AR1100 Datasheet, PDF (19/58 Pages) Microchip Technology – AR1100 Resistive USB and RS-232 Touch Screen Controller

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER
4.2.2.4 Mode Capabilities
Only two of the four AR1100 communication modes,
UART and HID-GENERIC, support ‘low-level’
operations such as:
1. Configuration
2. Calibration
3. Boot loading (field re-programming)
The remaining two communication modes,
HID-MOUSE and HID-DIGITIZER, only support output
of TOUCH REPORT(s) and only receive (respond to)
mode change command(s). They can be supported by
intrinsic operating system driver(s). To configure, cali-
brate and/or reprogram these two devices, the host
must cause them to re-enumerate as HID-GENERIC.
Once the low-level operations are complete, the host
can then re-configure back to the desired device.
 2011 Microchip Technology Inc.
DS41606B-page 19