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Diffstat (limited to 'Documentation/hwmon/lm85')
| -rw-r--r-- | Documentation/hwmon/lm85 | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/hwmon/lm85 b/Documentation/hwmon/lm85 index 83cd5bb..239258a 100644 --- a/Documentation/hwmon/lm85 +++ b/Documentation/hwmon/lm85 @@ -101,6 +101,13 @@ Devices has confirmed this "bug". The ADT7463 is reported to work as described in the documentation. The current lm85 driver does not show the offset register. +The ADT7468 has a high-frequency PWM mode, where all PWM outputs are +driven by a 22.5 kHz clock. This is a global mode, not per-PWM output, +which means that setting any PWM frequency above 11.3 kHz will switch +all 3 PWM outputs to a 22.5 kHz frequency. Conversely, setting any PWM +frequency below 11.3 kHz will switch all 3 PWM outputs to a frequency +between 10 and 100 Hz, which can then be tuned separately. + See the vendor datasheets for more information. There is application note from National (AN-1260) with some additional information about the LM85. The Analog Devices datasheet is very detailed and describes a procedure for |
