MLT2 User Manual
17
www.terasic.com
April 12, 2016
The purpose of signals for this IP is described in
Table 3-4.
The IP requires a 50 MHz signal as a
reference clock to the
iCLK
pin and system reset signal to the
iRSTN
.
INT_n
, The signals of
I2C_SCLK
, and
I2C_SDAT
pins should be connected to the MTL_TOUCH_INT_n,
MTL_TOUCH_I2C_SCL, and MTL_TOUCH_I2C_SDA signals in the 2x20 GPIO header,
respectively.
When touch activity occurs, the control application should check whether the value of
oREG_GESTURE matches a pre-defined gesture ID defined in
Table 3-4
and the relative X/Y
coordinates can be derived from oREG_X and oREG_Y.
Figure 3-1
shows the signaltap II
waveform of the IP.
When the
oREADY
rises, it indicates touch activity, and the associated
information can be collected from the oREG_X1~ oREG_X5, oREG_Y1~ oREG_Y5,
oREG_TOUCH_COUNT, and oREG_GESTURE pins.
Figure 3-4 Signaltap II Waveform for Multi-Touch IP
Summary of Contents for MTL2
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