User guide

Spartan-6 FPGA Configuration User Guide www.xilinx.com 129
UG380 (v2.7) October 29, 2014
Verifying Readback Data
The RBA and RBB files contain expected readback data along with readback command
sets. They are intended for use with the MSK file, although they are better suited to
readback for Virtex® devices than for Spartan-6 devices (see XAPP138
, Virtex FPGA
Series Configuration and Readback).
X-Ref Target - Figure 6-5
Figure 6-5: Comparing Readback Data Using the MSK and BIT Files
Pad Frame
Frame Data
File Header
Frame Data
Mask
To t al
Number of
Device
Frames
1 Frame
Readback
Data Stream
UG380_c6_05_042909
MSK
File
Commands Commands
Commands Commands
Pad Frame Pad Frame
File Header
Frame Data
BIT
File