W83601R/G
8.2 GPI/O Output Mode:
8.2.1 GPO output
Tow output modes for GPO. One is LEVEL and the other is PULSE.
GPO OUTPUT
STYLE
OUTPUT PORT
REGISTER
OUTPUT VALUE AT
PIN
POLARITY
WAVE
0
0
0
1
0
1
1
Level
Pulse
1
1
0
0
1
write 1
write 1
Active
Active
8.2.2 INT output
There are two output modes for the INT pin. One is the LEVEL mode and the other is PULSE.
INT OUTPUT
MODE
POLARITY
OUTPUT
WAVE
Level
0(normal low)
1(normal high)
0(normal low)
1(normal high)
1
0
Pulse
High Pulse
Low Pulse
In the Level mode, if INT is activated, it will be de-activated when the interrupt status registers are read.
In the Pulse mode, interrupt will be activated again unless all of the enabled interrupt status registers are
read.
8.2.3 GPI interrupt status
Once a transition occurs on the GPI input pins, the interrupt status registers (CR10, CR11) will be set. At
the mean time, if the interrupt function is enabled, the INT pin will generate an interrupt. Reading these
interrupt registers will clear themselves and reset the interrupt. If an interrupt occurs but the interrupt
status registers are not read, the interrupt will not be generated again.
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