National Instruments Corporation

Sean M Nickel

Rafael Castro

Andrew B Moch

A flexible converter interface for interfacing with ADCs or DACs. The flexible converter interface may be comprised in a data acquisition device and may be a programmable ADC interface or a programmable DAC interface. The flexible converter interface may be programmed with a converter type parameter, a converter resolution parameter, and a converter data type parameter, among others, to interface with various types of ADCs or DACs and to allow for future expandability. The flexible converter interface may function as either a programmable parallel converter interface or a programmable serial converter interface depending upon the programmed converter type parameter. Additionally, functions associated with I/O pins corresponding to the flexible converter interface may vary depending upon the programmed converter resolution parameter and the programmed converter type parameter. Furthermore, the flexible converter interface may perform a data conversion operation on ADC or DAC data depending upon the programmed converter data type parameter.

Flexible converter interface for use in analog-to-digital and digital-to-analog systems

A system and method for buffering bidirectional digital input/output (I/O) lines. The system (e.g., data acquisition system) may comprise a device including circuitry for buffering bidirectional digital lines. A first integrated circuit (IC) of the device includes a first and a second bidirectional buffer coupled to a first bidirectional digital I/O line, and a second IC of the device includes a third bidirectional buffer. The first IC and the second IC each include a control unit to control the driving direction of the corresponding bidirectional buffers independently to change the direction of the data flow through the first bidirectional digital I/O line from the output direction to the input direction or vice versa. The driving direction of the bidirectional buffers are changed at different times in a particular sequence, and the order depends on whether the direction change is from the output direction to the input direction or vice versa.

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Sean M Nickel