Specifications

Numbers of MPFE Ports Per Device
Table 6-14: Numbers of MPFE Command, Write-Data, and Read-Data Ports for Each Cyclone V Device
MPFE Ports
Member CodeVariant
Read-dataWrite-dataCommand
224A2
Cyclone V E
224A4
446A5
446A7
446A9
224C3
Cyclone V GX
446C4
446C5
446C7
446C9
446D5
Cyclone V GT 446D7
446D9
Bonding Support
You can bond two hard memory controllers to support wider data widths. When you bond two hard memory
controllers, the data going out of the controllers to the user logic is synchronized. However, the data going
out of the controllers to the memory is not synchronized.
The bonding controllers are not synchronized and remain independent with two separate address buses and
two independent command buses. These buses are calibrated separately.
If you require ECC support for a bonded interface, you must implement the ECC logic external to the hard
memory controllers.
A memory interface that uses the bonding feature has higher average latency. Bonding through the
core fabric will also cause a higher latency.
Note:
External Memory Interfaces in Cyclone V Devices
Altera Corporation
Send Feedback
CV-52006
Numbers of MPFE Ports Per Device
6-32
2013.05.06