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ADM1031 Datasheet(PDF) 25 Page - Analog Devices |
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ADM1031 Datasheet(HTML) 25 Page - Analog Devices |
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25 / 32 page  REV. 0 ADM1031 –25– Table XVI. Register 0x02 Status Register 1 Power-On Default = 00H Bit Name R/ W Description 0 Alarm 1 Speed Read Only This bit is set to “1” when fan is running at alarm speed. Once read, this bit will not reassert on next monitoring cycle, even if the fan is still running at alarm speed. 1 Fan 1 Fault Read Only This bit is set to “1” if Fan 1 becomes stuck or is running under speed. 2 Remote 1 High Read Only “1” indicates Remote 1 high temperature limit has been exceeded. If the temperature is still outside the Remote 1 Temp High Limit, this bit will reas- sert on next monitoring cycle. 3 Remote 1 Low Read Only “1” indicates Remote 1 low temperature limit exceeded (below). If the tem- perature is still outside the Remote 1 Temp Low Limit, this bit will reassert on next monitoring cycle. 4 Remote 1 Therm Read Only “1” indicates Remote 1 temperature Therm limit has been exceeded. This bit is cleared on a read of Status Register 1. 5 Remote Diode 1 Error Read Only This bit is set to “1” if a short or open is detected on the Remote 1 tempera- ture channel. This test is only done on power-up, and if set to 1 cannot be cleared by reading the Status Register 1. 6 Local Temp High Read Only “1” indicates Local Temp High Limit has been exceeded. If the temperature is still outside the Local Temp High Limit, this bit will reassert on next monitoring cycle. 7 Local Temp Low Read Only “1” indicates Local Temp Low Limit has been exceeded (below). If the tem- perature is still outside the Local Temp Low Limit, this bit will reassert on next monitoring cycle. Table XVII. Register 0x03 Status Register 2 Power-Up Default = 00H Bit Name R/ W Description 0 Alarm 2 Speed Read Only This bit is set to “1” when Fan 2 is running at alarm speed. Once read, this bit will not reassert on next monitoring cycle, even if the fan is still running at alarm speed. 1 Fan 2 Fault Read Only This bit is set to “1” if Fan 2 becomes stuck or is running under speed. 2 Remote 2 High Read Only “1” indicates Remote 2 high temperature limit has been exceeded. If the temperature is still outside the Remote 2 Temp High Limit, this bit will reas- sert on the next monitoring cycle. 3 Remote 2 Low Read Only “1” indicates Remote 2 low temperature limit exceeded (below). If the tem- perature is still outside the Remote 2 Temp Low Limit, this bit will reassert on the next monitoring cycle. 4 Remote 2 Therm Read Only “1” indicates Remote 2 temperature Therm limit has been exceeded. This bit is cleared on reading Status Register 2. 5 Remote Diode 2 Error Read Only This bit is set to “1” if a short or open is detected on the Remote 2 tempera- ture channel. This test is only done on power-up, and if set to 1 cannot be cleared by reading Status Register 2. 6 Local Therm Read Only “1” indicates Local temperature Therm limit has been exceeded. This bit clears on a read of Status Register 2. 7 THERM Read Only Set to “1” when THERM is pulled low as an input. This bit clears on a read of Status Register 2. Table XVIII. Register 0x06 Extended Temperature Resolution Power-On Default = 00H Bit Name R/ W Description <2:0> Remote Temp 1 Read Only Holds extended temperature resolution bits for Remote 1 channel. <5:3> Remote Temp 2 Read Only Holds extended temperature resolution bits for Remote 2 channel. <7:6> Local Temp Read Only Holds extended temperature resolution bits for Local Temperature channel. |
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