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W&T
W W W . W u T . D E
Function
The W&T PC card 13801 equip your PC with two independent RS232 serial interfaces.
Both serial ports are equipped with type 16C550 FIFO UARTs; this makes them functionally compatible with
standard RS232 interfaces, so that the cards can easily be used with your available software. Following a reset, the
type 16550 elements are in standard UART operating mode, so that there is no need to worry about existing
software. The FIFO mode has to be activated explicitly by the software.
DMA operation of the 16550 UARTs is not supported by the hardware of the W&T PC card 13801.
ESD protection
All interface signal lines of the PC card 13801 are protected against electrostatic discharge of up to 15 kV according
to IEC 801-2, level 4.
Configuring the card
The base address and the required interrupt line can be set by DIP switches at the lower edge of the card.
Port 2
Port 1
20V8
SW1
SW2
UART
Port 2
UART
Port 1
XT
AL
PC card 2 x RS232
#13801
