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PCI Express 4-Port Industrial Serial I/O Card User Guide
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Specifications
The tables below show the specifications of PCI Express 4-Port Industrial Serial I/O cards
General
Bus
PCI Express; Single-Lane (x1)
Chipset
EXAR XR17V354
Interface
RS-422/485
Plug & Play
Supported
IRQ &IO Address
Assigned by system BIOS
Serial Port
Serial Ports Number
4-Port
RS-422 Signals
TxD-, TxD+, RxD+, RxD-, GND, RTS-, RTS+, CTS+,CTS-
RS-485 Signals
TxD-, TxD+, RxD+, RxD- (4 wire), data- , data+ (2 wire)
Max. Bitrates
921,600 bps
Serial Configuration
Data bits : 5,6,7,8
Parity : None, Odd, Even, Mark , Space
Stop bits : 1, 1.5 , 2
UART FIFO Buffer size
Each port with 256 Bytes FIFO for transmit and receive