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ADM1025AARQ Datasheet(PDF) 14 Page - Analog Devices |
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ADM1025AARQ Datasheet(HTML) 14 Page - Analog Devices |
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14 / 16 page  REV. A ADM1025/ADM1025A –14– Table VII. Register 40H – Configuration Register Bit Name R/ W Description 0 START Read/Write Logic 1 enables start-up of monitor ASIC, Logic 0 places the ASIC in standby mode. At start-up, limit checking func- tions and scanning begins. Note, all HIGH and LOW LIMITS should be set into the ADM1025/ ADM1025A prior to turning on this bit. (Power-up Default = 0) 1 Reserved Read 2 Reserved Read 3 Reserved Read 4 RESET Read/Write Setting this bit generates a minimum 20 ms low pulse on Pin 16, if the function is enabled. 5 +12/VID4 Read/Write Selects whether Pin 11 acts Select as a 12 V Analog Input monitor- ing pin, or as a VID[4] input. This pin defaults to the 12 V Analog Input. (Default = 0) 6 Reserved Read 7 Initialization Read/Write Logic 1 restores power-up default values to the Configu- ration Register and Status Registers. This bit automati- cally clears itself and the power- on default is zero. Table VIII. Register 41H – STATUS Register 1 (Power-On Default <7:0> = 00h) Bit Name R/ W Description 0 +2.5 V_Error Read Only A one indicates a High or Low limit has been exceeded. 1VCCP_Error Read Only A one indicates a High or Low limit has been exceeded. 2 +3.3 V_Error Read Only A one indicates a High or Low limit has been exceeded. 3 +5 V_Error Read Only A one indicates a High or Low limit has been exceeded. 4 Local Temp Read Only A one indicates that a Error High or a Low Tem- perature limit has been exceeded. 5 Remote Temp Read Only A one indicates a High Error or Low Remote Tem- perature Limit has been exceeded. 6 Reserved 7 Reserved Table IX. Register 42H – Status Register 2 (Power-On Default <7:0> = 00h) Bit Name R/ W Description 0 +12 V_Error Read Only A one indicates a High or Low limit has been exceeded. 1VCC_Error Read Only A one indicates a High or Low limit has been exceeded. 2 Reserved Read Only Undefined 3 Reserved Read Only Undefined 4 Reserved Read Only Undefined 5 Reserved Read Only Undefined 6 Remote Diode Read Only A one indicates either a Fault short or open circuited fault on the remote ther- mal diode inputs. 7 Reserved Read Only Undefined Table X. Register 47h – VID REGISTER (Power-On Default = 0000 (VID[3:0])) Bit Name R/ W Description 0–3 VID[3:0] Read Only The VID[3:0] inputs from Pentium/PRO power supplies to indicate the operating voltage (e.g., 1.3 V to 2.9 V). 4–5 Reserved Read Only Undefined 6 Offset Config Read/Write Configures offset register to be used with internal or external channel. If Bit 0 of Test Register = 1, and Bit 7 of VID Register = 0, then setting this bit to 1 config- ures the Offset Register to the internal temperature chan- nel. Clearing this bit config- ures the Offset Register to the external temperature chan- nel. (Default = 0) 7 RST ENABLE Read/Write When set to 1, enables the RST output function on Pin 16. This bit defaults to 0 on power-up. ( RST Disabled.) Table XI. Register 49h – VID4 Register (Power-On Default = 1000 000(VID4)) Bit Name R/ W Description 0 VID4 Read VID4 Input (If Selected) (Defaults to 0) 1–7 Reserved Read |
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