Specifications

Command Descriptions 91
7 Reserved Always 1. Reserved for Z-axis Disable.
The Mode2 byte has the following bit positions:
Bit Function Description
0 Reserved
1 Trim Mode If 1, Trim Mode is enabled. Touches outside
the calibration points will have their
coordinates adjusted to the edge of the
calibrated area. This mode effectively
expands all touch zones on the edge of the
image to include the associated overscan
area. Trim Mode requires Range Checking
Mode to be enabled (bit 6 of Mode1 above).
2 Calibration Mode If 1, Calibration Mode is enabled. Touch
coordinates will be mapped to the display
image using the calibration points acquired at
the edges of the image. Coordinates will be
scaled 0-4095 by default within the calibrated
area unless Scaling Mode (bit 3 below) is
also enabled and other Scaling Points
defined. Coordinates will be scaled beyond
these ranges if a touch is outside the
calibration points and Trim Mode is disabled.
Calibration Points must set with the
Calibration command.
3 Scaling Mode If 1, Scaling Mode is enabled. Touch
coordinates will be scaled to the signed
ranges specified with the Scaling command. If
Scaling Mode is disabled, coordinates will be
scaled 0-4095 by default. Scaling Mode is
typically used with Calibration Mode. Scaling
Mode may be used without Calibration Mode
to emulate coordinate ranges returned by
other controllers.
4 Reserved
5 Reserved
6 Tracking Mode If 1, Tracking Mode is enabled. In Tracking
Mode, Stream touches which repeat the same
coordinate will not be transmitted to the host.
This mode is only useful if coordinate scaling