1Kernel driver lm95245
2==================
3
4Supported chips:
5  * TI LM95235
6    Addresses scanned: I2C 0x18, 0x29, 0x4c
7    Datasheet: Publicly available at the TI website
8               http://www.ti.com/lit/ds/symlink/lm95235.pdf
9  * TI / National Semiconductor LM95245
10    Addresses scanned: I2C 0x18, 0x19, 0x29, 0x4c, 0x4d
11    Datasheet: Publicly available at the TI website
12               http://www.ti.com/lit/ds/symlink/lm95245.pdf
13
14
15Author: Alexander Stein <alexander.stein@systec-electronic.com>
16
17Description
18-----------
19
20LM95235 and LM95245 are 11-bit digital temperature sensors with a 2-wire System
21Management Bus (SMBus) interface and TruTherm technology that can monitor
22the temperature of a remote diode as well as its own temperature.
23The chips can be used to very accurately monitor the temperature of
24external devices such as microprocessors.
25
26All temperature values are given in millidegrees Celsius. Local temperature
27is given within a range of -127 to +127.875 degrees. Remote temperatures are
28given within a range of -127 to +255 degrees. Resolution depends on
29temperature input and range.
30
31Each sensor has its own critical limit. Additionally, there is a relative
32hysteresis value common to both critical limits. To make life easier to
33user-space applications, two absolute values are exported, one for each
34channel, but these values are of course linked. Only the local hysteresis
35can be set from user-space, and the same delta applies to the remote
36hysteresis.
37
38The lm95245 driver can change its update interval to a fixed set of values.
39It will round up to the next selectable interval. See the datasheet for exact
40values. Reading sensor values more often will do no harm, but will return
41'old' values.
42