Lines Matching full:fan
54 temperature, two fan speeds and chassis intrusion. Measured values can
76 with independent fan speed measurement cycles counting alternating rising
77 edges of the fan tacho inputs.
79 DS1780 measurement cycle is about once per second including fan speed.
81 LM81 measurement cycle is about once per 400ms including fan speed.
93 Fan Speed
95 Two fan tacho inputs are provided, the ADM9240 gates an internal 22.5kHz
96 clock via a divider to an 8-bit counter. Fan speed (rpm) is calculated by:
100 Automatic fan clock divider
105 - fan clock divider not changed
106 - auto fan clock adjuster enabled for valid fan speed reading
111 - fan clock divider set to max
114 - low speed alarm will be asserted if fan speed is
116 - auto fan clock adjuster disabled
118 * User sets reasonable fan speed
121 - fan clock divider set to suit fan_min
122 - auto fan clock adjuster enabled: adjusts fan_min
124 * User sets unreasonably high low fan speed limit
128 - auto fan clock adjuster enabled: adjusts fan_min
130 * fan speed may be displayed as zero until the auto fan clock divider
131 adjuster brings fan speed clock divider back into chip measurement
137 fan speed amplifier circuit. The analog output is set to maximum value on
192 6 FAN1_Error fan low limit exceeded
193 7 FAN2_Error fan low limit exceeded