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DLPC4420: Inquiries about the FPGA controlling the DLPC4420, etc.

Ji-Woo Park
Prodigy 20 points
Part Number: DLPC4420
Other Parts Discussed in Thread: DLPC4422,

I am currently designing a DLP using the DLPC4422 and the 660TE's EVM.

However, I am aware that the DLPC4422 is being discontinued.

So we are designing DLP with DLPC4420 and 660TE.

In this process, I would like to know the following issues related to the DLPC4420.

1. When can I download the FPGA file to control the DLPC4420 x2?

2. Does DLPC4420 provide the same I2C function that can control IT6807E in DLPC4422?

I look forward to hearing from you on the above.

Thank you.

  • 0
    TI__Genius 11935 points

    Hello Ji-Woo,

    Thank you for your questions, I hope this resolves your questions.

    1. When can the FPGA file to control the DLPC4420 x2 be downloaded?

    • Answer: The FPGA file does not control the DLPC4420 it controls the FPGA, which on our Evaluation Modules (EVMs) we utilize an Altera based FPGA. The FPGA code can be utilized from the DLPC4422. An explanation and instructions can be found HERE.

    2. Does DLPC4420 provide the I2C function that can control IT6807 in DLPC4422?

    • Answer: The DLPC4420 is a drop-in compatible part from the DLPC4422. There is currently not a solution for implementing IT6807 as a front-end for either the DLPC4422 or DLPC4420.

    Best,

    Aaron

  • 0 in reply to Aaron Black
    Prodigy 20 points

    Hi,

    Analyzing the EVM circuit of the DLPC4422, I2C is connected to the Vx1 interface to the connector. (DLPCRDC4422EVM_SCHMATIC(003).pdf page.3)

    This I2C is connected to IT6807E.

    It seems to be a signal used to setup the IT6807E.

    Is what I think right?

    To double check, are the FPGA files used for DLPC4422 and DLPC4420 the same?

    Thank you.

  • 0 in reply to Ji-Woo Park
    TI__Genius 11935 points

    Hello Ji-Woo,

    Yes the I2C is connected to IT6807 chip but the DLPC4422 EVM does not send 5V to power the IT6807, so we have been incapable in utilizing the chip with a single board solution. New hardware to follow with this enabled and software evaluation is ongoing.

    Again, the DLPC4422 and DLPC4420 are ASIC controllers, not FPGAs. The .rpd files used for the Altera FPGA is the same for use with DLPC4422 and DLPC4420.

    Best,

    Aaron

  • 0 in reply to Aaron Black
    Prodigy 20 points

    Hi, 

    Then, if 5V power is supplied to IT6807E, can Vx1 data be received by I2C setting of FPGA?

    thank you

  • 0 in reply to Ji-Woo Park
    TI__Genius 11935 points

    Hello Ji-Woo,

    If 5V power is supplied to IT6807, the I2C1 lane from the DLPC4420 will be able to connect with either the DLPC4422 or DLPC4420 ASIC controllers.

    The FPGA does not control the IT6807, the FPGA locks to incoming data and will split the data accordingly to either of the ASIC controllers. Please reference figure 8-1. Typical Application within the DLPC4420 datasheet here.

    Best,

    Aaron

  • 0 in reply to Aaron Black
    Prodigy 20 points

    Hello,

    then...

    If 5V is supplied to the IT6807 and the DLPC4422 or DLPC4420 and IT6807 are connected through I2C, is it possible to output HDMI to Vx1 by setting the register of the IT6807E in the DLPC?

    Is my understanding correct?

    What I want to know is whether the DLPC4422 or DLPC4420 can control the IT6807E to transmit HDMI to Vx1.

  • 0 in reply to Ji-Woo Park
    TI__Genius 11935 points

    Hello Ji-Woo,

    Yes, DLPC4422 or DLPC4420 can control the IT6807 to transmit HDMI to Vx1.

    We will be releasing soon hardware with software that will have an IT6807 front-end solution included with the formatter board.

    Best,

    Aaron