xRSUNI
Universal PCI & PCI-X serial multi-port boards
Cost-effective solution to add 2, 4 or 8 high performance serial ports, universal bus, standard & low profile for PCI & PCI-X computers
The new range of universal PCI serial multi-port boards from ACKSYS combines high
performance, ease of use, robustness at very competitive prices. This multipurpose range
includes 2, 4 and 8 channel boards for RS232, RS422 or RS485.
PERFORMANCE
Featuring state-of-the-art communication controllers (UARTS), the xRSUNI range reduces
host CPU loading by up to 75% compared with existing PCI boards.
This level of performance is made possible by the full-scale PCI interface integrated in the
UARTS, unlike traditional architectures. The 128 byte per channel FIFO buffer memory means the boards can manage multiple communication lines at much higher rates than traditional boards, and ensures the reliability of received data. A high resolution baud rate generator can handle custom transmission rates besides the standard rates (up to 1.8 Mbps).
UNIVERSALITY
The xRSUNI range offers ease of use in all PCI based computers (PCI & PCI-X) regardless of the bus power supply (+3.3VDC / +5VDC) and whether the form factor is standard profile or low profile MD1).
SECURITY
In RS485 mode, line turn-around is usually software-controlled, a fact which often leads conflicts. The xRSUNI board performs automatic line turn-around to guarantee optimal performance in RS485 mode, independently of the baud rate or operating system.
RELIABILITY
Highly integrated, MTBF > 106 POH, ESD protection 15 KV : 3 key advantages that guarantee
reliability and robustness.
| Number of serial lines: | • 2, 4 or 8 |
| Bus compatibility: | • PCI, PCI-X |
| Power supply: | • Universal +3.3VDC, +5VDC |
| PCI form factor: | • SP |
| RS232: | • Yes |
| RS232 isolated: | • No |
| RS422: | • Yes |
| RS422 isolated: | • Optional |
| RS485: | • Yes |
| RS485 isolated: | • Optional |
| BdC isolated: | • No |
| TTL serial output: | • No |
| TX & RX Fifos: | • 128 |
| ESD protection: | • Yes |
| Interchangeable oscillator: | • No |
| Maximum speed: | • 1.8 Mbps (2) |
Note 1: Standard maximum speed of the UNX-PCI board is 1.8 Mbps (29.4912 Mhz oscillator) and can go up to 3.75 Mbps (optional 60 Mhz oscillator). Other oscillators can be mounted on the board to satisfy communication speed specific requirements.
Note 2: 1.8 Mbps on the xRSPCI boards can be reached in RS422/RS485 modes only, RS232 mode features a 1 Mbps maximum speed.
Note 3: SP means "Standard Profile" for standard form factor PCI bus. LP means "Low Profile MD1" for low profile form factor PCI bus.
