rd/wr Speculation on TZC400 controller

SaeedM over 7 years ago

Hi,

I'm looking at TZC400 datasheet and it shows that the controller enables fastpath using read speculations. However, you can disable/enable both the read and write speculation in the speculation control register mentioned in datasheet. How does the write speculation work and why don't we have it on fastpath?

Thanks,

Top replies

Christopher Tory over 7 years ago +1 suggested

Write speculation involves the write requests being sent downstream before they have been fully processed. If the request is then deemed to have failed the access, the write data and write strobes are...