Acer 61X User Manual
Major Chips Description
2-15
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32-bit addressability
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Provides compatible DMA transfers
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Provides type F transfers
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Interrupt controller
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Provides 14 interrupt channels
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Independently programmable level/edge triggered channels
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Counter/Timers
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Provides 8254 compatible timers for system timer, refresh request, speaker output use
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Keyboard controller
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Built-in PS2/AT keyboard controller
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The specific I/O is used to save the external TTL buffer
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Real time clock
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Built-in real-time clock
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128-byte CMOS RAM with 2µA standby current maximum
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Plug-and-Play port support
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programmable chip select
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Steerable interrupt request lines
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PMU interface
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Supports CPU SMM mode, SMI feature
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Supports programmable stop clock throttle
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Supports the APM control
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Provides external suspend mode switch/turbo switch/ring-in switch
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Provides four system states for power saving (on, doze, standby, suspend)
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Provides three timers from 1 second to 300 minutes to individually monitor VGA, MODE,
IN status
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Supports RTC alarm wake up control
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IDE interface
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Built-in PCI IDE master controller
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Supports PIO modes up to mode 5 timings, and multiword DMA mode 0, 1, 2
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8 x 32-bit pre-read and posted-write buffers
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Dedicated pins for ATA interface
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Supports up to 256 KB ROM size decode
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Reserved USB interface
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208-pin PQFP package