W83601R_06 Datasheet, PDF (14/21 Pages) Winbond – Winbond GPI/O IC

W83601R/G/W83602R/G
8.4 GPI/O Output Mode :
8.4.1 GPO output
Tow output modes for GPO. One is LEVEL and the other is PULSE.
GPO OUTPUT
STYLE
POLARITY
OUTPUT PORT OUTPUT VALUE
REGISTER
AT PIN
0
0
0
1
1
Level
1
0
1
1
0
Pulse
0
write 1
Active
1
write 1
Active
WAVE
8.4.2 INT output
Two output modes for INT pin. One is LEVEL mode and the other is PULSE.
INT OUTPUT
MODE
POLARITY
OUTPUT
WAVE
Level
0(normal low)
1
1(normal high)
0
Pulse
0(normal low)
High Pulse
1(normal high)
Low Pulse
In Level mode, if INT is activated, it will be de-activated when interrupt status registers are read.
In Pulse mode, interrupt will be activated again unless all enabled interrupt status registers are read.
8.4.3 GPI interrupt status
Once a transition occurs at GPI input pins, interrupt status registers (CR10, CR11) will be set. At the
mean time, if interrupt function is enable, INT pin will generate an interrupt. Reading these interrupt
registers will clear themselves and reset interrupt. If an interrupt occurs but no read to interrupt status
registers, interrupt will not be generated again.
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