Rainbow Electronics LM93 - Manual (Page 37)

16.0 Registers
(Continued)
Lock Register Name Address Default Description
LIMIT REGISTERS
P2_PROCHOT User Limit B1h FFh User settable limit for P2_PROCHOT
Vccp1 Limit Offsets B2h 17h VID offset values for window comparator for CPU1 Vccp
(AD_IN7)
Vccp2 Limit Offsets B3h 17h VID offset values for window comparator for CPU2 Vccp
(AD_IN8)
FAN Tach 1 Limit LSB B4h FCh FAN Tach 1 Limit LSB
FAN Tach 1 Limit MSB B5h FFh FAN Tach 1 Limit MSB
FAN Tach 2 Limit LSB B6h FCh FAN Tach 2 Limit LSB
FAN Tach 2 Limit MSB B7h FFh FAN Tach 2 Limit MSB
FAN Tach 3 Limit LSB B8h FCh FAN Tach 3 Limit LSB
FAN Tach 3 Limit MSB B9h FFh FAN Tach 3 Limit MSB
FAN Tach 4 Limit LSB BAh FCh FAN Tach 4 Limit LSB
FAN Tach 4 Limit MSB BBh FFh FAN Tach 4 Limit MSB
SETUP REGISTERS
x Special Function Control 1 BCh 00h Controls the hysteresis for voltage limit comparisons. Also
selects filtered or unfiltered temperature usage for temperature
limit comparisons and fan control.
x Special Function Control 2 BDh 00h Enables smart tach detection. Also selects 0.5˚C or 1.0˚C
resolution for fan control.
x GPI / VID Level Control BEh 00h Control the input threshold levels for the P1_VIDx, P2_VIDx
and GPIO_x inputs.
x PWM Ramp Control BFh 00h Controls the ramp rate of the PWM duty cycle when
VRDx_HOT is asserted, as well as the ramp rate when
PROCHOT exceeds the user threshold.
x Fan Boost Hysteresis (Zones 1/2) C0h 44h Fan Boost Hysteresis for zones 1 and 2
x Fan Boost Hysteresis (Zones 3/4) C1h 44h Fan Boost Hysteresis for zones 3 and 4
x Zones 1/2 Spike Smoothing Control C2h 00h Configures Spike Smoothing for zones 1 and 2
x Zones 1/2 MinPWM and Hysteresis C3h N/D Controls MinPWM and hysteresis setting for zones 1 and 2
auto-fan control
x Zones 3/4 MinPWM and Hysteresis C4h N/D Controls MinPWM and hysteresis setting for zones 3 and 4
auto-fan control
GPO C5h 00h Controls the output state of the GPIO pins
PROCHOT Override C6h 00h Allows manual assertion of P1_PROCHOT or P2_PROCHOT
PROCHOT Time Interval C7h 11h Configures the time window over which the PROCHOT inputs
are measured
x PWM1 Control 1 C8h 0Fh Controls PWM control source bindings.
x PWM1 Control 2 C9h 00h Controls PWM override and output polarity
x PWM1 Control 3 CAh 00h Controls PWM spin-up duration and duty cycle
x PWM1 Control 4 CBh 00h Frequency control for PWM1.
x PWM2 Control 1 CCh 0Fh Controls PWM control source bindings.
x PWM2 Control 2 CDh 00h Controls PWM override and output polarity
x PWM2 Control 3 CEh 00h Controls PWM spin-up duration and duty cycle
x Special FunctionPWM2 Control 4 CFh 00h Frequency control for PWM2
LM93
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