A related question is a question created from another question. When the related question is created, it will be automatically linked to the original question.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
My understanding is that the default windows drivers will detect this as an HID device. Bring the HID pins high will cause the state change to occur. I check for some timing information for the function, as I do not see that in the PDS.
I have checked with my design team and we do not have detailed timing information for the HID input pins. Are you looking for a specific timing parameter? Is there a specific concern that you have about the inputs?
I did some research into the HID interface definition. The PCM270xC polls the HID pins and updates the HID interrupt vector every 10ms. This is then interpreted by the operating system that the device is attached to. The HID command (0xE9, 0xEA) are defined as "volume increment" and "volume decrement". It seems like Microsoft Windows has defined this a 2% volume step, and that it cannot be changed without running some specialized software.
Windows also limits the number of steps per second. For example, if you assert the HID input for 40ms, you are not guaranteed an 8% increment. Windows will likely limit this to just 2 or 4%. This is to make the user experience better.
