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Based on kernel version 3.16. Page generated on 2014-08-06 21:39 EST.

1	Kernel driver adt7410
2	=====================
3	
4	Supported chips:
5	  * Analog Devices ADT7410
6	    Prefix: 'adt7410'
7	    Addresses scanned: None
8	    Datasheet: Publicly available at the Analog Devices website
9	               http://www.analog.com/static/imported-files/data_sheets/ADT7410.pdf
10	  * Analog Devices ADT7420
11	    Prefix: 'adt7420'
12	    Addresses scanned: None
13	    Datasheet: Publicly available at the Analog Devices website
14	               http://www.analog.com/static/imported-files/data_sheets/ADT7420.pdf
15	  * Analog Devices ADT7310
16	    Prefix: 'adt7310'
17	    Addresses scanned: None
18	    Datasheet: Publicly available at the Analog Devices website
19	               http://www.analog.com/static/imported-files/data_sheets/ADT7310.pdf
20	  * Analog Devices ADT7320
21	    Prefix: 'adt7320'
22	    Addresses scanned: None
23	    Datasheet: Publicly available at the Analog Devices website
24	               http://www.analog.com/static/imported-files/data_sheets/ADT7320.pdf
25	
26	Author: Hartmut Knaack <knaack.h@gmx.de>
27	
28	Description
29	-----------
30	
31	The ADT7310/ADT7410 is a temperature sensor with rated temperature range of
32	-55°C to +150°C. It has a high accuracy of +/-0.5°C and can be operated at a
33	resolution of 13 bits (0.0625°C) or 16 bits (0.0078°C). The sensor provides an
34	INT pin to indicate that a minimum or maximum temperature set point has been
35	exceeded, as well as a critical temperature (CT) pin to indicate that the
36	critical temperature set point has been exceeded. Both pins can be set up with a
37	common hysteresis of 0°C - 15°C and a fault queue, ranging from 1 to 4 events.
38	Both pins can individually set to be active-low or active-high, while the whole
39	device can either run in comparator mode or interrupt mode. The ADT7410 supports
40	continuous temperature sampling, as well as sampling one temperature value per
41	second or even just get one sample on demand for power saving. Besides, it can
42	completely power down its ADC, if power management is required.
43	
44	The ADT7320/ADT7420 is register compatible, the only differences being the
45	package, a slightly narrower operating temperature range (-40°C to +150°C), and
46	a better accuracy (0.25°C instead of 0.50°C.)
47	
48	The difference between the ADT7310/ADT7320 and ADT7410/ADT7420 is the control
49	interface, the ADT7310 and ADT7320 use SPI while the ADT7410 and ADT7420 use
50	I2C.
51	
52	Configuration Notes
53	-------------------
54	
55	Since the device uses one hysteresis value, which is an offset to minimum,
56	maximum and critical temperature, it can only be set for temp#_max_hyst.
57	However, temp#_min_hyst and temp#_crit_hyst show their corresponding
58	hysteresis.
59	The device is set to 16 bit resolution and comparator mode.
60	
61	sysfs-Interface
62	---------------
63	
64	temp#_input		- temperature input
65	temp#_min		- temperature minimum setpoint
66	temp#_max		- temperature maximum setpoint
67	temp#_crit		- critical temperature setpoint
68	temp#_min_hyst		- hysteresis for temperature minimum (read-only)
69	temp#_max_hyst		- hysteresis for temperature maximum (read/write)
70	temp#_crit_hyst		- hysteresis for critical temperature (read-only)
71	temp#_min_alarm		- temperature minimum alarm flag
72	temp#_max_alarm		- temperature maximum alarm flag
73	temp#_crit_alarm	- critical temperature alarm flag
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