W83697HF_05 Datasheet, PDF (77/102 Pages) Winbond – LPC I/O

W83697HF
IO address + 2 : CRF4 base address
IO address + 3 : CRF5 base address
CR70 (Default 0x09 if PNPCSV = 0 during POR, default 0x00 otherwise)
Bit 7 - 4: Reserved.
Bit [3:0]: These bits select IRQ resource for MIDI Port.
RF0 (GP5 selection register. Default 0xFF)
When set to a '1', respective GPIO port is programmed as an input port.
When set to a '0', respective GPIO port is programmed as an output port.
CRF1 (GP5 data register. Default 0x00)
If a port is programmed to be an output port, then its respective bit can be read/written.
If a port is programmed to be an input port, then its respective bit can only be read.
CRF2 (GP5 inversion register. Default 0x00)
When set to a '1', the incoming/outgoing port value is inverted.
When set to a '0', the incoming/outgoing port value is the same as in data register.
CRF3 (PLED mode register. Default 0x00)
Bit 7 ~ 3 : Reserved .
Bit 2: select WDTO# count mode.
= 0 second
= 1 minute
Bit 1 ~ 0: select PLED mode
= 00 Power LED pin is tri-stated.
= 01 Power LED pin is droved low.
= 10 Power LED pin is a 1Hz toggle pulse with 50 duty cycle.
= 11 Power LED pin is a 1/4Hz toggle pulse with 50 duty cycle.
CRF4 (Default 0x00)
Watch Dog Timer Time-out value. Writing a non-zero value to this register causes the counter to
load the value to Watch Dog Counter and start counting down. Reading this register returns
current value in Watch Dog Counter instead of Watch Dog Timer Time-out value.
Bit 7 - 0:
= 0x00 Time-out Disable
= 0x01 Time-out occurs after 1 second/minute
= 0x02 Time-out occurs after 2 second/minutes
= 0x03 Time-out occurs after 3 second/minutes
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= 0xFF Time-out occurs after 255 second/minutes
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