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C6713,DSP EMIF外接FPGA,什么情况下FPGA会一直占用数据总线



DSP给FPGA发送一个数据后,CE2n信号一直为低,TED、TEA一直为刚发的数据地址和数据。

/* EMIF配置 */
*(int *)EMIF_GCTL = 0x00003060;/* EMIF global control register */
*(int *)EMIF_CE1 = 0xFFFFFF23; /* CE1 - 16-bit asynch access */
*(int *)EMIF_CE0 = 0xFFFFFF30; /* CE0 - SDRAM */
*(int *)EMIF_CE2 = 0x3233C823; /* CE2 - 32-bit asynch on daughterboard */
*(int *)EMIF_CE3 = 0xFFFFFF13; /* CE3 - 32-bit asynch on daughterboard */