Rena Ayeras

Description: Rena C. Ayeras is a writer, editor and blogger with a technical background: test, development, and managing and training technicians. Recognizing the value of the guidelines, reports and articles she wrote as an engineer; she chose to focus on those contributions and moved over to technical writing, and has since branched out to marcom and blogging. BSIT. Member of IEEE.


Posts by Rena Ayeras:

How Do I Use the USB Power Delivery Analyzer and Data Center Software to Verify Power Data Objects?

Question from the Customer:

We need to check if the Power Delivery Object (PDO) is correct on the factory side. To do so, we are planning to run tests by switching PDOs and then check if our Type-C docking station can switch to different voltage levels: 5V, 9V, 15V, and 20V. Can the USB Power Delivery Analyzer support this?  Here are the detai...

How Do I Unlock the Write Protection to Enable Programming an SPI Quad Serial Flash Chip?

Unlock the Write Protection to Enable Programming an SPI Quad Serial Flash ChipQuestion from the Customer:

I’m struggling to add a Microchip SST26VF016BT-104I/SN serial flash to the Flash Center Software. There are enough similarities between the older device SST25VF016BT (which is currently supported in your library) that I should be able to modify that XML file. However, the write protection schemes seem to be very di...

Power Delivery and Type-C Cables Work Together – How Do I Measure and Evaluate Both?

Question from the Customer:

I have an evaluation to run for a customer that includes both power and resistance measurements. Here’s what I know I can do so far – what do I need to add to this setup?

I am using the USB Power Delivery Analyzer with the Data Center Software to check CC status between a USB Type-C Device and USB Type-C AC Adapt...

How Can I Set Up the Master eSPI Behavior I Need with the Promira Serial Platform?

Question from the Customer:

I am using the Promira Serial Platform with eSPI Analysis Application  and the eSPI Active Example Files. I’m using the script to emulate a master eSPI. For this setup, I need the help with the following:

  • I need to add WAIT_STATEs
  • Also, I need to generate additional clock cycles when the slave d...

How Do I Set Up SDC or MMC Cards in SPI Mode to Verify Files were Successfully Programmed?

Question from the Customer:

I would like to use the Aardvark I2C/SPI Adapter in SPI mode and the Aardvark Software API to communicate with SDC and MMC cards. I need to verify that files were successfully programmed in the production environment. Can I search for files on an SDC Card using the Aardvark I2C/SPI Host Adapter?

Response from Technic...

How are CC2 and VCONN Voltages Measured with the USB Power Delivery Analyzer?

Question from the Customer:

I’m starting to use the USB Power Delivery Analyzer. Looking at the power measurements, I see different voltages for the CC2 pin and VCONN. My understanding is VCONN reads 5V, but the VCONN is the voltage on the non-used CCx pin, which will read at 3V.  Can you explain why the voltage readings are different?


How Do I Filter Data on Two Addresses using Command Line Instructions?

Question from the Customer:
I have captured hours of data using Data Center Software (.tdc files). I’d like to filter data starting with a specific address, such as 0xF0 OR 0xFF. How can I do that? Also, is it possible to filter data on two addresses?

I’m also looking into using command line instructions (CLI), such as:


You Can Easily Create and Verify XML Part Files for your SPI Flash Device using Flash Center Software and Cheetah GUI Software

Question from the Customer:

I purchased a Cheetah SPI Host Adapter to read and write to a SPI Flash device and it is working well for that task. The board I am working on also contains a SPI FRAM (Cypress FM25V01) and I wonder if a device file can be created so that I can read/write to this part? I glanced at some of the Flash Center Software x...

How Can I Best Read the Packets from the USB Power Delivery Analyzer to Ensure I Capture All the Data?

Question from the Customer:

I’m using the USB Power Delivery Analyzer and I have questions about using the Software API.

  • Does the API only read from the hardware buffer of the USB PD analyzer?
  • API - Start Capture - How does this work? Does it start monitoring to save the data from any buffer or a specific buffer (hardware or software buffers...

How Can I Run Parallel Scripts with the Promira Serial Platform To Toggle GPIO During SPI Writes?

Question from the Customer:

I am using the Promira Serial Platform with Promira Software API I2C/SPI Active. I’m looking to create a script (in Python) so that the SPI and GPIO commands occur in parallel; the GPIO toggles during SPI writes. Here is a summary of what I’m looking to do:


start gpio toggle;
submit spi write queue;
stop g...