DP83TC812EVM-MC: media converter working

Hi Jeehoon,

You can refer to our DP83TC812EVM User Guide: https://www.ti.com/lit/ug/snlu292a/snlu292a.pdf 

Please make sure the PHY is configured correctly in slave/master mode.

You can change this by changing the shunt across J2.

• Master Mode – Place shunt across pins 1 and 2 of J2 as demonstrated in figure below

• Slave Mode – Place shunt across pins 2 and 3 of J2

Once you confirm this, please check register 0x1 to make sure the PHY is linking. 

Best regards,

Melissa

Hi Melissa

I tested below the process but that didn't work.

Please help me to solve this problem. 

need more detailed user guide (snlu292a.pdf  , I already have) and mdio command set

-- Test Process--

Setting: PC(Main) <-> DP83TC812EVM-MC(Select Matster) <-> DP83TC812EVM-MC(Select Slave) <-> PC (Sub)

First,  put 0x1 and received  0x0065 on PC(Main) => link established.         

Second, send ping data from PC(Main) to PC (Sub) => not working

Hi Jeehon,

Unfortunately, the guide I linked is the only EVM user's guide we have for the 812. 

The media converter has two PHYs, the 867 and the 812. Did you check if link was working in both PHYs? If link is working but ping is not that might mean that only one PHY is linking.

When you connect just these two: DP83TC812EVM-MC(Select Matster) <-> DP83TC812EVM-MC(Select Slave) 

Do you see link up in the LEDs? LED1 should light up. 

Best regards,

Melissa

Hi Melissa

Just one of DP83TC812EVM-MCs, It did not find Comport. so I inspect the EVM phyhically there is normal. 

so. I guess  MSP430F5528 SW problem.

How to download sw on  MSP430F5528, Please share binary file and download sw.

Thanks.

Hi Jeehon,

There are some default jumpers that must be populated for USB-MDIO to work. See the picture below.

There are 2 ways to power the board:

1. J22 should be supplied with 5V

2. Supply power through USB. If you do this, J9 must have the jumper populated aswell.

For J2, the PHY can be in either master or slave mode. 

Best regards,

Melissa

Hi Melissa

I have a quesitons

How can I do ?  if  I want to redownlaod firmware software on MSP430F5528

I will design new board like evb, and want to use usb-2mdio sw for new board.

Best regards

Hi Jeehon,

1. Before reflashing the MSP430, please confirm that you have jumpers connecting the pins I circled in red above. You need to have these connections in order for the PHY to be recognized by USB-2-MDIO, especially the 3.3V option for VDDMAC.

If the PHY is not being detected in a new COM port, follow these steps to correctly flash the MSP:

1. Download Uniflash from the TI website

2. Open Uniflash and search from the name of the MSP device (USB1)

3. Load the script

4. Load the Image (attached as 'MSP430-USB2MDIO-CDC.txt')

5. Hit update.

6. Go to Device Manager in your computer and check the PORT section. Check if there is a new device with the label 'USB Serial Device'.

What operating system are you currently using? If it is not windows, you may also have to install our driver: https://software-dl.ti.com/msp430/msp430_public_sw/mcu/msp430/MSP430_FET_Drivers/latest/index_FDS.html

Best regards,

Melissa

Hi Melissa

I have a questions about below lines. 

3. Load the script

   => Which script ? (please explain the script)

4. Load the Image (attached as 'MSP430-USB2MDIO-CDC.txt')

   -> I don't find attached file.

Hi Jeehon,

JEEHOON CHUNG said:

3. Load the script

   => Which script ? (please explain the script)

4. Load the Image (attached as 'MSP430-USB2MDIO-CDC.txt')

Sorry for the confusion, this is what I mean by steps 3 and 4:

3. Upload the image to Uniflash (attached)

4. Select 'load image' and then 'verify image'.

8358.MSP430-USB2MDIO-CDC.txt

Best regards,

Melissa