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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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EMC2101-R-ACZL-TR 数据表(PDF) 32 Page - SMSC Corporation |
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EMC2101-R-ACZL-TR 数据表(HTML) 32 Page - SMSC Corporation |
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32 / 57 page  SMBus Fan Control with 1°C Accurate Temperature Monitoring Datasheet Revision 2.54 (06-16-09) 32 SMSC EMC2101 DATASHEET Note 6.1 The Look Up Table Registers are made Read Only if the PWM Program bit (bit 5) in PWM Configuration Register (4Ah) is set. 6.1 Data Read Interlock When the External Diode High Byte Register is read, the External Diode Low byte is copied into an internal ‘shadow’ register. The user is free to read the low byte at any time and be guaranteed that it will correspond to the previously read high byte. Regardless if the low byte is read or not, reading from an External Diode High Byte Register will automatically refresh this stored low byte data. When the TACH Reading Low Byte Register is read, the TACH Reading high byte is copied into an internal ‘shadow’ register. The user is free to read the high byte at any time and be guaranteed that it will correspond to the previously read low byte. Regardless if the high byte is read or not, reading from the TACH Reading Low Byte Register will automatically refresh this stored high byte data. 6.2 Register Descriptions The registers are described in detail below. A bit entry of a ‘-’ indicates that the bit is not used and will always read 0. 57h R/W (See Note 6.1) Lookup Table Fan Setting 4 Associated Fan Setting for Temp Setting 4 3Fh Page 46 58h R/W (See Note 6.1) Lookup Table Temp Setting 5 Look Up Table Temperature Setting 5 7Fh Page 46 59h R/W (See Note 6.1) Lookup Table Fan Setting 5 Associated Fan Setting for Temp Setting 5 3Fh Page 46 5Ah R/W (See Note 6.1) Lookup Table Temp Setting 6 Look Up Table Temperature Setting 6 7Fh Page 46 5Bh R/W (See Note 6.1) Lookup Table Fan Setting 6 Associated Fan Setting for Temp Setting 6 3Fh Page 46 5Ch R/W (See Note 6.1) Lookup Table Temp Setting 7 Look Up Table Temperature Setting 7 7Fh Page 46 5Dh R/W (See Note 6.1) Lookup Table Fan Setting 7 Associated Fan Setting for Temp Setting 7 3Fh Page 46 5Eh R/W (See Note 6.1) Lookup Table Temp Setting 8 Look Up Table Temperature Setting 8 7Fh Page 46 5Fh R/W (See Note 6.1) Lookup Table Fan Setting 8 Associated Fan Setting for Temp Setting 8 3Fh Page 46 BFh R/W Averaging Filter Selects averaging function for external diode 00h Page 47 FDh R Product ID ID 16h or 28h Page 48 FEh R Manufacturer ID SMSC 5Dh Page 48 FFh R Revision Register REV 01h Page 48 Table 6.1 Register Set in Hexadecimal Order (continued) REGISTER ADDRESS R/W REGISTER NAME FUNCTION DEFAULT VALUE PAGE |
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