 8-8: Avalon-MM Bidirectional Port Signals
Name
clk
read
write
address
readdata
readdatavalid
writedata
byteenable
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 Port
The Avalon-MM write ports are standard Avalon-MM ports used only to dispatch write operations. Each
configured Avalon-MM write port consists of the signals listed in the following table.
Altera Corporation
Bits
1
1
1
32
32, 64, 128, or 256
1
32, 64, 128, or 256
4 (32-bit data), 8(64-bit
data), 16(128-bit data),
32(256-bit data)
1
11
Direction
In Clock for the Avalon-MM interface
In Indicates read transaction
In Indicates write transaction
In Address of the transaction
Out Read data return
Out Valid cycle flag for read data return
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
cv_54008
2013.12.30
Function
SDRAM Controller Subsystem
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