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AMC6821 Datasheet(PDF) 38 Page - Texas Instruments

Part # AMC6821
Description  Intelligent Temperature Monitor and PWM Fan Controller
PDF  57 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

AMC6821 Datasheet(HTML) 38 Page - Texas Instruments

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AMC6821
SBAS386C – MAY 2006 – REVISED JULY 2007
Configuration Register 4 (Address 0x04, Value After Power-On Reset = 0x08)
BIT
NAME
R/W
DEFAULT
DESCRIPTION
7
MODE
R/W
0
Required configure bit: User must write a 1 to this location.
Number of pulses per revolution of the fan. Power-on default = 0. PLSPR = 0 for two
6
PSPR
R/W
0
pulses/revolution (default), PLSPR = 1 for four pulses per revolution.
When TACH-FAST = 1, the TACH data reading is updated every 250ms. This monitor is
5
TACH-FAST
R/W
0
the fast RPM monitor. When TACH-FAST = 0, the TACH data reading is updated every
second. Default = 0, power-on default = 0.
Setting this bit to '1' enables the OVR pin. Clearing this bit ('0') disables the OVR pin
4
OVREN
R/W
0
(high-impedance). Default = 0.
3
Reserved
R
1
Read back '1'.
2
Reserved
R
0
Read-back '0'.
1
Reserved
R
0
Read-back '0'.
0
Reserved
R
0
Read-back '0'.
Writing the reserved bit has no effect.
38
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Copyright © 2006–2007, Texas Instruments Incorporated
Product Folder Link(s): AMC6821



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