RTD Embedded Technologies, Inc.
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26
DM35956HR User’s Manual
6.
Restore Other Registers
a.
Restore GPIOAB_CTRL
b.
Restore GPIOCD_CTRL bit-
wise or’ed with the Read Value (to make sure the SELECT pins are always output)
c.
Restore SELECT and INDEX_DATA with the WR_STRB bit cleared (to make sure a write i
sn’t duplicated)
NOTE: If multi-thread safe operation is not required, steps 1, 2, 5, and 6 can
be eliminated.
