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
11 Author: Guenter Roeck <linux@roeck-us.net>
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.
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.
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.
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