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82C37 参数 Datasheet PDF下载

82C37图片预览
型号: 82C37
PDF下载: 下载PDF文件 查看货源
内容描述: 可编程DMA控制器 [PROGRAMMABLE DMA CONTROLLER]
分类和应用: 控制器
文件页数/大小: 34 页 / 299 K
品牌: OKI [ OKI ELECTRONIC COMPONETS ]
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¡ Semiconductor
MSM82C37B-5RS/GS/VJS
BLOCK DIAGRAM
IOR
IOW
MEMR
MEMW
READY
ADSTB
AEN
CS
CLK
RESET
EOP
Base Word
Count
Register
(4
¥
16)
Current
Word
Count
Register
(4
¥
16)
Base
Address
Register
(4
¥
16)
Current
Address
Register
(4
¥
16)
TC
(Terminal Count)
Timing
Control
Circuit
Decrementer
Temporary Word
Count Register (16)
Incrementer/Decrementer
8 4
Temporary Address
Register (16)
4
Output
Buffer
Input/Output
Buffer
A
4 -
A
7
16 Bit Bus
16 Bit Bus
A
0 -
A
3
A
8
- A
15
Command
Control
Circuit
2
D
0 - 1
HLDA
HRQ
DREQ
0 - 3
DACK
0 - 3
Priority
4 Judgment
4
Circuit
Mode
Register
(4
¥
16)
Command
Register (8)
Mark
Register (4)
Request
Register (4)
Status
Register (8)
Temporary
Register (8)
Internal Data Bus
Input/Output
Buffer
DB
0 -
DB
7
3/33