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iMX253 :  /DTACK generates a bus error

Question asked by koichi sakagami on Jun 1, 2016
Latest reply on Jun 1, 2016 by Yuri Muhin

Dear community,
We have been developing our product with iMX253.

 

Sometimes the iMX253 hangs up.
We believe that the /DTACK signal which is driven by FPGA affects iMX253 behavior.

 

In IMX25RM (Rev. 2)Table 49-2. WEIM Detailed Signal Descriptions,
/DTACK signal description is as follows.
[For DTACK enabled cycles, the bus time-out monitor generates a BUS ERROR
if DTACK is asserted and is not negated before 1024 clocks have elapsed.]

 

[Question]
What kind of behavior does the BUS ERROR generate specifically ?
(For example,interrupt to ARM core ...)

 

 

Best Regards,
Koichi Sakagami

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