The final regulated output voltages are available at two output terminals to support simultaneous operation of two antenna ports for dual tuners. The outputs for each PWM can be controlled in two ways, full control from I2C using the VTOP1, VTOP2 and VBOT1, VBOT2 bits or set the I2C to the lower range ie 13V/14V and switch to higher range ie 18V/19V with the SELVTOP1, SELVTOP2 pins. All the functions on this IC are controlled via the I2C bus by writing 8 bits words onto the System Registers (SR). The same register can be read back, and four bits per output will report the diagnostic status. Separate enable commands sent on the I2C bus provide independent standby mode control for each PWM and linear combination, disabling the output into shutdown mode. Each output channel is capable of providing 750mA of continuous current. The overcurrent limit can be digitally programmed.