11 touch interface, Touch interface, Ktt30/mitx users guide – Kontron KTT30-mITX User Manual
Page 30
KTD-N0857-A
Page 27
Pin Connectors
KTT30/mITX Users Guide
8.11
Touch Interface
By default the touch screen interface supports an I
2
C
TM
connection. Alternative a stuffing option allows the
usage of a standard SPI
TM
port. The complete interface is 3.3V compatible.
The touch screen interface is available through the connector J30 (12 pins).
Header
Pin
Signal
Description
Type
1
AVCC3
1)
Analog power +3.3V
PWR
2
AVCC3
1)
Analog power +3.3V
PWR
3
AVCC3
1)
Analog power +3.3V
PWR
4
VCC3
1)
Digital power +3.3V
PWR
5
SPI_CLK
SPI
TM
clock (alternative)
O-3.3
6
SPI_CS#
SPI
TM
slave select (alternative)
O-3.3
7
TS_IRQ#
Interrupt (optional)
I-3.3
8
I2C_SDA
SPI_MOSI
I
2
C
TM
data
SPI
TM
master output (alternative)
IO-3.3
O-3.3
9
I2C_SCL
SPI_MISO
I
2
C
TM
clock
SPI
TM
master input (alternative)
IO-3.3
I-3.3
10
TS_RST#
Reset (optional)
O-3.3
11
GND
Ground
PWR
12
VCC1
1)
Digital power +1.8V
PWR
Note:
1)
To protect the external power lines of peripheral devices make sure that
- the wires have the right diameter to withstand the maximum available current.
- to enclosure of the peripheral device fulfills the fire-protecting conditions of IEC/EN 60950.
1