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-Kernel driver lm95234
-Supported chips:
- * National Semiconductor / Texas Instruments LM95233
- Addresses scanned: I2C 0x18, 0x2a, 0x2b
- Datasheet: Publicly available at the Texas Instruments website
- http://www.ti.com/product/lm95233
- * National Semiconductor / Texas Instruments LM95234
- Addresses scanned: I2C 0x18, 0x4d, 0x4e
- Datasheet: Publicly available at the Texas Instruments website
- http://www.ti.com/product/lm95234
-Author: Guenter Roeck <linux@roeck-us.net>
-LM95233 and LM95234 are 11-bit digital temperature sensors with a 2-wire
-System Management Bus (SMBus) interface and TrueTherm technology
-that can very accurately monitor the temperature of two (LM95233)
-or four (LM95234) remote diodes as well as its own temperature.
-The remote diodes can be external devices such as microprocessors,
-graphics processors or diode-connected 2N3904s. The chip's TruTherm
-beta compensation technology allows sensing of 90 nm or 65 nm process
-thermal diodes accurately.
-All temperature values are given in millidegrees Celsius. Temperature
-is provided within a range of -127 to +255 degrees (+127.875 degrees for
-the internal sensor). Resolution depends on temperature input and range.
-Each sensor has its own maximum limit, but the hysteresis is common to all
-channels. The hysteresis is configurable with the tem1_max_hyst attribute and
-affects the hysteresis on all channels. The first two external sensors also
-have a critical limit.
-The lm95234 driver can change its update interval to a fixed set of values.
-It will round up to the next selectable interval. See the datasheet for exact
-values. Reading sensor values more often will do no harm, but will return
-'old' values.