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SHARC 2146x AMI Operation with ACK

Question asked by max64 on Aug 21, 2012
Latest reply on Aug 27, 2012 by Mitesh

I would like to use the asynchronous memory interface (AMI) with DMA to transfer 8 bit data from the SHARC to an external FIFO. The relevant control signals of the FIFO are:

 

nWR, active low write strobe, which I can connect to AMI_WR#

nTXE, active low FIFO empty flag

 

Data presented to the FIFO are written by taking nWR to '0', which is only legal while nTXE is low.

The explanation and diagrams on page 4-15 of the hardware reference gloss over the behaviour of AMI_ACK.

Please could someone provide clarification?

 

Regards,

Peter

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