Based on kernel version 3.13. Page generated on 2014-01-20 22:03 EST.
1 Kernel driver lm95234 2 ===================== 3 4 Supported 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 11 Author: Guenter Roeck <firstname.lastname@example.org> 12 13 Description 14 ----------- 15 16 LM95234 is an 11-bit digital temperature sensor with a 2-wire System Management 17 Bus (SMBus) interface and TrueTherm technology that can very accurately monitor 18 the temperature of four remote diodes as well as its own temperature. 19 The four remote diodes can be external devices such as microprocessors, 20 graphics processors or diode-connected 2N3904s. The LM95234's TruTherm 21 beta compensation technology allows sensing of 90 nm or 65 nm process 22 thermal diodes accurately. 23 24 All temperature values are given in millidegrees Celsius. Temperature 25 is provided within a range of -127 to +255 degrees (+127.875 degrees for 26 the internal sensor). Resolution depends on temperature input and range. 27 28 Each sensor has its own maximum limit, but the hysteresis is common to all 29 channels. The hysteresis is configurable with the tem1_max_hyst attribute and 30 affects the hysteresis on all channels. The first two external sensors also 31 have a critical limit. 32 33 The lm95234 driver can change its update interval to a fixed set of values. 34 It will round up to the next selectable interval. See the datasheet for exact 35 values. Reading sensor values more often will do no harm, but will return 36 'old' values.