W83697HF/F
CRF1 (Default 0x00)
Bit 7
: WAK_STS. This bit is set when the chip is in the sleeping state and an enabled resume
event occurs. Upon setting this bit, the sleeping/working state machine will transition the
system to the working state. This bit is only set by hardware and is cleared by writing a 1
to this bit position or by the sleeping/working state machine automatically when the
global standby timer expires.
= 0 the chip is in the sleeping state.
= 1 the chip is in the working state.
Bit 6 - 5
: Devices' trap status.
Bit 4
: Reserved. Return zero when read.
Bit 3 - 0
: Devices' trap status.
CRF3 (Default 0x00)
Bit 7~4 : Reserved. Return zero when read.
Bit 3~0 : Device's IRQ status.
These bits indicate the IRQ status of the individual device respectively. The device's IRQ
status bit is set by their source device and is cleared by writing a 1. Writing a 0 has no
effect.
Bit 3
Bit 2
Bit 1
Bit 0
: PRTIRQSTS. printer port IRQ status.
: FDCIRQSTS. FDC IRQ status.
: URAIRQSTS. UART A IRQ status.
: URBIRQSTS. UART B IRQ status.
CRF4 (Default 0x00)
Bit 7~4 : Reserved. Return zero when read.
Bit 3~0 : These bits indicate the IRQ status of the individual GPIO function or logical device
respectively. The status bit is set by their source function or device and is cleared by writing
a1. Writing a 0 has no effect.
Bit 3 : HMIRQSTS. Hardware monitor IRQ status.
Bit 2
Bit 1
Bit 0
: WDTIRQSTS. Watch dog timer IRQ status.
: CIRIRQSTS. Consumer IR IRQ status.
: MIDIIRQSTS. MIDI IRQ status.
Publication Release Date: Feb. 2002
Revision 0.70
- 154 -
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