Texas Instruments UCD3138 Technical Reference Manual page 227

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The system is very flexible and powerful. There are 7 analog comparators, 4 fault pins, and 4 digital
comparators. Each DPWM has 4 fault inputs which affect its outputs in different ways. Any combination of
fault detection outputs can be connected to drive any combination of DPWM fault inputs.
Here are three examples:
1. Many fault outputs mapped to a single fault input - An analog comparator in charge of over voltage
protection, a digital comparator in charge of over current protection and an external digital fault pin can
be all mapped to a fault-A signal connected to a single DPWM fault input and shut down DPWM1-A.
2. Single fault output mapped to many fault inputs inside many DPWM modules - An analog comparator
in charge of over current protection can be mapped to all DPWM-0 through DPWM-3 through several
fault modules.
3. Many fault sources mapped to a many fault modules inside many DPWM modules. A flexible
combination of both above mentioned alternatives.
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Topic
6.1 Analog Comparator Configuration
6.2 Analog Comparator Ramp
6.3 Digital Comparator Configuration
6.4 Fault Pin Configuration
6.5 Analog Peak Current
6.6 Fault Status Registers
6.7 Fault Mux Control Registers
6.8 DPWM Fault Action
6.9 IDE / DCM Detection Control
6.10 Oscillator Failure Detection
6.11 Fault Mux Registers Reference
SNIU028A - February 2016 - Revised April 2016
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Fault Mux