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W83781D Datasheet(PDF) 11 Page - Winbond

Part # W83781D
Description  H/W MONITORING IC
Download  54 Pages
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Manufacturer  WINBOND [Winbond]
Direct Link  http://www.winbond.com
Logo WINBOND - Winbond

W83781D Datasheet(HTML) 11 Page - Winbond

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W83781D/W83781G
Publication Release Date: April 14, 2005
- 7 -
Revision 2.0
The register structure is showed as the diagram next page.
The second interface use Serial Bus. In the W83781D/G has three serial bus address. That is, the first
address defined at CR48 can read/write all registers excluding Bank 1 and Bank 2 temperature 2/3
registers, the second address defined at CR4A.bit2-0 only read/write temperature sensor 2 registers,
and the third address defined at CR4A.bit6-4 only can access (read/write) temperature sensor 3
registers.
Configuration Register
40h
Interrupt Status Registers
41h, 42h
SMI# & IRQ Mask Registers
42h, 43, 44h, 45h
VID<3:0>/Fan Divisor Register
47h
Serial Bus Address
48h
Monitor Value Registers
20h~3Fh
and
60h~7Fh (auto-increment)
VID<4>/Device ID
49h
Temperature 2, 3 Serial
Bus Address
4Ah
Pin Control Register
4Bh
IRQ Polarity Select
4Ch
Fan IN/OUT and BEEP/GPO#
Control Register
4Dh
Select Bank for 50h~5Fh Reg.
4Eh
Winbond Vendor ID
4Fh
BANK 0
R-T Table Value
BEEP Control Register
Winbond Test Register
50h~58h
BANK 1
Temperature 2 Control/Staus
Registers
50h~56h
BANK 2
Temperature 3 Control/Staus
Registers
50h~56h
Data
Register
Port 6h
Port 5h
Index
Register
ISA
Data
Bus
ISA
Address
Bus


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