3-14
AIMB-253
Mainboard
Onboard Serial Port 1 / 2 / 3 / 4 / 5
Select an address for Serial Port 1/2/3/4/5.
Serial Port 1 / 2 / 3 / 4 / 5 Use IRQ
Select a corresponding interrupt for Serial Port 1/2/3/4/5.
Serial Port 2 / 3 Mode
These settings specify the transmission mode of the Serial Port 2 & 3.
RS-422 defines a Balanced (differential) interface, specifying a single, unidirec
-
tional driver with multiple receivers (up to 32). RS-422 will support Point-to-Point,
Multi-Drop circuits, but not Multi-Point.
RS-485 defines a Balanced (differential) interface, specifying bidirectional, half-
duplex data transmission. Up to 32 transmitters and 32 receivers may be inter-
connected in any combination, including one driver and multiple receivers (multi-
drop), or one receiver and multiple drivers.
