Driver Channel Off-State Diagnosis with a Shared Timing Counter

Multiple driver channels share a single off-state diagnosis circuit and counter resource, merging what would otherwise be separate dedicated circuits for each channel. This sharing approach maintains fault detection capability across all channels while significantly reducing the total area consumed by diagnosis circuitry.

The off-state diagnosis circuit and counter are designed as universal resources that can serve multiple driver channels simultaneously. The same diagnosis circuit can diagnose different channels at different times, and the counter provides timing windows for multiple channels, making the system multi-functional rather than requiring dedicated single-purpose circuits for each channel.

The counter generates periodic timing windows that enable sequential activation of diagnosis circuits for different driver channels. By organizing diagnosis operations in periodic time slots assigned to different channels, the system achieves efficient multi-channel diagnosis without requiring all diagnosis circuits to operate simultaneously, thus controlling complexity.

The system dynamically allocates the shared diagnosis circuit and counter resources to different driver channels based on timing signals. The diagnosis circuit is activated for specific channels during specific time windows, creating a dynamic time-division multiplexing scheme that enables fast diagnosis across all channels while maintaining manageable circuit complexity through controlled resource sharing.