17.4.2 Quadrature Count Mode

In this mode, the QEA/EXTCNT and QEB/DIR/GATE inputs are decoded to generate count pulses and direction information to control the POSxCNT and VELxCNT registers. The INDXxCNT register counts when a valid edge is detected on the INDXx input. The timing diagram of the Quadrature Count mode operation is illustrated by the Figure 17-1.