Changeset 3007 for lm-sensors/trunk/doc/chips/lm80
- Timestamp:
- 05/24/05 23:26:22 (7 years ago)
- Files:
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- 1 modified
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lm-sensors/trunk/doc/chips/lm80 (modified) (3 diffs)
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lm-sensors/trunk/doc/chips/lm80
r3000 r3007 5 5 6 6 Supported chips: 7 * National Semiconductor sLM808 Prefix `lm80'9 Addresses scanned: I2C 0x20 - 0x2f (inclusive)7 * National Semiconductor LM80 8 Prefix: 'lm80' 9 Addresses scanned: I2C 0x20 - 0x2f 10 10 11 11 Author: Frodo Looijaard <frodol@dds.nl> and Philip Edelbrock … … 34 34 ----------- 35 35 36 This driver implements support for the National Semiconductor sLM80.36 This driver implements support for the National Semiconductor LM80. 37 37 It is descibed as a `Serial Interface ACPI-Compatible Microprocessor 38 38 System Hardware Monitor'. 39 39 40 The LM80 implements one temperature sensor, two FANrotation speed sensors,40 The LM80 implements one temperature sensor, two fan rotation speed sensors, 41 41 seven voltage sensors, alarms, and some miscellaneous stuff. 42 42 … … 50 50 0.0625 degrees; the limits have a resolution of 1 degree. 51 51 52 F ANrotation speeds are reported in RPM (rotations per minute). An alarm is53 triggered if the rotation speed has dropped below a programmable limit. F AN52 Fan rotation speeds are reported in RPM (rotations per minute). An alarm is 53 triggered if the rotation speed has dropped below a programmable limit. Fan 54 54 readings can be divided by a programmable divider (1, 2, 4 or 8) to give 55 the readings more range or accuracy. This is important because some FANs 56 report only one 'tick' each rotation, while others report two - making 57 all readings twice as high. Not all RPM values can accurately be represented, 58 so some rounding is done. With a divider of 2, the lowest representable 59 value is around 2600 RPM. 55 the readings more range or accuracy. Not all RPM values can accurately be 56 represented, so some rounding is done. With a divider of 2, the lowest 57 representable value is around 2600 RPM. 60 58 61 59 Voltage ensors (also known as IN sensors) report their values in volts.
