2.3.1 ADDR Pin Configuration:

The ADDR pin is resistor-programmed to assign unique I²C/PMBus addresses to each module on the shared communication bus.

• U1 Host: ADDR (pin 12) connected to GND through R12 = 0Ω
  • I²C address: 0x10
  • PMBus address: 0x70
• U2 Client: ADDR (pin 12) connected to GND through R34 = 1.87 kΩ
  • I²C address: 0x12
  • PMBus address: 0x72

This allows both modules to operate on the same bus while maintaining independent device addressing. Refer to the MCPF1525M06 datasheet, Table 2-2 (I²C/PMBus Address Offset Resistors), for supported ADDR resistor settings.