UCD90320
www.ti.com.cn
ZHCSFI3B –AUGUST 2016–REVISED MAY 2019
ON or OFF accordingly regardless of the timeout action. If the sequence ON or OFF timeout value is set to 0,
the rails are sequenced ON or OFF immediately. The fault pins do not pull the fault bus low. LGPOs affected
by these events return to the original states.
•
Configured as Fault Pin GPI fault enable functionality must be set to enable this feature. When set, if there
is no fault on a fault bus. The FAULT pin is digital input pin and it monitors the fault bus. When one or more
UCD90329 devices detect a rail fault, the corresponding FAULT pin is turned into active driven low state,
pulling down the fault bus voltage and informing all other UCD90320 devices of the corresponding fault. This
behavior allows a coordinated action to be taken across multiple devices. After the fault is cleared, the state
of the FAULT pin reverts to that of an input pin.(See also the Cascading Multiple Devices section).
Figure 12. GPI Configuration Dropdown Window
(Hardware Configuration ► Monitor and GPIO Pins Assignment)
Copyright © 2016–2019, Texas Instruments Incorporated
19
TI [ TEXAS INSTRUMENTS ]
