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參數資料
型號: W83783
廠商: WINBOND ELECTRONICS CORP
英文描述: CABLE ASSEMBLY; BNC MALE TO BNC FEMALE BULKHEAD; 50 OHM, RG188-DS COAX, DOUBLE SHIELDED; 48" CABLE LENGTH; ; *USES STANDARD 50 OHM INTERFACE CONNECTORS*
中文描述: 監測集成電路
文件頁數: 11/57頁
文件大小: 312K
代理商: W83783
W83783S
Preliminary
Publication Release Date: April 1999
Revision 0.55
- 6 -
6. FUNCTIONAL DESCRIPTION
6.1 General Description
The W83783S provides at most 6 analog positive inputs, 3 fan speed monitors, 2 sets for fan PWM
(Pulse Width Modulation) control, 2 thermal inputs from remote thermistors or 2N3904 transistors or
Pentium
TM
II (Deschutes) thermal diode outputs and beep function output when the monitor value
exceed the set limit value including voltage, temperature, or fan counter. When start the monitor
function on the chip, the watch dog machine monitor every function and store the value to registers. If
the monitor value exceeds the limit value, the interrupt status will be set to 1.
6.2 Access Interface
The W83783S provides I
2
C Serial Bus to read/write internal reigsters. In the W83783S there are two
serial bus address. The first address defined at CR[48h] can read/write all registers excluding Bank 1
temperature sensor registers and the address default value is 0101101. The second address defined
at CR[4Ah] bit2-0 only read/write temperature sensor 1 registers and the address default value is
1001001.
6.2.1 The first serial bus access timing are shown as follow:
(a) Serial bus write to internal address register followed by the data byte
0
Start By
0
1
0
1
1
0
1
D7
D6
D5
D4
D3
D2
D1
D0
Ack
by
R/W
Ack
by
SCL
SDA
D7
D6
D5
D4
D3
D2
D1
D0
Ack
by
Stop
by
SCL
SDA (Continued)
7
8
0
7
8
0
7
8
Frame 2
Internal Index Register Byte
(Continued)
Frame 3
Data Byte
Frame 1
Serial Bus Address Byte
Figure 1. Serial Bus Write to Internal Address Register followed by the Data Byte
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相關代理商/技術參數
參數描述
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