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Last Post 18 Dec 2018 11:06 AM by  Adam Ford
Any USB OTG Chip Recommendations?
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Tim Anderson



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13 Dec 2018 11:24 AM

    The USB OTG controller (ISP1763A) on the development kit is Obsolete and no longer available. Do you have any recomendations for a replacment? Do you have any extra ICs which I could purchase from you?


    Adam Ford



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    17 Dec 2018 11:00 AM
    Tim,

    I got your VM. Sorry I have not responded yet. I'm waiting to hear back from our inventory specialists and purchasing groups to see what we have on inventory, on order, etc. to see if/what options are available.

    I'll call you back when I have more info.

    adam


    Adam Ford



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    17 Dec 2018 12:50 PM
    Tim,
    Unfortunately, I don't have good news for you. We've done a last-time buy to service the rest of the life of our development kit. I know at least one customer has done the same for a product they designed. Unfortunately, we don't have any excess inventory to sell for the ISP1763A nor do we have a replacement part identified.

    Having stated that, we have a design and engineering services group that can quote both finding a replacement part as well as integrating the driver into the kernel. If you'd like to have a sales person reach out to you to discuss options, let me know, and I'll have someone contact you.

    Thank you,

    adam

    Tim Anderson



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    18 Dec 2018 09:18 AM
    Hello Adam, The ISP1763A appears to be connected to the SOM via a 16bit Parallel bus (the ISP1763A supports 8 bit and 16 bit buses). However it is difficult to find parts that use a 16pin parallel bus. does the Torpedo + Wireless SOM support smaller bus architectures? 8 bit parallel instead of 16 bit? Does the SOM support ULPI?

    Thanks

    Tim Anderson



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    18 Dec 2018 10:36 AM
    Just to ask it another way, what type of expansion bus's does the Torpedo + Wireless SOM support? I can find a number of different port types on the ISP1763A datasheet (SRAM, NOR, NAND, and General Multiplex), but am having difficulty finding corresponding information in the SOM datasheet. Thanks

    Adam Ford



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    18 Dec 2018 11:05 AM
    Tim,

    The ISL1763A is connected to the GPMC bus on the SOM. GPMC is the General Purpose Memory Controller. The GPMC controller has a parallel interface which can be configured as 8 or 16-bit according to the DM3730 technical reference manual.

    http://www.ti.com/lit/pdf/sprugn4

    The GPMC bus can be used for communicating with NAND, NOR, and a variety of other devices using a parallel type interface. The Ethernet controller on the Torpedo development kit is another device on the same bus. The devices all share a same bus, but each device has different chip select pins.

    If you've registered a SOM and/or a kit, you should have access to the downloadable schematics for both the Torpedo SOM and the development kit for the Torpedo SOM.

    I confirmed with the hardware designer that the ULPI interface wasn't exposed on the Torpedo SOM which is why we used the GPMC interface to the ISP1763.

    adam

    Adam Ford



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    18 Dec 2018 11:06 AM
    FYI, the download link for the dev kit and SOM's is: http://support.logicpd.com/DesktopM...EntryId=52

    You'll need to be logged into our system for the link to work.

    adam
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