在数据手册第5页,对这个64K做了解释:
Custom ROM (Optional)
The on-chip L1 Instruction ROM on the ADSP-BF592 may be
customized to contain user code with the following features:
• 64K bytes of L1 Instruction ROM available for custom code
• Ability to restrict access to all or specific segments of the
on-chip ROM
Customers wishing to customize the on-chip ROM for their
own application needs should contact ADI sales for more infor-
mation on terms and conditions and details on the technical
implementation.
大致意思是说,这部分ROM是根据客户需求定制的,如果你需要,就联系ADI,然后他们给你写入你需要的代码。
所以,我们是没办法使用的。
592可用的RAM也就20K多一点,说是32K,编译后还会自己加载一些库进去,占用10K,所以这个芯片你不能做大的算法,不然会很头疼。视频类的就别想了,之前有人做二维码,是一条线一条线识别,最后还外扩了一个SPI 的RAM,用起来也不方便。