ADM00902 Demonstration Board for EMC2103 User’s Guide
DS50002905A-page 30
2019 Microchip Technology Inc.
Note that the TCRIT values can only be changed once after power-up.
When starting the board with the SHDN_SEL jumper on a position that loads the
settings from EEPROM (15k, 22k, 33k and open positions), this one-time TCRIT write
operation will automatically be exhausted and the GUI will not update the values any
more, nor be able to write other values to the EEPROM.
When starting the board with the SHDN_SEL jumper on a position that doesn’t load the
settings from EEPROM (4.7k, 6.8k, 10k positions), the first TCRIT update from the GUI
will be successful and only that value will be able to be saved to the EEPROM. Using
the Load Settings command from the GUI will not replace the TCRIT values, allowing
for the one-time manual write operation (any entered value that is different from the
default of 100 will use up the one-time write).
3.6.5
Fan Driver Settings
The
Fan Driver
tab (
) provides easy access to the EMC2103-4 device’s
settings and readings.
Each section of the
Fan Driver
tab is highlighted in
by a red rectangle and
a number, with each corresponding number being described below.
FIGURE 3-19:
Fan Driver
Tab.
• The PWM Settings section (
1
) contains all PWM-related settings for the fan driver
channel.
• The General Configuration sections (
2
and
3
) give access to the rest of the
driver’s settings.
• The Fan Related Settings section (
4
) contains the drive and RPM/TACH options
needed to properly drive the connected fan. The “Min RPM” field is connected to
the “Valid TACH Count” field; if either value is changed, the other is updated as
well. The same is true for the “Target RPM” field and the “TACH Target” field.
• The General Settings section (
5
) allows setting the pushed temperatures, toggling
the alert settings and mask fan options for the fan spin and stall.
