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DS90UB926QSEVB: part number for the HSD connector

bandit gangwere
Intellectual 855 points
Part Number: DS90UB926QSEVB


What is the Rosenberger part number for the HSD connector talked about in the '926 eval user guide?

The BOM and the associated text does not contain the part number.

I have searched the various forum posts. I found this BOM for the '928: http://www.ti.com/lit/df/tidrwd0/tidrwd0.pdf 

it says the part number is D4S20D-40ML5-Y (and) Rosenberger Automotive HSD Connector - Right Angle Plug for PCB. DO NOT PURCHASE. TI WILL PROVIDE.

Is this the right part number? Will TI provide the J1 connector? Why does one BOM for one eval kit specify this detail, and others do not (hint, hint)?

Why is the user guide not explicit in the discussion on using the HSD connector about what the part number is && TI will provide it?

Short version: why are you making it hard on the engineer? Why are you forcing us to waste our time figuring out something you should just be telling us?

(Not trying to sound harsh. TI makes good stuff, and for the most part, the documentation is good to excellent. Just frustrating when these details get dropped.)

It does make sense to use the same part for the SER & DES to keep the cabling simple. In my case, the '926 is the DES; the SER will be the '947 (both appropriate eval kits).

I note the '947 eval kit uses the D4S20D-40ML5-Z, so it makes sense the '926 eval kit should use the same connector. Be nice if it was in the BOM (hint, hint)

Since I am asking for specifics, if the same HSD connector is on both ends, what is a good part number for the cable?

(Yes, I could probably look it up on the Rosenberger website, but why not make it specific?)

speaking of hints for missing information:

Where you have a case of the SER & DES eval kits using the same connectors, PLEASE include the part numbers for the cables! 

For the '913 // '914 you give the details, but I first looked at Digikey and Mouser for the cable - no joy.

I then explicitly googled the exact text and found the proper cable.

So you left enough of a breadcrumb trail, but I thrashed for a bit before I got smart. The cable part number and source should be in the BOM when possible.

And when not possible, enough information so w can make our own..

(BTW, it might just be my computer setup, but a line long enough to wrap gets really funky when it wraps

- the wrapped text is half a line height, not a full line height. this is an example.

And when the line wraps, the cursor wants to be stuck at the end on the line - it will sometimes not move if you click inside that line (say to correct a typo).

You do eat your own dogfood...??? (That is a technical term. it means you use your own product, or customer-facing system.)

  • 0
    Intellectual 855 points
    note: the first time I posted with wrapped lines, most of the post went away. It posted properly with no wrapped lines.
  • 0 in reply to bandit gangwere
    TI__Intellectual 1565 points
    Thanks for the feedback Bandit Gangwere.

    We do have engineers both entering and answering E2E questions, so we do "eat our own dogfood". I have not experienced the line wrapping issue you mentioned, and will try to reproduce and then file a change request for a fix. What OS & browser are you using?

    I've recently joined this team, and will bring your feedback regarding EVM BOM to the applications manager with a recommendation on standardizing BOM details in our user guides in a manner that allows customers to quickly order required accessories.

    Regarding the connector, I am tracking down the design files and have asked two engineers that were here when the 926 was released. I'll update as soon as I get the part number.

    Mike
  • 0 in reply to Mike Leister
    TI__Intellectual 1565 points
    Hi Bandit,
    Here is the part number D4S20D-40ML5-Y
    Mike
  • 0 in reply to Mike Leister
    Intellectual 855 points
    Windows 7, chrome Version 66.0.3359.181 (Official Build) (64-bit)
  • 0 in reply to Mike Leister
    Intellectual 855 points
    How about the cable?

    The Rosenberger info sheet has a bunch of stuff in it, but it is spectacularly obscure. Useful if you know the secret code and need that particular piece of arcane lore, but not to build a cable part number.

    And - the D4S20D-40ML5-Y is not even listed in it....

    And I guessed/assumed correctly - both sides have the same connector.

    And I realized it was a bit of a rant - just frustrating. I would suggest starting a checklist for the stuff in the user guides.
  • 0 in reply to Mike Leister
    Intellectual 855 points
    QUESTION: Will TI provide the connector with the eval kit?
    QUESTION: If not, where can we get it?

    Digikey and Mouser do not carry them.

    QUESTION: AND - WILL TI BE WILLING to supply/sell the cable?

    The only other way is from Rosenberger.
    Their sales offices are found at www.rosenberger.com/.../
    Select your country for their sales offices

    Assuming both ends are D4S20D-40ML5-Y, the cable is

    cable '926 to '947 Rosenberger LD5-101-xxxx-y-y
    xxxx == length in milimeters
    y == connector end (we need "Z")
    LD5-101-2000-Z-Z (2 meter cable)

    (The '947 comes stock with the D4S20D-40ML5-Y. So this should apply to the eval kits compatible with the '947 where TI has the same connector or hooks for the same, like with the '926)

    Note: If you call their sales office, there is a good chance they will give you a cable as a sample (and possibly connector if TI decides to be cheap && not provide it - still waiting on that question's answer).

    (Yes, I am ragging on TI because I SHOULD NOT NEED TO LOOKUP THIS INFO. IT SHOULD BE IN THE USER GUIDES.)

    Hopefully, Rosenberger will add these items to Digikey and/or Mouser - they will if they perceive enough of a demand...

    (Note to TI: This time the wordwrap works properly. Seems to be an issue in the original posting window.)
  • 0 in reply to bandit gangwere
    TI__Intellectual 1565 points
    Hi Bandit Gangwere,

    I was on vacation, sorry for the delay. Thanks for the update on the word-wrapping issue; I have forwarded it to our IT support.

    Looks like the part we specified when we designed the board has been obsoleted. D4S20L-40MA5 is the drop-in replacement. The part was not on our BOM because we do not supply the connector with the board. I've asked for a BOM update so that we can ship with the connector, but in the short term you will need to order a connector.

    www.rosenberger.de/.../index.php

    We do not sell the cables.
    www.rosenberger.de/.../index.php
    ...is the cable with ResenbergerHSD jack that matches the plug that fits on the EVM.

    Thanks for being blunt with your feedback. I'd rather hear from you unfiltered so that I can work with our manager to better target the support you need.

    Mike
  • 0 in reply to Mike Leister
    Intellectual 855 points
    Interesting.
    I have not checked the datasheets, but the -40MA5 should be plug- and footprint compatible with the obsoleted -40ML5 .. you give the same cable number. And TI would be in a world of pain if the pcb footprint were to change.

    Do you think you can get an answer to my other questions?
    1. Will TI provide the -40MA5 connector with the kit?
    2. will TI start putting these types of details in new revs of the user guide?

    Welcome back to the salt mines... bandit
  • 0 in reply to bandit gangwere
    Intellectual 855 points
    The footprints look the same.
    Different plastic for housing
    Center of Gravity moved down a bit.
    Ah, well...
  • 0 in reply to bandit gangwere
    TI__Intellectual 1565 points
    Bandit,
    1. Not in the short term, but I filed a ticket to get this changed.
    2. I brought this to the team manager and will advocate for it at our team meeting.
    3. Thanks, good thing I like salt!
    Mike
  • 0 in reply to Mike Leister
    Intellectual 855 points
    1. I know you have for various other eval kits.
    Fortunately, it looks like Mouser has a few in stock.
    www.mouser.com/.../D4S20L-40MA5-Z

    2. Thanks! Please show him my rants if it will do any good.

    3. Salt is easier than www.youtube.com/watch

    Thanks ... bandit
  • 0 in reply to bandit gangwere
    TI__Intellectual 1565 points
    Hi Bandit,

    Our IT help has a follow-up question regarding the word-wrap issue you experienced.

    Can you follow this link and respond?

    e2e.ti.com/.../694779

    Mike