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參數(shù)資料
| 型號(hào)： | M82380 |
| 廠商： | Intel Corp. |
| 英文描述： | HIGH PERFORMANCE 32-BIT DMA CONTROLLER WITH INTEGRATED SYSTEM SUPPORT PERIPHERALS |
| 中文描述： | 高性能的32位DMA控制器，它集成系統(tǒng)支持外設(shè) |
| 文件頁(yè)數(shù)： | 1/134頁(yè) |
| 文件大?。?/td> | 1677K |
| 代理商： | M82380 |
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November 1992
Order Number: 271070-006
M82380
HIGH PERFORMANCE 32-BIT DMA CONTROLLER WITH
INTEGRATED SYSTEM SUPPORT PERIPHERALS
Y
High Performance 32-Bit DMA
Controller
D 40 Mbytes/sec Maximum Data
Transfer Rate at 20 MHz
D 8 Independently Programmable
Channels
Y
20-Source Interrupt Controller
D Individually Programmable Interrupt
Vectors
D 15 External, 5 Internal Interrupts
D M8259A Superset
Y
Four 16-Bit Programmable Interval
Timers
D M82C54 Compatible
Y
Programmable Wait State Generator
D 0 to 15 Wait States Pipelined
D 1 to 16 Wait States Non-Pipelined
Y
DRAM Refresh Controller
Y
i386
TM
Processor Shutdown Detect and
Reset Control
D Software/Hardware Reset
Y
High Speed CHMOS III Technology
Y
132-Pin PGA Package and 164-Pin Quad
Flat Pack
(See Packaging Specification Order
Y
231369)
Y
Optimized for use with the i386
TM
Microprocessor
D Resides on Local Bus for Maximum
Bus Bandwidth
Y
Available in Three Product Grades:
D MIL-STD-883,
b
55
§
C to
a
125
§
C (T
C
)
D Military Temperature Only,
b
55
§
C to
a
125
§
C (T
C
)
D Extended Temperature,
b
40
§
C to
a
110
§
C (T
C
)
The M82380 is a multi-function support peripheral that integrates system functions necessary in an i386
processor environment. It has eight channels of high performance 32-bit DMA with the most efficient transfer
rates possible on the i386 microprocessor bus. System support peripherals integrated into the M82380 provide
Interrupt Control, Timers, Wait State generation, DRAM Refresh Control, and System Reset logic.
The M82380’s DMA Controller can transfer data between devices of different data path widths using a single
channel. Each DMA channel operates independently in any of several modes. Each channel has a temporary
data storage register for handling non-aligned data without the need for external alignment logic.
271070–1
M82380 Internal Block Diagram
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