Kontron KTAM3874-pITX - Manual (Page 28)

KTD-S0051-D Page 24 Serial Interface
KTAM3874/pITX User's Guide
B
A
Y
Z
H
a
lf D
u
p
lex
RS-
485
1
Rx
Tx
J1300
ISL3330
1 1
1 1
1
0
GP3[16] GP3[17] RTS Mode
Receive
Transmit
10.5 Serial Console
Most operating systems have a defined serial console. The KTAM3874/pITX board uses the first serial port
(
UART0) on connector J1304 for this purpose. 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 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
For development purposes it can be useful to download U-Boot via the serial interface. This feature is
enabled if you set a jumper on pin header J1101. For further information see the Software Guide chapter
'Bootloader Download'.