Help in selecting a processor for logging digital bits every 5 us

Ashutosh Jain57

I have designed a circuit board which based on input signal pulse,generates 40 bits containing pulse width, peak and time of arrival of the pulse

Specifically I need a controller/processor which can read and store these 40 bits to a memory every 5 us. It should also support USB interface, so that I can transfer the data to a computer, and it doesn't fill the onboard flash.

Could you please help suggest a controller pertaining to this task?

Thanks,

Ashutosh

over 8 years ago

0 Bobby McGoldrick over 8 years ago

TI__Intellectual 1495 points

Just basing your need for USB, I could suggest the 28377.

www.ti.com/.../tms320f28377d

You will need to provide a little more details on how the data is to be transferred to provide better guidance. Is it just a raw serial stream spread over 5us or does it come in a burst? Is there any protocol encoding? You could look at the SPI port or just use a GPIO port. If you can make the data parallel, then you could read it via UPP or EMIF port.

0 Ashutosh Jain57 over 8 years ago in reply to Bobby McGoldrick

Prodigy 20 points

Hi Bobby,

Thanks for your reply.

The 40 bits are parallel, so I need to store 40 bits parallel every 5 us. I would like to store these 40 bits to a memory or use USB to transfer to a computer.

Sorry I missed to mention that the bits are parallel.

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Help in selecting a processor for logging digital bits every 5 us