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2-24 Service Guide
2.4 ALI M7101 (Power Management Unit)
2.4.1 Features
• Four operating states - ON, DOZE, SLEEP, APM
• Programmable DOZE and SLEEP timer
• Programmable EL timer for backlight control
• Two Programmable APM timers
• Two output pins depending on operating state, each pin is programmable and power
configurable
• Provides system activity and EL activity monitorings, includes
• Video
• Harddisk
• Floppy
• Serial port
• Parallel port
• Keyboard
• Six programmable I/O address groups activity monitor
• Two programmable memory address groups activity monitor
• Multiple external wake-up events from DOZE or SLEEP to ON states
• External Push button
• Cover open
• Modem Ring
• RTC alarm
• DRQ
• Two level battery warning monitors
• 24 General Purpose I/O pins. Each pin can be programmed to become input or output
• 32 External expandable general purpose output signals
• 32 External expandable general purpose input signals
• LCD control
• Rundown monitor detect
• Suspend wake-up detect
• 100-pin PQFP package