DE1-SoC-MTL
2
User Manual
18
www.terasic.com
December 18, 2014
Figure 3-4 Signaltap II Waveform for Multi-Touch IP
Table 3-4 Definition of Terasic Multi-touch IP Signals
Pin Name
Direction
Description
iCLK
Input
Connect to 50MHz clock
iRSTN
Input
Connect to system reset signal
INT_n
Input
Connect to interrupt pin of touch IC
oREADY
Output
Triggered when the data of following six
outputs are valid
oREG_X1
Output
10-bit X coordinate of first touch point
oREG_Y1
Output
9-bit Y coordinate of first touch point
oREG_X2
Output
10-bit X coordinate of second touch point
oREG_Y2
Output
9-bit Y coordinate of second touch point
oREG_X3
Output
10-bit X coordinate of first touch point
oREG_Y3
Output
9-bit Y coordinate of second touch point
oREG_X4
Output
10-bit X coordinate of first touch point
oREG_Y4
Output
9-bit Y coordinate of second touch point
oREG_X5
Output
10-bit X coordinate of first touch point
oREG_Y5
Output
9-bit Y coordinate of second touch point
oREG_TOUCH_COUNT Output
2-bit touch count. Valid value is 0, 1, or 2.
oREG_GESTURE
Output
8-bit gesture ID (See
Table 3-5)
I2C_SCLK
Output
Connect to I2C clock pin of touch IC
I2C_SDAT
Inout
Connect to I2C data pin of touch IC
The gestures and IDs supported are shown in
Table 3-5
.
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