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器件描述：SYSTEM I/O APIC(SIO.A) AND
器件厂商：INTEL [Intel Corporation]
厂商主页：http://www.intel.com/
文件大小：1039.88KB
文件页数：137
PDF阅读：82378ZB.pdf (点击阅读器件资料)
摘要：
E
Information in this document is provided in connection with Intel products. Intel assumes no liability whatsoever, including infringement of
any patent or copyright, for sale and use of Intel products except as provided in Intel’s Terms and Conditions of Sale for such products.
Intel retains the right to make changes to these specifications at any time, without notice. Microcomputer Products may have minor
variations to this specification known as errata. Other brands and names are the property of their respective owners.
? INTEL CORPORATION 1996 March 1996 Order Number: 290571-001
Provides the Bridge Between the PCI
Bus and ISA Bus
100% PCI and ISA Compatible
? PCI and ISA Master/Slave Interface
? Directly Drives 10 PCI Loads and 6
ISA Slots
? PCI at 25 MHz and 33 MHz
? ISA from 6 MHz to 8.33 MHz
Enhanced DMA Functions
? Scatter/Gather (S/G) (82378ZB)
? Fast DMA Type A, B and F (82378ZB)
? Compatible DMA Transfers
? 32-bit Addressability(82378ZB)
? 27-bit Addressability(82379AB)
? Seven Independently Programmable
Channels
? Functionality of Two 82C37A DMA
Controllers
Data Buffers to Improve Performance
? 8-Byte DMA/ISA Master Line Buffer
? 32-bit Posted Memory Write Buffer to
ISA
Integrated 16-bit BIOS Timer
Non-Maskable Interrupts (NMI)
? PCI System Errors
? ISA Parity Errors
Arbitration for ISA Devices
? ISA Masters
? DMA and Refresh
Four Dedicated PCI Interrupts
? Level Sensitive
? Mapped to Any Unused Interrupt
Arbitration for PCI Devices
? Six PCI Masters Supported
? Fixed, Rotating, or a Combination
Utility Bus (X-Bus) Peripheral Support
? Provides Chip Select Decode
? Controls Lower X-Bus Data Byte
Transceiver
Functionality of One 82C54 Timer
? System Timer
? Refresh Request
? Speaker Tone Output
Functionality of Two 82C59 Interrupt
Controllers
? 14 Interrupts Supported
? Edge/Level Selectable Interrupts
I/O APIC (Advanced Programmable
Interrupt Controller (82379AB)
? Support for Multi-Processor Systems
System Power Management (Intel SMM
Support)
? Programmable System Management
Interrupt (SMI)?Hardware Events,
Software Events, EXTSMI#
? Programmable CPU Clock Control
(STPCLK#)
? Fast-On/Off Mode
208-Pin QFP Package
The 82378ZB System I/O (SIO) and 82379AB System I/O APIC (SIO.A) components are PCI-to-ISA Bus Bridge
devices. These devices integrate many of the common I/O functions found in today's ISA-based PC systems?a
seven channel DMA controller, two 82C59 interrupt controllers, an 8254 timer/counter, a BIOS timer, Intel SMM
power management support, and logic for NMI generation. In addition, the SIO and SIO.A each support a total of
six PCI Masters, and four PCI Interrupts. Decode is provided for peripheral devices such as the flash BIOS, real
time clock, keyboard/mouse controller, floppy controller, two serial ports, one parallel port, and IDE hard disk
drive.
For both the SIO and SIO.A, each DMA channel supports compatibility transfers. The SIO also supports types
A, B, and F transfers and scatter/gather. In addtion to the standard ISA-compatible interrupt controller that is in
both the SIO and SIO.A, the SIO.A contains an Advance Programmable Interrupt Controller (IO APIC) for use in
multi-processing systems.
This document describes both the 82378ZB (SIO) and 82379AB (SIO.A) components. Unshaded areas describe
the 82378ZB. Shaded areas, like this one, describe differences between the 82379AB and 82378ZB.
82378ZB SYSTEM I/O (SIO) AND
82379AB SYSTEM I/O APIC (SIO.A)
相关器件：82379AB
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