Description
The GX3904 is an 8-port, cPCI asynchronous communications interface board supporting 4 RS-232 and 4 RS-422 signal levels. The four RS-232 ports offer a full set of data and modem control lines configured for DTE operation. The four RS-422 ports offer differential signaling and support DTE operation. Each RS-422 differential pair is terminated by a 150 Ω parallel resistor. An optional transition cable is available to convert the front panel SCSI connector to 8 DB-9, D-sub connectors.
Features
Support for each port is provided by a 16550 UART which operates at data rates up to 115 K baud. Mapping of PCI interrupts to each of the 8 interrupts associated with each UART is done via on-board programmable routing logic, allowing any UART interrupt to be routed to any of the PCI INTx request lines. The default routing after reset is for all interrupts to be routed to the INTA line.
Software
Standard Windows COM drivers can be used with the GX3904.
Applications
- Automatic Test Equipment (ATE)
- Control of computer peripherals
- Computer to computer interfacing
- Control of industrial equipment
GX3904 Specifications
| Async Communication Channels |
|---|
| Supported Protocols | RS232 & RS422 |
| Number of Ports | (4) RS232
(4) RS422 |
| Connector | 68 pin SCSI |
| Supported RS232 Signals | RTS, CTS, TXD, RXD, DCD, DTR, DSR, RI |
| Supported RS422 Signals | RTS+, RTS-, CTS+, CTS-, TXD+, TXD-, RXD+, RXD-; all signals are differential pairs |
| Supported RS485 Signals | 2-wire mode: TXD / RXD (half duplex), CTS, RTS
4-wire mode: TXD, TXD / RXD (half duplex), CTS, RTS
Differential levels |
| UART | 16550, one per port. Interrupts from each UART can be mapped to any of the four INTA – INTD PCI interrupt lines. |
| Maximum Baud Rate | 115 K |
| RS433 / RS485 Termination | 150 Ω for each differential pair |
| Power |
|---|
| 3.3 VDC | TBD |
| 5 VDC | TBD |
| Environmental |
|---|
| Operating Temperature | +5 °C to +50 °C |
| Storage Temperature | -20 °C to +60 °C |
Humidity
(Non-Condensing) | 5% to 90% @ +40 °C |
| Size | 3U cPCI |
| Weight | 200 g |
Note: Specifications are subject to change without notice.
Downloads for GX3904
GX3904DS.pdf
Jan 27, 2023
version: B
159.05 KB
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