I2C-RPT

Features

• I2C Hub / Repeater / Replicator / Multiplexer / De-multiplexer
• Four I2C Ports
• Host port Controlled via I2C
• PCA9544A IC Multiple vendors
• 3.3V or 5V host operation
• 3.3V or 5V slave ports operation
• Voltage translation between the ports
• Example: A Raspberry PI which runs 3.3V can control an I2C device which runs at 5V
• Interrupt line on each channel and host
• 100KHz/400KHz operation
• On-board termination resistors
• 49x49mm form factor
• 4 solid 4-40 mounting holes
• Arduino driver and example code
• Raspberry Pi example code

Drivers/Example Code

• GitHub Repo - Arduino Driver code
• Github Repo - Example code

Schematic

• Schematic

Testing

• Arduino Based Test Station
• Connects directly to I2C port on the BLACK-PILL-HUB
  • I2C address offset = 0x0
  • Built in I2C mux on BLACK-PILL-HUB is set to offset=0x1 so it does not conflict
  • Uses 4x of I2CIO-8 cards
• ODAS Tester Github Repo

Assembly Sheet

• I2C-RPT-01 Assembly Sheet