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參數(shù)資料
| 型號： | FMS2704LT1C |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO24 |
| 封裝： | TSSOP-24 |
| 文件頁數(shù)： | 38/39頁 |
| 文件大?。?/td> | 173K |
| 代理商： | FMS2704LT1C |
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PRODUCT SPECIFICATION
FMS2704/FMS2704L
8
REV. 1.01 12/2/99
Global Register Denitions
Conguration Register (0x40)
Address
Name
Type
Description
0x3E
MFR7-0
R
Manufacturer ID. Value is FC.
0x3F
NUM7-0
R
Version and Revision. NUM7-4 = 1, the FMS2704 version number.
NUM3-0 = revision number.
BIT#
Name
Type
Description
0
START
R/W
Start Temperature and Voltage Monitoring. (Power-up default = 1)
0: Standby mode. (INT is not cleared)
1: Run. All limit and trip values should be entered into FMS2704 registers
prior to setting START = 1.
1
INT_EN
R/W
Interrupt Enable
0: Disabled (Power-up default)
1: Enables the INT output.
2
INT_CLR
R/W
Interrupt Clear. (Power-up default = 1)
0: INT output unaffected.
1: Clears the INT output. Contents of the Interrupt Status Register
preserved.
3
TRIP_LOCK
R/(W-once)
Temperature Trip Point Lock. (Power-up default = 0)
0:
1. THERM limits are the fixed values: FTL7-0 and FTR7-0.
2. Writes to programmable registers PTL and PTR are enabled.
3. Writes to A/D Converter Calibration Registers are enabled.
1:
1. THERM limits are the programmable values PTL7-0 and PTR7-0, while
RST = H.
2. Writes to A/D Converter Calibration Registers are inhibited.
4
SOFT_RST
R/W
Soft Reset. (Power-up default = 0)
0: Power-up default restored by SOFT_RST cycle.
1: Restore power-up values to the Configuration, Interrupt Status, and
Interrupt Mask registers.
5
Reserved
Fan Drive Conguration Register (44)
BIT#
Name
Type
Description
0
VOLTA
R/W
Fan Speed A Analog Voltage Output Enable.
0: Disable.
1: Enable analog voltage output on FAN_SPDA.
1
PWMA
R/W
Fan Speed A PWM Output Enable.
0: Disable.
1: Enable pulse width modulated output on FAN_SPDA.
2
VOLTB
R/W
Fan Speed B Analog Output Enable.
0: Disable.
1: Enable analog voltage output on FAN_SPDB.
3
PWMB
R/W
Fan Speed B PWM Output Enable.
0: Disable.
1: Enable pulse width modulated output on FAN_SPDB.
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