Xtium-CLHS PX8 User's Manual Technical Specifications • 71Note 2: General Outputs /Strobe Output SpecificationsEach of the four General Outputs are TTL (3.3V) compatible. General Output 1 also functions as theStrobe Output controlled by Sapera strobe control functions. See “Board Information” usersettings. The following figure is typical for each General Output.75ΩBufferLVTTL To UserInterfaceConnector3.3VOutputEnableEMIFilterFigure 26: General Outputs Electrical DiagramOutput Details:• Each output has a 75-ohm series resistor• The 2 diodes protects the LVTTL buffer against overvoltage• Each output is a tri-state driver, enabled by software• Minimum guaranteed output current is +/- 24mA @ 3.3V• Maximum output current is 50mA• Maximum short circuit output current is 44mA• Minimum voltage for output level high is 2.4V, while maximum voltage for output low is 0.55V• Maximum output switching frequency is limited by driver and register access on the PCIe bus.For Strobe Usage:• Refer to Sapera Strobe Methods parameters:CORACQ_PRM_STROBE_ENABLECORACQ_PRM_STROBE_POLARITYCORACQ_PRM_STROBE_LEVELCORACQ_PRM_STROBE_METHODCORACQ_PRM_STROBE_DELAYCORACQ_PRM_STROBE_DURATION• See also *.cvi file entries:Strobe Enable, Strobe Polarity, Strobe Level, Strobe Method, Strobe Delay, Strobe Duration.
