The System Monitor (SYSMON) provides analog-to-digital converter (ADC) functionality for monitoring internal supplies, temperature, and up to 17 channels that extend outside the device for monitoring the larger system. The SYSMON provides many features to aid in managing conversion results, such as averaging, maximum/minimum interrupts, and alarms based on configurable thresholds. Features include:
- 10-bit 200 kSPS ADC designed with a consistent sample rate of 8 kSPS regardless of the number of channels being sampled.
- Scaled ADC architecture allows up to 160 channels that can be sampled at 8 kSPS.
- Internal and external interfaces with the SYSMON:
- Register access using the platform management controller (PMC)
- JTAG access using the PMC
- External I2C/PMBus interface
- Interrupt-based alarms with configurable upper and lower thresholds
- Temperature alarm features both window and hysteresis alarm mode
- Over-temperature shutdown with configurable upper and lower thresholds
- Dedicated registers to hold maximum and minimum results for each channel being monitored
- Averaging available on all channels and sensors
- Self-calibrating ADC
- Both unipolar and bipolar monitoring of external inputs