E
82371AB PCI-TO-ISA / IDE
XCELERATOR (PIIX4)
Supported Kits for both Pentium® and
Pentium® II Microprocessors
¾ 82430TX ISA Kit
¾ Integrated 16 x 32-bit Buffer for IDE
PCI Burst Transfers
¾ Supports Glue-less “Swap-Bay”
Option with Full Electrical Isolation
¾ 82440LX ISA/DP Kit
Enhanced DMA Controller
¾ Two 82C37 DMA Controllers
¾ Supports PCI DMA with 3 PC/PCI
Channels and Distributed DMA
Protocols (Simultaneously)
¾ Fast Type-F DMA for Reduced PCI
Bus Usage
Multifunction PCI to ISA Bridge
¾ Supports PCI at 30 MHz and 33 MHz
¾ Supports PCI Rev 2.1 Specification
¾ Supports Full ISA or Extended I/O
(EIO) Bus
¾ Supports Full Positive Decode or
Subtractive Decode of PCI
¾ Supports ISA and EIO at 1/4 of PCI
Frequency
Interrupt Controller Based on Two
82C59
¾ 15 Interrupt Support
¾ Independently Programmable for
Edge/Level Sensitivity
¾ Supports Optional I/O APIC
¾ Serial Interrupt Input
Supports both Mobile and Desktop
Deep Green Environments
¾ 3.3V Operation with 5V Tolerant
Buffers
¾ Ultra-low Power for Mobile
Environments Support
Timers Based on 82C54
¾ Power-On Suspend, Suspend to
RAM, Suspend to Disk, and Soft-
OFF System States
¾ All Registers Readable and
Restorable for Proper Resume
from 0.V Suspend
¾ System Timer, Refresh Request,
Speaker Tone Output
USB
¾ Two USB 1.0 Ports for Serial
Transfers at 12 or 1.5 Mbit/sec
¾ Supports Legacy Keyboard and
Mouse Software with USB-based
Keyboard and Mouse
Power Management Logic
¾ Global and Local Device
Management
¾ Supports UHCI Design Guide
¾ Suspend and Resume Logic
¾ Supports Thermal Alarm
¾ Support for External
Microcontroller
¾ Full Support for Advanced
Configuration and Power Interface
(ACPI) Revision 1.0 Specification
and OS Directed Power
Management
SMBus
¾ Host Interface Allows CPU to
Communicate Via SMBus
¾ Slave Interface Allows External
SMBus Master to Control Resume
Events
Real-Time Clock
¾ 256-byte Battery-Back CMOS SRAM
¾ Includes Date Alarm
Integrated IDE Controller
¾ Independent Timing of up to
4 Drives
¾ PIO Mode 4 and Bus Master IDE
Transfers up to 14 Mbytes/sec
¾ Supports “Ultra DMA/33”
Synchronous DMA Mode Transfers
up to 33 Mbytes/sec
¾ Two 8-byte Lockout Ranges
Microsoft Win95* Compliant
324 mBGA Package
© INTEL CORPORATION 1997
April 1997
Order Number: 290562-001
4/9/97 2:23 PM PIIX4aDS
INTEL CONFIDENTIAL
(until publication date)