What is the Maximum Number of Bits Supported in USB-8452 Stream Mode?

Updated Jan 3, 2020

Reported In

Hardware

  • USB-8452

Software

  • LabVIEW

Driver

  • NI-845x

Operating System

  • Windows

Issue Details

I'm currently communicating with my DUT using USB-8452 and the SPI Stream Configuration using the TI ADS833x Example. My DUT sends 128-bit payload on a single channel basis to USB-8452 as MISO data. But I receive an error massage that data above 64-bit is not supported.

Solution

Payload for standard SPI communication is 64-bit. The 128-bit data cannot be received because the USB-8452 is designed to comply with the standard. Therefore I recommend that you would be needed to split your data payload. If it's impossible, you should use FPGA-based device to configure custom SPI protocol.