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DP83848C pin to pin DP83848I ?

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vengadesh uthirapathy
Posted by
on Mar 15 2012 08:27 AM
Intellectual600 points

Hi ,

Vengadesh here from avnet . One of my customer has been using NSC DP83848CVV (   commerical temperature  ) part for thier products with LP2378 processor .   Now they want to replace with industrial temperature . we had suggested the DP83848IVV. They have replaced with DP83848IVV but communication is not working ? what could be reason  ?

MAC we have update based on DP83848IVV ?

Please advice ASAP.

Regards/

vengat

 

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  • John Hamilton1
    Posted by
    on Mar 15 2012 09:48 AM
    Intellectual875 points

    Hello Vengat,

    The DP83849CVV and DP83849IVV are pin for pin compatible. There should not be an issue using the DP83849IVV.

    Can your customer provide any additional information (example schematics) that we could review?

    Thanks,

    John 

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  • vengadesh uthirapathy
    Posted by
    on Mar 15 2012 12:33 PM
    Intellectual600 points

    Hi John ,

    Thanks for your support , Are you taking about the DP83849 or DP83848 ?   MAC or driver will be same for both DP83848V & DP83849 ?

    I will try to get the schematic if the problem is still persist  .

    Regards/

    Vengat

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  • John Hamilton1
    Posted by
    on Mar 15 2012 13:13 PM
    Verified Answer
    Verified by
    Intellectual875 points

    Hello Vengat,

    The DP83848CVV is also pin compatible with the DP83848IVV.

    Thanks,

    John

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  • vengadesh uthirapathy
    Posted by
    on Apr 02 2012 14:40 PM
    Intellectual600 points

    Hi John ,

    Thanks for your support.  DP83848I is working in customer proto board.   Customer also want to evalute the TLK110 ? i had checked it is similar PIN / Package whether it is pin to pin compactitable with DP83848I & DP83848C ?  Pin no.21 (SW_STRAPN )--->pls confirm the function ? .

    Regards/

    Vengat

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  • John Hamilton1
    Posted by
    on Apr 04 2012 09:53 AM
    Intellectual875 points

    Hi Vengat,

    Section 3.8 of the TLK110 data sheet provides a very good description of the function of pin 21 (SW_STRAPN).

    On the DP83848C/I  devices pins 20 and 21 are reserved and should be pull to 3.3V through 2.2K Ohm resistors.

    On the TLK 110 if pin 21 is pulled to 3.3V through a 2.2K Ohm resistor the software strapping function is disabled.

    Pin 6 on the DP83848C/I provides TXD_3 and SNI_MODE , pin 6 on the TLK110 only provides TXD_3.

    All other pins on the DP83848C/I and the TLK110 match.

    Thanks,

    John

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  • vengadesh uthirapathy
    Posted by
    on Apr 04 2012 13:04 PM
    Intellectual600 points

    Thanks John.

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