The XVME-490 is a quad RS-232 serial I/O module designed for VMEbus systems operating to IEEE 1014 specification. It provides four independent, full-duplex RS-232C serial ports, each capable of asynchronous, byte-synchronous, and bit-oriented protocols. The module uses two Zilog Z8530 SCC chips and features independent baud rate generators and modem control signals (RTS, CTS, DCD, DTR) for each channel.
Technical Specifications
Form Factor & Architecture
• Double-high (6U) VMEbus module
• I/O routed via VMEbus P2 connector
• A16:D08(O) DTB Slave interface
• 1 Kbyte jumper-selectable address boundary allocation
Serial Interfaces
• 4 independent full-duplex RS-232C serial ports
• Two Zilog Z8530 SCC serial communication controllers
• Each channel independently programmable
• Independent baud rate generator per channel
Interrupts
• Jumper-selectable to any of seven VMEbus interrupt levels
• 16 different interrupt vectors available from two SCC chips
• Programmable IACK vector with source-based alteration
Power Requirements
• +5 V @ 1.1 A typical, 1.3 A maximum
• +12 V @ 100 mA typical, 110 mA maximum
Environmental Ratings
• Operating temperature: 0° to 65° C
• Non-operating temperature: -40° to 85° C
• Humidity: 20% to 80% RH, non-condensing
• Operating altitude: Sea level to 10,000 ft (3048 m)
• Non-operating altitude: Sea level to 40,000 ft (12,192 m)
• Operating vibration: 5 to 2000 Hz, 0.015″ peak-to-peak displacement, 2.5 g maximum
• Non-operating vibration: 5 to 2000 Hz, 0.030″ peak-to-peak displacement, 5.0 g maximum
• Operating shock: 30 g peak, 11 msec duration
• Non-operating shock: 50 g peak, 11 msec duration
– Key Features
• Four independent serial channels with full modem signal control
• Flexible protocol support: asynchronous, byte-synchronous, bit-oriented modes
• Flexible interrupt configuration across VMEbus levels
• Low power consumption profile
– Typical Applications
Industrial automation, data acquisition systems, and multi-channel serial communications within VME-based embedded environments.
– Compatibility & Integration
Related Acromag/Xembedded/Xycom modules include XVME-400 (single-high RS-232), XVME-401 (single-high RS-422A/RS-485), and XVME-491 (double-high RS-422A/RS-485).
