w83l784r Winbond Electronics Corp America, w83l784r Datasheet - Page 41

• Manufacturer Part Number: w83l784r
• Description: Winbond H/w Monitoring Ic
• Manufacturer: Winbond Electronics Corp America

7.32 FAN2 Duty Cycle Select Register-- Index 83h
Power on default [7:0] = 1111,1111 b
7.33 FAN Configuration Register-- Index 84h
Power on default [7:0] = 0000,0000 b
7-0
7-2
5-4
3-2
Bit
Bit
1
Confidential, For Beta-site Only
F2_DC[7:0]
Reserved
FAN2_MODE
FAN1_MODE
FAN2_OB
N a m e
N a m e
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Fan 2 Duty Cycle. This 8-bit register determines the
number of input clock cycles, out of 256-cycle period,
during which the PWM output is high. During smart fan
2 control mode, read this register will return smart fan
duty cycle.
00h: PWM output is always logical Low.
FFh: PWM output is always logical High.
XXh:
XX/256*100% during one cycle.
-40 -
Reserved
FAN 2 PWM Control Mode.
00 - Manual PWM Control Mode. (Default)
01 - Thermal Cruise mode.
10 - Fan Speed Cruise Mode.
11 - Reserved.
FAN 1 PWM Control Mode.
00 - Manual PWM Control Mode. (Default)
01 - Thermal Cruise mode.
10 - Fan Speed Cruise Mode.
11 - Reserved.
Enable Fan 2 as Output Buffer. Set to 1, FANPWM1
can drive logical high or logical low. Default Pin 4
(FANPWM) is open-drain.
PWM
output
Description
Description
logical
Publication Release Date: Sep.
High
W83L784R
Preliminary
percentage
Revision 0.54
1999
is