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LM63CIMAX/NOPB 数据表(PDF) 26 Page - Texas Instruments |
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LM63CIMAX/NOPB 数据表(HTML) 26 Page - Texas Instruments |
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26 / 44 page  LM63 SNAS190E – SEPTEMBER 2002 – REVISED MAY 2013 www.ti.com Table 9. Remote Diode Temperature, Offset And Setpoint Registers ADDRESS READ/ POR BITS NAME DESCRIPTION HEX WRITE VALUE This is the MSB of the 2’s complement value, representing the Remote Diode temperature of the remote diode connected to the LM63. Bit 7 is the 01 Read Only 7:0 N/A Temperature sign bit, bit 6 has a weight of 0x40 (64°), and bit 0 has a weight of 1°C. Reading (MSB) This byte to be read first. The LM63C and LM63D will report the actual thermal diode temperature. This is the LSB of the 2’s complement value, representing the temperature of the remote diode connected to the LM63. Bit 7 has a Remote Diode 7:5 N/A weight 0.5°C, bit 6 has a weight of 0.25°C, and bit 5 has a weight of 10 Read Only Temperature 0.125°C. Reading (MSB) 4:0 00 Always 00. Remote These registers contain the value added to or subtracted from the 11 R/W 7:5 00 Temperature remote diode’s reading to compensate for the different non-ideality OFFSET (MSB) factors of different processors, diodes, etc. The 2’s complement value, in these registers is added to the output of the LM63’s ADC to form the Remote 7:5 00 temperature reading contained in registers 01 and 10. 12 R/W Temperature 4:0 00 OFFSET (LSB) Always 00. 0x46 Remote HIGH 07 (0D) R/W 7:0 High setpoint temperature for remote diode. Same format as Remote (70°C) Setpoint (MSB) Temperature Reading (registers 01 and 10). 7:5 00 Remote HIGH 13 R/W Setpoint (LSB) 4:0 00 Always 00. 00 Remote LOW 08 (0E) R/W 7:0 Low setpoint temperature for remote diode. Same format as Remote (0°C) Setpoint (MSB) Temperature Reading (registers 01 and 10). 7:5 00 Remote LOW 14 R/W Setpoint (LSB) 4:0 00 Always 00. This 8-bit integer storing the T_CRIT limit is nominally 85°C. This value can be changed once after power-up by setting T_CRIT Limit Override 0x55 Remote Diode 19 R/W 7:0 (bit 1) in the Configuration register to a 1, then programming a new (85°C) T_CRIT Limit T_CRIT value into this register. The T_CRIT Limit can not be changed again except by cycling power to the LM63. Remote Diode 8-bit integer storing T_CRIT hysteresis. T_CRIT stays activated until 0x0A 21 R/W 7:0 T_CRIT the remote diode temperature goes below [(T_CRIT Limit)—(T_CRIT (10°C) Hysteresis Hysteresis)]. 7:3 00000 These bits are unused and should always set to 0. 00: Filter Disabled Remote Diode 01: Filter Level 1 (minimal filtering, same as 10) 2:1 00 Temperature 10: Filter Level 1 (minimal filtering, same as 01) Filter BF R/W 11: Filter Level 2 (maximum filtering) 0: the ALERT/Tach pin functions normally. Comparator 1: the ALERTTach pin behaves as a comparator, asserting itself when 0 0 Mode an ALERT condition exists, de-asserting itself when the ALERT condition goes away. 26 Submit Documentation Feedback Copyright © 2002–2013, Texas Instruments Incorporated Product Folder Links: LM63 |
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