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參數(shù)資料
| 型號(hào)： | FMS2704LT1C |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO24 |
| 封裝： | TSSOP-24 |
| 文件頁數(shù)： | 39/39頁 |
| 文件大?。?/td> | 173K |
| 代理商： | FMS2704LT1C |
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FMS2704/FMS2704L
PRODUCT SPECIFICATION
REV. 1.01 12/2/99
9
Thermometer Register Denitions
4
PWM_INVA
Fan Speed A PWM Output Invert.
0: Mark-space ratio increases with drive.
1: Mark-space ratio decreases with drive.
5
PWM_INVB
Fan Speed B PWM Output Invert.
0: Mark-space ratio increases with drive.
1: Mark-space ratio decreases with drive.
Thermometer Value Registers
Address
Name
Type
Description
0x13
PTL7-0
R/W
Programmable Local Temperature Automatic Trip Point. If TA7- > PTL7-0,
then THERM = L. Write access is disabled if the TRIP_LOCK bit in the
Configuration Register been set. (default: 46h [70°C])
0x14
PTR7-0
R/W
Programmable Remote Thermal Diode Automatic Trip Point. If TR17- >
PTR7-0 or TR27- > PTR7-0 then THERM = L. Write access is disabled if the
TRIP_LOCK bit in the Configuration Register been set. (default: 64h [100°C])
0x16
SPEEDA7-0
R/W
Fan Speed Register. Fan speed control value. (default: 00h)
0x17
FTL7-0
R
Fixed Local Temperature Automatic Trip Point. (default: 46h [70°C])
0x18
FTR7-0
R
Fixed Remote Thermal Diode Automatic Trip Point. (default: 64h [100°C])
0x19
SPEEDB7-0
R/W
Fan Speed Register. Fan speed control value. (default: 00h)
0x20
TR27-0
R
Remote Thermal Diode 2 Temperature.
0x21
TR17-0
R
Remote Thermal Diode 1 Temperature.
0x22
TL7-0
R
Local Temperature. Temperature output derived from on-chip thermal
diode.
0x23
TR2HI7-0
R/W
Remote Thermal Diode 2 High Temperature Limit. TR27-0 > TR2HI7-0 will
set the RTV2 bit in the Interrupt Status Register.
0x24
TR2LO7-0
R/W
Remote Thermal Diode 2 Low Temperature Limit. TR27-0 < TR2LO7-0 will
set the RTV2 bit in the Interrupt Status Register.
0x37
TR1HI7-0
R/W
Remote Thermal Diode 1 High Temperature Limit. TR17-0 > TR1HI7-0 will
set the RTV1 bit in the Interrupt Status Register.
0x38
TR1LO7-0
R/W
Remote Thermal Diode 1 Low Temperature Limit. TR17-0 < TR1LO7-0 will
set the RTV1 bit in the Interrupt Status Register.
0x39
TLHI7-0
R/W
Local Temperature High Temperature Limit. TA7-0 > TAHI7-0 will set the
ATV and MATV bits in the Interrupt Register.
0x3A
TLLO7-0
R/W
Local Temperature Low Temperature Limit. TA7-0 < TALO7-0 will set the
ATV and ARTV bits in the Interrupt Register.
Temperature Status Register (0x41)
BIT#
Name
Type
Description
0
LTV
R
Local Temperature Violation
0: On-chip temperature within limits.
1: On-chip temperature limit violated
1
RTV2
R
Remote Diode 2 Temperature Violation.
0: Remote temperature within limits.
1: Remote temperature limit violated
Fan Drive Conguration Register (44) (continued)
BIT#
Name
Type
Description
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