Specifications

Touch Controllers Reference Guide18
Operating Modes
The operating mode specifies the conditions under which the
controller sends the X, Y touch coordinates (input data packet) to the
host system.
Mode Stream is the default operating mode for all MicroTouch
touchscreen controllers. In Mode Stream, the controller sends a
continuous stream of data packets. The controller sends the data as
long as the touch device (finger or pen) continues to touch the screen.
Because Mode Stream sends touch data continually, it is the most
versatile mode and provides the best response time and overall feel.
MicroTouch recommends that the touchscreen generate an interrupt as
each byte in the data stream arrives. Because touchdown and liftoff
events are specially coded, your software always knows exactly what
the user is doing and can provide instant feedback.
There are several firmware commands that let you select a different
operating mode, such as Mode Point, Mode Down/Up, or Mode
Polled. However, not all touchscreen controllers support these modes.
Each mode specifies a different set of conditions for the transmission
of the touch coordinates. The best operating mode for your
application depends on the type of touch input required. For more
information on these modes, refer to Chapter 2.