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Possible error in 5270 EPORT documentation

Question asked by yevgenit on Aug 30, 2010
Latest reply on Sep 2, 2010 by yevgenit

"MCF5271 Reference Manual" (MCF5271RM Rev.2 07/2006) has either error or unclear statement in Table 15-5.EPIER Field Descriptions:

"Clearing a bit in EPIER negates any interrupt request from the corresponding EPORT pin"

 

It is tested with 5270, that the corresponding EPFR bits must be cleared by EPFR writing in the ISR even in case of the corresponding interrupt is desabled by writing 0 to the EPIER bit.

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