memory bandwidth (was Re: JZ4750 driving large displays?)

Bas Wijnen wijnen at
Sat Aug 21 03:19:33 EDT 2010

Op 21-08-10 03:21, Werner Almesberger schreef:
> According to table 2-1 of Jz4740_pm. The D-cache (only one, it seems),
> is write-back, 16 words write buffer. Given the short treatment it
> receives in the manual, it's probably a "standard" MIPS core design.

No, it's standard xburst, and more verbosely explained in the xburst
manual. It can be set to write-back or write-through by the operating
system (in the tlb there are two cache bits which can be set to
uncached, write-back, or write-through).

You have to look in the Linux source to see which type of cache is used.


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