配置Xilinx PROM XCF01S问题

PCB电路是根据手册自己设计的。采用ISE 10.1版本。Xilinx PROM为xcf01s，配置的FPGA为Virtex-ii系列XC2V40。采用主串模式配置，M[2:0] = 000。用JTAG下载配置程序给PROM后，不能自动配置FPGA。iMPACT配置过程信息如下：// *** BATCH CMD : Program -p 1 -e -v -loadfpga
Maximum TCK operating frequency for this device chain: 15000000.
Validating chain...
Boundary-scan chain validated successfully.
'1': Erasing device...
PROGRESS_START - Starting Operation.
'1': Erasure completed successfully.
'1': Programming device...
done.
'1': Putting device in ISP mode...done.
'1': Putting device in ISP mode...done.
'1': Verifying device...done.
'1': Verification completed successfully.
'1': Calculated checksum matches expected checksum, 0011b0790
'1': Putting device in ISP mode...done.
'1': Putting device in ISP mode...done.
'1': Setting user-programmable bits...
done.
'1': Putting device in ISP mode...done.
'1': Starting FPGA Load with Prom Data...INFO:iMPACT:563 - '1'  please ensure proper connections as specified by the data book ...
'1': Programming completed successfully.
'1': Programming completed successfully.
PROGRESS_END - End Operation.
Elapsed time =      8 sec.

我觉得是红色地方可能提示些什么，但是不知道这具体暗示什么。
下图为电路连接，没看出有什么问题。

通过回读PROM中配置数据，可以确定配置数据已经加载到PROM中，就是上电后，PROM不能自动配置FPGA。