Acromag / Xembedded / Xycom XVME-203 Counter Module with Quadrature

The Acromag / Xembedded / Xycom XVME-203 is a VMEbus-compatible counter module engineered for industrial measurement and control applications. It delivers ten 16-bit counting channels via two AM9513A timer/counter devices, supporting counting rates to 5 MHz. The module integrates quadrature decoding for up to four simultaneous transducers and provides eight utility output channels managed by an AM9519A Universal Interrupt Controller with eight selectable interrupt vectors.

Technical Specifications

• Ten 16-bit counting channels


• Two AM9513A timer/counter devices


• Maximum counting rate: 5 MHz


• Quadrature decoding: up to four simultaneous transducers


• Eight output channels


• Eight interrupt channels (fixed or individual vector selection) VMEbus Compliance


• IEEE 1014 Rev. C.1 specification


• DTB Slave: A16:D08(0)


• Interrupter: I(1)-I(7)(DYN), ROAK


• Interrupt Vector: D08(O)(DYN)


• Form Factor: 3U Eurocard (165.1 mm × 100.01 mm) Electrical Characteristics


• Power supply: +5 V DC @ 1.6 A typical, 1.8 A maximum


• Input buffers: −200 µA (low), +20 µA (high)


• Output buffers: +24 mA (low), −15 mA (high) Environmental Performance


• Operating temperature: 0°C to 65°C


• Non-operating temperature: −40°C to 85°C


• Humidity: 5% to 95% RH, non-condensing


• Operating shock: 30g peak, 11 msec


• Non-operating shock: 50g peak, 11 msec


• Operating vibration: 5–2000 Hz, 0.015" peak-to-peak, 2.5g max


• Non-operating vibration: 5–2000 Hz, 0.030" peak-to-peak, 5.0g max


• Operating altitude: sea level to 10,000 ft


• Non-operating altitude: sea level to 40,000 ft

Key Features

• Dual AM9513A architecture for flexible counting configurations


• Built-in quadrature decoder for encoder and transducer interfaces


• Eight independently selectable interrupt vectors


• Compact 3U form factor for dense VME backplane integration

Typical Applications

• Stepper motor translators


• Turbine flow meters


• Voltage-to-frequency conversion


• Pulse-width-to-voltage conversion


• Heater duty-cycle control


• Quadrature encoder signal acquisition

Compatibility & Integration Fully compliant with VMEbus IEEE 1014 Rev. C.1 for direct integration into industrial control systems. The module operates as a DTB slave with dynamic interrupt assignment, enabling flexible system configurations.