User manual
DIGITAL-LOGIC AG    MSM800SEV/SEL/BEV/XEV/XEL Detailed Manual V1.7 
  78 
X44  IrDA Connector 
Pin  Signal 
1  VCC 
2  IRTX 
3  IRRX 
4  GND 
BIOS settings: 
You must enable the UART A of the GeodeLX in the BIOS setup: 
  F1Mother board device configurationI/O configuration: 
  UART port A = enabled 
  UART mode = SIR/CIR 
Attention! 
Never  set  the  UART  A  mode  to  “Serial-16550  compatible”  or  “Extended”  when  an  IrDA  diode  is 
connected to the X44 or the diode will be destroyed! 
X50  USB 1 Connector 
Pin  Signal 
1  VCC 
2  USB-P0- 
3  USB-P0+ 
4  GND 
X51  USB 2 Connector 
Pin  Signal 
1  VCC 
2  USB-P0- 
3  USB-P0+ 
4  GND 
X52  USB 3 Connector 
Pin  Signal 
1  VCC 
2  USB-P0- 
3  USB-P0+ 
4  GND 
X53  USB 4 Connector 
Pin  Signal 
1  VCC 
2  USB-P0- 
3  USB-P0+ 
4  GND 
Pin 1 
VCC 
Pin 2 
USB-P0- 
Pin 3 
USB-P0+ 
Pin 4 
GND 










