Altera Arria 10 Avalon-MM DMA User Manual
Page 26
Parameter
Value
Description
Enable control register
access (CRA) Avalon-MM
slave port
On/Off
Allows read and write access to bridge registers from the
interconnect fabric using a specialized slave port. This
option is required for Requester/Completer variants
and optional for Completer Only variants. Enabling
this option allows read and write access to bridge
registers, except in the Completer-Only single dword
variations.
Export MSI/MSI-X
conduit interfaces
On/Off
When you turn this option on, the core exports
top-level MSI and MSI-X interfaces that you can use to
implement a Custom Interrupt Handler for MSI and
MSI-X interrupts. For more information about the
Custom Interrupt Handler, refer to Interrupts for End
Points Using the Avalon-MM Interface with Multiple
MSI/MSI
-
X Support. If you turn this option Off, the
core handles interrupts internally.
If you select this option, you must design your own
external descriptor controller. The embedded controller
does not support MSI-X.
Enable PCIe interrupt at
power-on
On/Off
When you turn this option on, the Avalon-MM Arria 10
Hard IP for PCI Express enables the interrupt register at
power-up. Turning off this option disables the interrupt
register at power-up. The setting does not affect run-
time configuration of the interrupt enable register.
For the Avalon-MM interface with DMA, this value
must be off.
Enable Hard IP Status
Bus when using the
AVMM interface
On/Off
When you turn this option on, your top-level variant
includes the following top-level signals:
• Link status signals
• ECC error signals
• TX and RX parity error signals
• Completion header and data signals, indicating the
total number of Completion TLPs currently stored in
the RX buffer.
Instantiate internal
descriptor controller
On/Off
When you turn this option on, the descriptor controller
is included in the Avalon-MM bridge. When you turn
this option off, the descriptor controller should be
included as a separate external component. Turn this
option on, if you plan to use the Altera-provided
descriptor controller in your design. Turn this option
off if you plan to modify or replace the descriptor
controller logic in your design.
3-6
Interface System Settings
UG-01145_avmm_dma
2015.05.14
Altera Corporation
Parameter Settings