Hardware Functional Overview 4-9
Supports ISA and EIO at 1/4 of PCI Frequency
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Supports both Mobile and Desktop Deep Green Environments
3.3V Operation with 5V Tolerant Buffers
Ultra-Low Power for Mobile Environment Support
Power-On Suspend, Suspend to RAM, Suspend to Disk, and Soft-
OFF System States
All Registers are Readable and Restorable for Proper Resume from
0V Suspend
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Power Management Logic
Global and Local Device Management
Suspend and Resume Logic
Supports Thermal Alarm
Support for External Microcontroller
Full Support for Advanced Configuration and Power Interface
(ACPI) Revision 1.0 Specification and OS Directed Power
Management
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Integrated IDE Controller
Independent Timing of up to 4 Drives
PIO Mode 4 and Bus Master IDE Transfers up to 14 Mbytes/sec
Supports Ultra DMA/33 Synchronous DMA Mode Transfers up to
33 Mbytes/sec
Integrated 16 x 32-bit Buffer for IDE PCI Burst Transfers
Supports Glue-less Swap Bay Option with Full Electrical Isolation
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Enhanced DMA Controller
Two 82C37 DMA Controllers
Supports PCI DMA with 3 PC/PCI Channels and Distributed DMA
Protocols (simultaneously)
Fast Type-F DMA for Reduced PCI Bus Usage
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Interrupt Controller Based on Two 82C59
15 Interrupt Support
Independently Programmable for Edge/Level Sensitivity