Xilinx Virtex-4 Configuration User Manual page 112

Chapter 8: Readback and Configuration Verification
112
After sending readback commands to the device, comparison begins by aligning the
beginning of the readback frame data to the beginning of the FDRI write in the .bit
and .msk files. The comparison ends when the end of the FDRI write is reached.
This approach requires the least in-system storage space, because only the .bit, .msk,
and readback commands must be stored.
Readback
Data Stream
Pad Frame
1 frame
Total
number
Frame Data
device
frames
Figure 8-6: Comparing Readback Data Using the .msk and .bit Files
The .rba and .rbb files contain expected readback data along with readback
command sets. They are intended for use with the .msk file.
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File
File
File Header File Header
Commands Commands
Frame Data Frame Data
Mask
Pad Frame Pad Frame
Commands Commands
UG071_53_073007
Virtex-4 FPGA Configuration User Guide
UG071 (v1.12) June 2, 2017
R