coyoo 发表于 2015-11-19 16:10
用完了,可以从之前板子上卸下来,焊到出问题的板子上看看
Configuration Error Detection
When the Quartus II software generates the configuration bitstream, the software also computes a 16-bit
CRC value for each frame. A configuration bitstream can contain more than one CRC values depending
on the number of data frames in the bitstream. The length of the data frame varies for each device.
When a data frame is loaded into the FPGA during configuration, the precomputed CRC value shifts into
the CRC circuitry. At the same time, the CRC engine in the FPGA computes the CRC value for the data
frame and compares it against the precomputed CRC value. If both CRC values do not match, the
nSTATUS pin is set to low to indicate a configuration error.
You can test the capability of this feature by modifying the configuration bitstream or intentionally
corrupting the bitstream during configuration.
摘抄的一段数据手册。看看是不是这个问题。