The Pattern Generator on the Digital Discovery has up to 16 channels and a 100 MS/s sample rate. Users can chose to add any combination of single or bus patterns. Single patterns include a constant value, clock signal, pulse, and random data. Bus patterns include constant values, clock signals, pulse signals, random data, numbers, and a variety of counters or walking 1 or 0. Users can also choose to create a custom pattern. A pattern of ROM logic can be added for implementing user-defined Boolean functions and state machines. The output logic level can be selected from between 1.2V and 3.3V, and the output drive can be selected from between 2mA and 16mA.