XMC-6VLX
USER’S MANUAL
Acromag, Inc. Tel: 248-295-0310
- 53 - http://www.acromag.com
- 53 -
www.acromag.com
BAR2 MEMORY MAP
QDR Memory
16MB of QDR memory is provided on the XMC-6VLX board. The 16MB QDR
memory is provided as 2 Meg x 72-bits. The QDR memory connects directly
to the Virtex 6 FPGA using a 72-bits. This allow for fast data transfer to and
from this memory and the user application and the PCIe bus. This design
allows for the user to maximize data throughput between the Field I/O’s and
the controlling processor.
There is automatic DMA initiator available that will trigger upon a user set
condition. See AXI CDMA Registers for more information on DMA operation
to and from QDR memory.
QDR Memory (Read/Write) – (BAR2 + 0x0000000 to 0x00FFFFFF)
The QDR memory 16 Mega byte space is used to provide read or write
access to on board QDR memory. This memory space allows access to the
QDR directly from the Virtex 6 FPGA. The memory device has a 2 Meg x 72-
bits memory configuration. Reading or writing to this memory space using
DMA access is also possible as 64-bit transfers.
