AM5718: AM5718 GMAC interface to DP83822H

Rakesh Muralidharan

Part Number: AM5718
Other Parts Discussed in Thread: DP83822H

Hi,

Attached schematics I connected a 10/100 ETH PHY DP83822H to AM5718 GMAC SW0 MII interface....... How to make sure that bootstrapping would work so that PHY wakes up with proper MDIO address??

What precaution I need to take at AM5718 for a proper wake up of PHY unit??

I have given a provision to reset PHY using AM5718 GPIO and system reset....DP83822H_Schematics.pdf

GMDIO interface connects to MDIO interface for Eth PHY..... I prefer to work with 1.8V for ethernet phy....

I prefer to have following configuration for PHY

1.8V for Ethernet PHY

Defaults
MII mode,25-MHz Reference Clock
Auto-negotiation enabled, advertising all 10/100 mode capable
LED Mode 1

Please suggest changes needed for proper functioning of Ethernet PHY ....

over 6 years ago

0 -DK- over 6 years ago

TI__Mastermind 27890 points

Hello,
The AM571x device does support 1.8V signaling on MII. Please ensure that the pinmuxing for your specific implementation allows for it.

The remainder of these questions appear to DP83822 specific. I'll move this to the relevant forum for the team that supports it for comment.

0 Hung Nguyen92 over 6 years ago in reply to -DK-

TI__Expert 5670 points

Hi Rakesh,

As far as DP83822 configuration, it looks fine.

Regards,

Hung Nguyen

0 Hung Nguyen92 over 6 years ago in reply to Hung Nguyen92

TI__Expert 5670 points

Hi Rakesh,

I haven’t heard back from you, I’m assuming you were able to resolve your issue.

I will go ahead and close this thread. If you need further support, kindly open a new thread.

Regards,

Hung Nguyen

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AM5718: AM5718 GMAC interface to DP83822H