Seamless Generation of intermitte​nt patterns

Question

I'm using a 6562 device for generation of clock and commands for an ASIC. 
I need two clocks generated (say 100MHz and 50MHz) as well as the commands for the chip. The commands are not send in a continuous manner, though the clocks shall be seamless. 
I would like to use CLKOUT line as the faster clock, DIO0 line as the slower one (1010101010...) pattern with 0s on DIO1 (used for command line)
I would like such pattern to be output constantly, with occasional burst of some given waveform on DIO1 (bundled with DIO0 'slow clock' pattern). How  do I seamlessly inject some arbitrary (known beforehand) waveform inside a continous generation of 'clock'?

Answer 1

Hi,
This is a great application for scripting. The 6562 (and other HSDIO devices) have a scripting functionality that allows you to download multiple waveforms and then define loops, links, jumps, etc. With scripting you can download an "Idle" waveform that generate a constant clock and other waveforms that generate the clock plus the commands. After writing the waveform you write a script that loops you idle wavefrom until you send a SW command or a HW trigger to jump to one of the commands. Jumping between waveforms is seamles and you will not miss any samples. Check out the Script Editor at "Start>>programs>>National Instruments>>NI-HSDIO>>Script editor" to get a better idea of the different functionality offered. 
Good luck with you application,
Juan Carlos