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5.1.6
SMB Alert
SMBALERT is used to indicate to the HOST about any Faults/Error Conditions.
This line must be connected to +3.3V (referenced to Signal RTN) via a 1.5kΩ pull up resistor.
This Signal is HIGH to indicate that no fault/error is present. If some fault/error occurs, the signal will go LOW.
The Host system must poll multiple supplies after receiving SMBALERT to retrieve fault/warning information.
5.1.7
PMBus Typical Connection
"SIGNAL RETURN" and PMBus signals are isolated from the Output terminals and Senses.
Figure 5–1:
PMBus Typical Connection
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