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82C37 Datasheet(PDF) 3 Page - OKI electronic componets

Part # 82C37
Description  PROGRAMMABLE DMA CONTROLLER
PDF  34 Pages
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Manufacturer  OKI [OKI electronic componets]
Direct Link  http://www.oki.com
Logo OKI - OKI electronic componets

82C37 Datasheet(HTML) 3 Page - OKI electronic componets

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¡ Semiconductor
MSM82C37B-5RS/GS/VJS
BLOCK DIAGRAM
4
4
8 4
4
2
IOR
IOW
MEMR
MEMW
READY
ADSTB
AEN
CS
CLK
RESET
EOP
Timing
Control
Circuit
TC
(Terminal Count)
Decrementer
Temporary Word
Count Register (16)
HLDA
HRQ
DREQ0 - 3
DACK0 - 3
Priority
Judgment
Circuit
Mode
Register
(4 ¥ 16)
Command
Register (8)
Mark
Register (4)
Request
Register (4)
Incrementer/Decrementer
Temporary Address
Register (16)
16 Bit Bus
16 Bit Bus
Base Word
Count
Register
(4 ¥ 16)
Current
Word
Count
Register
(4 ¥ 16)
Base
Address
Register
(4 ¥ 16)
Current
Address
Register
(4 ¥ 16)
Internal Data Bus
Status
Register (8)
Temporary
Register (8)
Input/Output
Buffer
Output
Buffer
Input/Output
Buffer
Command
Control
Circuit
D0 - 1
A4 - A7
A0 - A3
DB0 - DB7



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