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Short-Circuit Protection and Fault-Reporting Circuitry
3-2
3.1 Short-Circuit Protection and Fault-Reporting Circuitry
The TAS5121 is a self-protecting device that provides device fault reporting
(including high-temperature protection and short-circuit protection). The
TAS5121 is configured in back-end auto-recovery mode and, therefore, resets
automatically after all errors (M1, M2, and M3 is set low). This means that the
device restarts itself after an error occasion and reports shortly through SD1
and SD2 error signals.
The shutdown report signals are separated into two wires, SD1
and SD2. SD1
covers the primary information channels (front channels and center), where
the SD2
covers the secondary information channels (rear channels,
surround/line out channels, and subwoofer). Therefore, a microprocessor can
react differently on errors depending on primary or secondary channels faults,
e.g., lowering the output level or shutting down the secondary channels on
continues error reporting from one of those, where the primary channels
continue.