ADV7604 queries

I have a few queries related to ADV7604:

  1. Can ADV7604 generate interrupts when HDMI/VGA is plugged in or plugged out?

2. Are there any registers in ADV7604 using which the host processor can know the input resolution? Also, can we read the horizontal blanking and other information needed to compute the pixel clock frequency?

3. If the source changes the resolution, can ADV7604 generate an interrupt to indicate this change?

4. The STDI registers refer to Channel 1 & 2. Which one to refer to know the standard? More details are needed.

5. In general, we want to understand the programming of this chip e.g. what needs to be configured after power on, then after HDMI/VGA source is connected .. etc

  • 0
    •  Analog Employees 
    on May 15, 2012 8:15 PM

    Hi Abhinay,

    1. Can ADV7604 generate interrupts when HDMI/VGA is plugged in or plugged out?

    [PS] Yes, the SSPD and STDI interupts may be used for analogue vide. There is also an interrupt for cable detection for HDMI inputs.  This is documented in the hardware manual.

    2. Are there any registers in ADV7604 using which the host processor can know the input resolution? Also, can we read the horizontal blanking and other information needed to compute the pixel clock frequency?

    [PS] Yes, the STDI (Standard Detection and Identification) block automatically works out the video resolution and the pixel clock frequency can then be calculated.

    3. If the source changes the resolution, can ADV7604 generate an interrupt to indicate this change?

    [PS] Yes, there are STDI and HDMI interrupts designed especially for this. These are covered in the hardware and software manuals.

    4. In general, we want to understand the programming of this chip e.g. what needs to be configured after power on, then after HDMI/VGA source is connected .. etc

    [PS] Has the customer got the driver? The driver is designed to easily integrate in to the customers software, and handles all the configuration of the ADV7604. Maybe the attached file will also help.

    Regards,

    Paul

  • 0
    •  Analog Employees 
    on May 16, 2012 8:40 AM

    Thanks Paul. You missed to answer the 4th question in my original post.

  • 0
    •  Analog Employees 
    on May 16, 2012 12:14 PM

    Hi Abhinay,

    4. The STDI registers refer to Channel 1 & 2. Which one to refer to know the standard? More details are needed.

    There are two standard identification block that enable dual system format detection. The inputs to these STDI blocks can come from either the component or graphics analogue inputs or from the HDMI input.

    Best Regards,

    Paul

  • 0
    •  Analog Employees 
    on Aug 2, 2018 4:35 PM
    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
    EZ Admin