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ADM1031ARQZ-R7 数据表(PDF) 23 Page - ON Semiconductor |
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ADM1031ARQZ-R7 数据表(HTML) 23 Page - ON Semiconductor |
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23 / 30 page  ADM1031 http://onsemi.com 23 Figure 39. Typical Application Circuit SDA SCL GND VCC 1 2 3 4 16 15 14 13 ADM1031 5 12 6 7 8 9 10 11 INT (SMBALERT) TACH1/AIN1 D1+ D1–/NTI ADD THERM FAN_FAULT PWM_OUT2 TACH2/AIN2 FAN_FAULT TO SIGNAL FAN FAILURE CONDITION CPU INTERRUPT SDA SCL 2N3904 OR PENTIUM III CPU THERMAL DIODE 3.3 V 3.3 V 5.0 V TACH FAN11 3−WIRE FAN PWM_OUT1 D2+ D2– NDT3055L (NMOS) 10 kV TYP 3.3 V 10 kV TYP 3.3 V 10 kV TYP 2.2 kV 3.3 V 2.2 kV 3.3 V 10 kV TYP 3.3 V 10 kV TYP 3.3 V 5.0 V FAN2 NDT3055L (N−MOS) RSENSE 0.01mF 2N3904 OR PENTIUM III CPU THERMAL DIODE 1IN ACTUAL APPLICATION, BOTH FANS MUST BE 2−WIRE OR 3−WIRE TYPE. A SINGLE BIT CONTROLS WHETHER TACH1/AIN1 AND TACH2/AIN2 ARE ANALOG OR DIGITAL INPUTS. 5.0 V MAX (DO NOT CONNECT TO 12 V) 2−WIRE FAN THERM SIGNAL TO THROTTLE CPU CLOCK 10 kV TYP Table 12. Registers Register Name Address A7−A0 in Hex Comments Value Registers 0x08–0x1E See Table 13. Device ID Register 0x3D This location contains the device identification number. Since this device is the ADM1031, this register contains 0x31. This register is read only. Company ID THERM 0x3E This location contains the company identification number (0x41). This register is read only. Behavior/Revision 0x3F This location contains the revision number of the device. The lower four bits reflect device revisions [3:0]. Bit 7 of this register is the THERM−to−fan enable bit. See Table 17. Configuration Register 1 0x00 See Table 14. (Power−On Value = 1001 0000) Configuration Register 2 0x01 See Table 15. (Power−On Value = 0111 1111) Status Register 1 0x02 See Table 16. (Power−On Value = 0000 0000) Status Register 2 0x03 See Table 17. (Power−On Value = 0000 0000) Manufacturer’s Test Register 0x07 This register is used by the manufacturer for test purposes only. This register should not be read from or written to in normal operation. Fan Characteristics Register 1 0x20 See Table 19. (Power−On Value = 0101 1101) Fan Characteristics Register 2 0x21 See Table 20 . (Power−On Value = 0101 1101) Fan Speed Configuration Register 0x22 See Table 21. (Power−On Value = 0101 0101) Fan Filter Register 0x23 See Table 22. (Power−On Value = 0101 0000) Local Temperature TMIN/TRANGE 0x24 See Table 23. (Power−On Value = 0100 0001) Remote 1 Temperature TMIN/TRANGE 0x25 See Table 24. (Power−On Value = 0110 0001) Remote 2 Temperature TMIN/TRANGE 0x26 See Table 25. (Power−On Value = 0110 0001) |
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