3.4.10.3 USB-to-I²C bridge

One of the options to access the power measurement data from the PAC1934 device is via the USB-to-I²C bridge MCP2221A.

When using this device to access the PAC1934, make sure that the J6 and J7 headers have jumpers placed in the corresponding position. By default, the USB-to-I²C device is selected.

Connect the device to a computer using a USB-microAB cable plugged in the J5 connector.

Beforehand, the required MCP2221A device drivers and PAC1934 demo application should be installed.

Additionally, the MCP2221A can be used as a serial debug port instead of the dedicated FTDI header J35. To enable this feature, populate the R16 and R18 resistors.

For more details about the MCP2221A device, refer to the product web page.