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Occasional Contributor
Posts: 6
Registered: ‎08-05-2014
Accepted Solution

BCM53128 EEPROM - Link Speed/Duplex

Hello,

I am trying to force Port 3 (starting from Port 0) to 10 Mbps/Half-Duplex.

I have tried the following, but it does not seem to be forcing Port 3's speed and duplex:

//     Page     Offset     Bytes     Data

       00          5B          01          41          //Port #3, Speed 10 Mbps, Half-Duplex (01000001)

END

**Edit

We have also tried:

        13          00          02          0000     //Port #3, Speed 10 Mbps, Half Duplex, auto-negotiation off

END

**Edit

Is there another value that I am missing?

Thanks,

Kevin

Message was edited by: Kevin Makovy

Broadcom
Posts: 287
Registered: ‎02-15-2016

Re: BCM53128 EEPROM - Link Speed/Duplex

Hi Kevin,

Since Port3 integrated the gphy port, to force Port3 speed and duplex need configure gphy port register and it dose not need via Port3 PortStateOverrideReg(0x00: 0x5B).

Please find the below registers write to force Port3 10Mbps and Half duplex.

Set Reg(0x13: 0x12)=0x0c00

Set Reg(0x13: 0x08)=0x0c21

Set Reg(0x13: 0x00)=0x0000

Set Reg(0x13: 0x30)=0xf267

For EEPROM script,

//     Page     Offset     Bytes     Data

       13          12          02          0c00

       13          08          02          0c21

       13          00          02          0000

        13         30          02          f267

END

Thanks,

Ryan

Occasional Contributor
Posts: 6
Registered: ‎08-05-2014

Re: BCM53128 EEPROM - Link Speed/Duplex

This worked perfect.

Thanks for helping,

Kevin

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