Answers Database
Virtex Configuration: Configuring Multiple Virtex Devices in SelectMAP mode.
Record #5666
Problem Title:
Virtex Configuration: Configuring Multiple Virtex Devices in SelectMAP mode.
Problem Description:
Urgency: Standard
General Description: How can you configure multiple Virtex devices in SelectMAP mode and have all Virtex
devices become active at the same time?
Solution 1:
Connect the CCLK, Data, /WRITE, BUSY, DONE, and /INIT
pins in parallel. Each Virtex device is loaded separately by
asserting the /CS pin of each device.
The Host processor should follow these steps:
+ Set /WRITE LOW
+ Sequence A
1. Set /CS of one Virtex device LOW.
2. Send configuration Data.
3. At the end of the bitstream, deselect the
Virtex device by setting its /CS pin HIGH.
4. Repeat Sequence A for all other Virtex devices.
+ Disable Data Source.
+ Configuration Completed - Done will go HIGH when all devices
have released it.
The programming sequence for SelectMAP can be found in Flowchart
form in the Virtex Datasheet V1.2, (Figure 15, Page 3-20).
The Virtex datasheet can be downloaded at the following address:
http://support.xilinx.com/partinfo/ds003.pdf
End of Record #5666 - Last Modified: 01/27/00 17:20 |
