National Instruments Low-Cost Multifunction I/O Board for ISA Lab-PC+ User Manual download pdf (Page 131)

Appendix D Register Map and Descriptions

Analog Input Register Group

The four registers making up the Analog Input Register Group control the analog input circuitry

and can be used to read the FIFO. Reading the FIFO Register returns stored A/D conversion

results. Writing to the Start Convert Register initiates an A/D conversion. Writing to the A/D

Clear Register clears the data acquisition circuitry. Writing to the DMATC Clear Register clears

the interrupt request generated by a DMA terminal count pulse.

Bit descriptions for the registers making up the Analog Input Register Group are given on the

following pages.

1 2 ... 126 127 128 129 130 131 132 133 134 135 136 ... 210 211

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National Instruments Low-Cost Multifunction I/O Board for ISA Lab-PC+ User Manual Page 131