DP83867IR: Register about RX Integrity.

GukHyun Lee

Intellectual 260 points

Part Number: DP83867IR
Other Parts Discussed in Thread: AM3352

Hi, Experts.

I wonder if there is a register for RX Integrity.

My DP83867 chip had received a ARP Packet from external and I want to check the packet is no problem.

Thanks.

over 3 years ago

0 GukHyun Lee over 3 years ago

Intellectual 260 points

Hi,

I probed TX_D0 and RX_D0 signals and I got waves like:

TX_D0 (1V per an interval of column and 100ns per an interval of row) :

RX_D0 (1V per an interval of column and 100ns per an interval of row) :

Could you check the approximate form is alright in view of signal integrity?

My MCU couldn't receive the data in my case.

Thanks.

0 David Creger over 3 years ago in reply to GukHyun Lee

TI__Mastermind 26712 points

Hi,

I cannot diagnose a raw waveform. You will need to perform a measurement on the oscilloscope and ensure it is meeting the specifications listed in section 7 of the datasheet. Which MAC interface are you using?

Thanks,

David

0 GukHyun Lee over 3 years ago in reply to David Creger

Intellectual 260 points

Hi,

I see..

The MAC interface is am3352 RGMII.

0 David Creger over 3 years ago in reply to GukHyun Lee

TI__Mastermind 26712 points

Hi GukHyun,

In that case, please perform measurements on the oscilloscope to ensure the following specifications are met.

Thanks,

David

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DP83867IR: Register about RX Integrity.