/*******************************************
* SDRAM Memory Bank Control Register Value *
* Reset = 0x0000 *
* ADSP-BF533-proc.xml = 0x0025 *
* here = 0x0025 *
*******************************************/
#define EBIU_SDBCTL_VAL (\
nEBSZ_64 | /* SDRAM External Bank Size = 32MB | For BF533 EZ-Kit Lite's rev 1.6 and below */\
EBE | /* Enable SDRAM External Bank */\
EBSZ_32 | /* SDRAM External Bank Size = 64MB | For BF533 EZ-Kit Lite's rev 1.7 and above */\
EBCAW_9 | /* SDRAM External Bank Column Address Width = 10 Bits */\
0)
这个配置是32M的, 请教下nEBSZ_64 ,EBSZ_32 ,EBCAW_9 的具体指什么?
从这上面看怎么又是64M又是32M?
EBCAW_9 指的是地址宽度为9bit吗?哪里来的9bit啊?