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DM8168 Nand flash 采用8Bit模式不能正常读取NAND Flash ID



我在自己做的子板上使用的是8Bit 的镁光nand Flash芯片,设置GPMC_CONFIG1_0为0x00000810时不能正确的读出芯片的ID,但是设置GPMC_CONFIG1_0为0x00001810时就可以正确读取,这个是什么问题?

  • Wei Hua,

    请问你硬件上wait引脚是如何连接的?0x1810和0x810的差别是bit16=1.

    17-16 WAITPINSELECT Selects the input WAIT pin for this chip select (Reset value is
    BOOTWAITSELECT input pin sampled at IC reset for CS0 and 0 for CS1-5)
    0 WAIT input pin is WAIT0
    1h WAIT input pin is WAIT1
    2h Reserved
    3h Reserved