DP83848I: p2p and newer p/n? to interface with STM32F407 ARM M4?

Antonio Faggio

Part Number: DP83848I

Hi,

My customer is using DP83848IVV for the railway environment. Here the TI device interfaces via RMII to a STM32F207 (ARM M2).

Now he has to design a new board again for the railway that will use a PHY to interface via MII or RMII to a STM32F407 uC (it's an ARM M4).

Can we propose to customer a newer p/n, maybe pin to pin with the DP83848IVV with Tamb up to 105°C and perhaps with improved robustness characteristics from the EMC point of view?

During the design review with the end customer it was found some issues wiht the timing on the RX and TX signals towards / from the uC.

So maybe the new p/n can have some better data like for delay, set up and hold times?

Many Thanks,

Antonio

over 4 years ago

0 Nikhil Menon over 4 years ago

TI__Genius 11725 points

Hi Antonio,

If there are EMC issues, has the board schematic and layout been reviewed for possible sources of error?

Thank you,

Nikhil

0 Antonio Faggio over 4 years ago in reply to Nikhil Menon

TI__Expert 7890 points

Hi Nikhil,

Ok thank you, we had encountered some radiated immunity problems solved with Wurth magnets, but my question was whether intrinsically more robust and reliable devices were introduced, oriented to the industrial and automotive markets, regardless of the problems encountered.

This information could be good for our new products.

If you are available to check the design, I will send you the schematic?

My company email: a-faggio@ti.com for schematic check.

Many Thanks,

Antonio

0 Nikhil Menon over 4 years ago in reply to Antonio Faggio

TI__Genius 11725 points

Hi Antonio,

Thank you for your patience. I have responded via email and will be closing this thread.

Thank you,

Nikhil

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DP83848I: p2p and newer p/n? to interface with STM32F407 ARM M4?