XRA1403 Datasheet, PDF (6/16 Pages) Exar Corporation – 16-BIT SPI GPIO EXPANDER WITH RESET INPUT

XRA1403
16-BIT SPI GPIO EXPANDER WITH RESET INPUT
REV. 1.0.0
1.2 Interrupts
The table below summarizes the interrupt behavior of the different register settings for the XRA1403.
TABLE 3: INTERRUPT GENERATION AND CLEARING
GCR IER REIR FEIR IFR
BIT BIT BIT BIT BIT
INTERRUPT GENERATED BY:
INTERRUPT CLEARED BY:
1 0 X X X No interrupts enabled (default)
N/A
0 A rising or falling edge on the input
Reading the GSR register or if the input
changes back to its previous state (state of
1 1 0 0 ^{1 A rising or falling edge on the input and} _{input during last read to GSR)}
remains in the new state for more than
1075ns
0 A rising edge on the input
Reading the GSR register
1
1
1
0
1 A rising edge on the input and remains high
for more than 1075ns
0 A falling edge on the input
Reading the GSR register
1
1
0
1
1 A falling edge on the input and remains low
for more than 1075ns
0 A rising or falling edge on the input
Reading the GSR register
1 1 1 1 ^{1 A rising or falling edge on the input and}
remains in the new state for more than
1075ns
0 x x x x No interrupts in output mode
N/A
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