koichi sakagami

MK66 :  Is it possible to use the FB_CSx signal instead of FB_ALE for recognizing a bus transaction start ?

Discussion created by koichi sakagami on Aug 26, 2016
Latest reply on Sep 1, 2016 by koichi sakagami

Dear community,
    I have been developing my product with MK66FX1M0VLQ18.

 

I plan to use the 32bit data bus SRAM with Flexbus.
I hope to use some FB_CSx signals.


But, I think that I can use only FB_CS0 signal.
I can not use the FB_CS1 ,as the FB_CS1 is multiplexed with FB_ALE.

 

[Question]
    So,Is it possible to use the FB_CSx signal instead of FB_ALE function for recognizing a bus transaction start ?
    If yes,
    an external device can be connected with FB_CSx signal for recognizing a bus transaction start instead of FB_ALE.
    And I can use FB_CS1 signal for chip select function.

 

Best Regards,
Koichi Sakagami

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