1Kernel driver lm95234 2===================== 3 4Supported chips: 5 * National Semiconductor / Texas Instruments LM95234 6 Addresses scanned: I2C 0x18, 0x4d, 0x4e 7 Datasheet: Publicly available at the Texas Instruments website 8 http://www.ti.com/product/lm95234 9 10 11Author: Guenter Roeck <linux@roeck-us.net> 12 13Description 14----------- 15 16LM95234 is an 11-bit digital temperature sensor with a 2-wire System Management 17Bus (SMBus) interface and TrueTherm technology that can very accurately monitor 18the temperature of four remote diodes as well as its own temperature. 19The four remote diodes can be external devices such as microprocessors, 20graphics processors or diode-connected 2N3904s. The LM95234's TruTherm 21beta compensation technology allows sensing of 90 nm or 65 nm process 22thermal diodes accurately. 23 24All temperature values are given in millidegrees Celsius. Temperature 25is provided within a range of -127 to +255 degrees (+127.875 degrees for 26the internal sensor). Resolution depends on temperature input and range. 27 28Each sensor has its own maximum limit, but the hysteresis is common to all 29channels. The hysteresis is configurable with the tem1_max_hyst attribute and 30affects the hysteresis on all channels. The first two external sensors also 31have a critical limit. 32 33The lm95234 driver can change its update interval to a fixed set of values. 34It will round up to the next selectable interval. See the datasheet for exact 35values. Reading sensor values more often will do no harm, but will return 36'old' values. 37