Support

What Causes I2C Clock Stretching? When Is It Needed?

Question from the Customer:

We are using the Aardvark I2C/SPI Host Adapter as an I2C slave to test a master I2C port on another device. It appears the Aardvark adapter uses clock stretching while it is configured as a slave. Can you tell us what causes clock stretching?  When should we expect to see that feature occur?

Response from Technic...

What Causes SPLIT and Orphaned Packets and How Do I Eliminate Them from a USB Capture?

Question from the Customer:

I’m using the Beagle USB 480 Protocol Analyzer, which is connected to a USB hub with both ports. A mass storage device is connected to the Beagle USB 480 analyzer’s device port. .

In the Data Center Software, the captured data includes a lot of SPLIT and ORPHANED packets. I can filter out the SPLIT packets in...

How Do I Identify the Cause and Resolve PHY Errors on a USB 3.0 Camera Device?

Question from the Customer:

I am using the Beagle USB 5000 v2 SuperSpeed Protocol Analyzer - Standard Edition with the Data Center Software to resolve a USB 3.0 issue with a Basler industrial camera device. The Beagle USB 5000 v2 analyzer reports PHY Errors for all USB 3.0 packets. I have tried other slave devices (cameras, mobile phones)...

How Do I Reduce the Latency of Data Being Delivered from a USB Port to the Computer?

Question from the Customer:

We are using the Beagle USB 480 Protocol Analyzer and Data Center Software to sniff Full-speed USB data. We observed that data is displayed first on the DUT display and displayed on the Data Center Software afterwards. This was not expected. In our setup, data should be displayed on the Data Center Software befor...

To Verify the USB Data Path is Operating at Maximum Speed, How Do I Adjust Periodic Timeout and Polling?

Question from the Customer:

I am using the Beagle USB 480 Protocol Analyzer to debug some issues on my CDC ECM implementation on a STM-32 MCU. I have questions about the results I’m seeing with Data Center Software.

I am looking into the significance of the POLL and IN-NAK counts, as well as the Length that is reported in some records as by...

Which Host Adapters Can Operate as either SPI Slave or SPI Master and Run from One Computer?

Question from the Customer:

I have been using the Cheetah SPI Host Adapter as an SPI Master – now I need the functions of both an SPI Master and an SPI Slave. I see the Cheetah adapter only functions as an SPI Master.

For ease of use, I’m looking to use the same model for these functions. I need to operate these SPI devices independently ...