Kontron KTT30-mITX - Manual (Page 25)

KTD-N0857-A Page 22 Pin Connectors
KTT30/mITX Users Guide
8.5 Serial Console
Most operating systems have a defined serial console. The KTT30/mITX board uses the first serial port
(UARTA/ UART1) on connector J3 for this purpose. Normally the serial console needs only three signal lines
(TXD, RXD and GND). The serial port is assigned to the environment variables
stdin, stdout and stderr. If
you use U-Boot as bootloader you can interact with U-Boot via a USB keyboard and a standard terminal
program on a desktop computer. The following overview shows the default serial settings:

Baudrate 115 kBaud

Data bits 8

Stop bits 1

Parity No
8.6 Digital Connectors (S/PDIF)
The digital audio interface is available through the connectors J26 and J31 (2 pins).
8.7 Headphone Connector
The headphone interface is available through the connector J32 (4 pins).
Header Pin Signal Type
1 GND PWR
2 HPOUT-L AO
3 GND PWR
4 HPOUT-R AO
Header Pin J26 J31 Type
1 SPDIF_OUT SPDIF_IN O resp. I (J31)-3.3
2 GND GND PWR
1