SCH3112I-NE SMSC [SMSC Corporation], SCH3112I-NE Datasheet - Page 225

• Manufacturer Part Number: SCH3112I-NE
• Description: LPC IO with 8042 KBC, Reset Generation, HWM and Multiple Serial Ports
• Manufacturer: SMSC [SMSC Corporation]

LPC IO with 8042 KBC, Reset Generation, HWM and Multiple Serial Ports
Datasheet
SMSC SCH311X
23.13.4.3
PWRGD_PS
PWM Clamp
START
Spinup
TRDY
Timer
PWM
VCC
VTR
mode. (See
the clamp will be released and the fans will be forced into spinup.
Note: If the two second PWM Clamping period expires before TRDY is asserted, the PWMs will be
Timing Diagrams for PWM Clamp and Forced Spinup Operation
Case 1: Spinup Operation Following PWRGD_PS Active after VTR POR.
set to Full On.
PWM Clamp on page
START bit and TRDY go high during 2 sec delay.
208) This is a noise reduction feature. Once the TRDY bit goes high
2 seconds
DATASHEET
209
Spinup
Time
Duty Cycle
Rev 0.2 (09-28-04)