Guide

Since each of the channels on the BD-LLC are bi-directional any of the four SPI lines can go through any
of the BD-LLC’s four channels.
Using the BD-LLC for I2C
I2C is the communication standard where the BD-LLC really shines, because it requires that both data
and clock signals – SDA and SCL – be bi-directional. Each of those lines can be passed through any of
the BD-LLC’s level-shifting channels.
For this example, let’s keep using the ADXL345 breakout but instead swap over to the I2C interface. We
can even add another I2C device…how about the L3G4200D Gyroscope Breakout. Since I2C is only a
two-wire interface, we have room on the BD-LLC to fit in a couple of extra signals, like the interrupt
outputs from each board