DI/OT Monitoring Module (MoniMod) documentation

Welcome to the documentation of the DI/OT Monitoring Module (MoniMod). The MoniMod is a PMBus-compatible monitoring module based on a Cortex-M0+ microcontroller, developed as part of the DI/OT project. It can monitor the voltage and current consumption of up to three power rails, system temperature(s), and control up to three fans.

Table of Contents

• Overview
  • Repository Structure
  • Feature Checklist
• PCB
  • Main blocks
    • Linear Regulator
    • SAMD21 uC
    • Fan drivers
    • Analog inputs
  • Connections
  • Radiation qualification
• Firmware
  • PMBus command infrastructure
  • Bootloader
  • PMBus and extended commands overview
  • Detailed list of PMBus and extended commands
    • PAGE
    • QUERY
    • FAN_CONFIG_n_m
    • FAN_COMMAND_n
    • READ_VOUT
    • READ_IOUT
    • READ_TEMPERATURE_N
    • READ_FAN_SPEED_N
    • READ_POUT
    • MFR_ID
    • MFR_MODEL
    • MFR_REVISION
    • MFR_LOCATION
    • MFR_DATE
    • MFR_SERIAL
    • PMBUS_COMMAND_EXT
    • (ext.) WRITTEN_FW_SIZE
    • (ext.) WRITTEN_FW_BLOCK
    • (ext.) WRITTEN_FW_CHKSUM
    • (ext.) BOOT_NEW_FW
    • (ext.) UC_RESET
    • (ext.) TMR_ERROR_CNT
    • (ext.) USE_PEC
    • (ext.) TEMP_CURVE_POINTS
    • (ext.) TEMP_MATRIX_ROW
    • (ext.) TC_ONOFF
  • Fan control PID
  • Temperature control
  • Test firmware
  • Mitigation measures
    • TMR using COAST
    • NOPs and trampolines
    • Watchdog
    • Bling scrubbing
    • Stack protection
  • Toolchains