AR1100 Datasheet, PDF (15/58 Pages) Microchip Technology – AR1100 Resistive USB and RS-232 Touch Screen Controller

AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER
TABLE 4-2: TOUCH REPORT FORMAT – GENERIC
BYTE
BIT
7
6
5
4
3
2
1
0
1
1
R
R
R
R
R
R
P
2
0
X6
X5
X4
X3
X2
X1
X0
3
0
0
0
X11
X10
X9
X8
X7
4
0
Y6
Y5
Y4
Y3
Y2
Y1
Y0
5
0
0
0
Y11
Y10
Y9
Y8
Y7
P
Pen state - 1: Pen down - 0: Pen up
R
(Reserved)
X
X ordinate of touch location (12 bits)
Y
Y ordinate of touch location (12 bits)
Up to three touch reports are sent in response to each
touch ‘event’ (events are defined as: pen down, pen up
and pen move). A behavior is defined per event by the
‘Touch mode’ configuration parameter and described in
Table 4-3 below.
TABLE 4-3: TOUCH MODE OPTIONS – GENERIC
MODE
SUPPORTED EVENT
PD
PU
PM
BEHAVIOR
0
1
2
3
4
5
PD
PU
PM
Report
X
X
X
X
X
X
X
X
X
X
X
X
Pen down
Pen up
Pen move
Touch report
X
NO REPORT
X
REPORT (P=0)
X
REPORT (P=1)
X
REPORT (P=1), REPORT (P=0)
REPORT (P=0), REPORT (P=1), REPORT (P=0)
REPORT (P=0), REPORT (P=1)
 2011 Microchip Technology Inc.
DS41606B-page 15