EMC6D100-DK SMSC [SMSC Corporation], EMC6D100-DK Datasheet - Page 71

• Manufacturer Part Number: EMC6D100-DK
• Description: ENVIRONMENTAL MONITORING AND CONTROL DEVICE WITH AUTOMATIC FAN CAPABILITY
• Manufacturer: SMSC [SMSC Corporation]

Environmental Monitoring and Control Device
Datasheet
Chapter 10 Timing Diagrams
10.1
10.1.1 WITH SYNCHRONIZATION
10.1.2 WITHOUT SYNCHRONIZATION
SMSC EMC6D100/EMC6D101
NAME
t1
t2
t3
t4
PWM Outputs
The following sections show the timing for the PWM[1:3] outputs.
Note 1: This value is programmable by the PWM frequency bits located in the FRFx registers
Note 2: The PWM High Time is based on a percentage of the total PWM period (min=0/256*T
=255/256*T
FANx
FANx
PWM Period (Note 1)
PWM High Time (Note 2)
Sync Pulse Period
Sync Pulse High Time
PWM
). During Spin-up the PWM High Time can reach a 100% or Full On. (T
FIGURE 10.1 - PWMX OUTPUT TIMING, SYNC_MSK=0
FIGURE 10.2 - PWMX OUTPUT TIMING, SYNC_MSK=1
DESCRIPTION
Table 10.1 - Timing for PWM[1:3] outputs
t2
t2
DATASHEET
t1
t1
t3
Page 71
t4
MIN
11.4
0
711.11
TYP
44.44
MAX
90.9
99.6
PWM
UNITS
= t1)
msec
usec
usec
%
Rev. 09-09-04
PWM
, max