本帖最后由 mmoliver 于 2013-8-13 22:51 编辑

不要再删我这个帖子了，已经两次了，为什么呢？有问题大家讨论一下，互相学习嘛。
FPGA是Spartan 6的LX150，SPI flash是N25Q128A13ESE40F，128Mbit。
原理图如下
SPI flash
在Impact里面的配置信息如下：
INFO:iMPACT - Current time: 2013/8/13 22:46:25
PROGRESS_START - Starting Operation.
Maximum TCK operating frequency for this device chain: 25000000.
Validating chain...
Boundary-scan chain validated successfully.
'1': SPI access core not detected. SPI access core will be downloaded to the device to enable operations.
INFO:iMPACT - Downloading core file D:/Xilinx/14.3/ISE_DS/ISE/spartan6/data/xc6slx150_spi.cor.
'1': Downloading core...
LCK_cycle = NoWait.
LCK cycle: NoWait
done.
'1': Reading status register contents...
INFO:iMPACT:2219 - Status register values:
INFO:iMPACT - 0011 1100 1110 1100
INFO:iMPACT:2492 - '1': Completed downloading core to device.
'1': IDCODE is '000000' (in hex).
'1': ID Check failed.
INFO:iMPACT:2488 - The operation did not complete successfully.
INFO:iMPACT - SPI Device not found.
INFO:iMPACT:2488 - The operation did not complete successfully.
INFO:iMPACT - '1': Flash was not programmed successfully.
PROGRESS_END - End Operation.
Elapsed time =      6 sec.

不知道有没有人用过N25Q128A13ESE40F这片SPI flash，遇到过类似的问题吗？