Systems and methods for communication on a series connection

A system comprising:

• a master device having a master circuit, the master circuit enabling the master device to communicate with a plurality of slave devices on a series connection;
• and
• the plurality of slave devices, the slave devices having slave circuits;
• wherein the master circuit enables the master device to send a read command to the slave devices by transmitting first signals on the series connection in a forward direction, the first signals representing a read bit, a unit address of a given slave device, and a register address of the given slave device;
• wherein a slave circuit of the given slave device enables the given slave device to receive the read command after detecting the unit address of the given slave device on the series connection;
• and
• wherein the slave circuit of the given slave device enables the given slave device to transmit second signals on the series connection in a reverse direction by pulling the voltage of the series connection from low to high, the second signals representing data in a register having the register address.