Contec SBC Series - Page 56

6. Software Utilities
PC-686BX(NLX)-LV, PC-686BX(NLX)-LVV
49
CN9 fan sensor read register (28h)
RPM=1.35 x 10
6
/(ReadData x fan_sensor_1_divisor)
VID/Fan register (47h)
7 6 5 4 3 2 1 0
VID0
VID1
VID2
VID3
an_sensor_1_divisor_B0
Fan_sensor_1_divisor_B1
Fan_sensor_2_divisor_B0 (Not used)
Fan_sensor_2_divisor_B1 (Not used)
Bit 7-6: Fan sensor 2 divisor bit 1-0 (Not used)
Bit 5-4: Fan sensor 1 divisor bit 1-0
Bit 3-0: VID<3:0> input
Fan divisor register (Bank 0:5Dh)
7 6 5 4 3 2 1 0
Not used
DIODES1
DIODES2
DIODES3
Not used
Fan_sensor_1_divisor_B2
Fan_sensor_2_divisor_B2 (Not used)
Fan_sensor_3_divisor_B2 (Not used)
Bit 7: Fan sensor 3 divisor bit 3 (Not used)
Bit 6: Fan sensor 2 divisor bit 3 (Not used)
Bit 5: Fan sensor 1 divisor bit 3
Bit 4: Not used
Bit 3: Sensor 3 type selection (Not used)
Bit 2: Sensor 2 type selection (Not used)
Bit 1: Sensor 1 type selection (Set to "0")
Bit 0: Not used
Table 6.4. Fan Divisor Table
Bit 1 Bit 0 Divisor
0 0 1
0 1 2
1 0 4
1 1 8
Table 6.5. VID (Vcore) Table