課件講稿ni培訓(xùn)lesson fpga

1、Lesson 4FPGA I/OConfiguring FPGA I/OFPGA I/O Palettes I/O TypesA. Configuring FPGA I/OB. FPGA I/O PalettesUsing FPGA I/O NodesTwo ways to use FPGA I/ODrag and drop from the Project ExplorerDrop empty I/O node on block diagram. Left-click and select I/O.C. I/O TypesDigital lines writes/reads Boolean

2、value to/from digital lineDigital Ports writes/reads unsigned 8-bit integer value to/from digital port (grouping of 8 digital lines)Analog I/O writes/reads 16-bit integer value to/from analog channelFlexible Digital I/OExample Finder: Toolkits and Modules FPGA Fundamentals CountersCreating a custom

3、counterMinimum input pulse width detectable depends on loop periodBinary Conversion for Analog I/OWhen performing analog I/O, the voltage must be converted from a binary value to a nominal value on the hostThe binary conversion factor depends on the resolution of the boardNominal Value versus Binary

4、 ValueNominal Value: 10 VoltsBinary Value:Range of board or module:216 bits =65536 bits10(10)Volts=20V 65536/20=32768 0V = 32767 Binary10V = 0 Binary 10V = 65535 BinarySummaryConfigure I/O nodes through the Project Explorer or the block diagramDigital I/O can be configured using lines or portsDigital lines may be used to implement more advanced I/O such as counters or