DP83822EVM: How to connect TRSL-7110ACG

Hello GARETH OU

Thank you for the query.

Can you please ask customer to provide a simple diagram on the connection made to review and provide suggestions.

Regards,

Sreenivasa

Hi Kallikuppa

The customer's main control board (L-shaped circuit board assembly in the picture), the chip is AX58100, which is an EtherCAT Slave chip There is MAC inside, it can work by connecting MII signal to PHY As attached Figure 1 Figure 2 shows the connection of MII signal and MCLK signal to DP83822 EVM 3.3V power supply is provided by the main control board GND is also connected to the main control board To test that the RJ45 connection is available The fiber optic transceiver TRSL-7110ACG is currently connected, and the SD is also connected It should be the part of Bootstrap Options. I don’t know how to set it. Please guide how to set up to make the optical transceiver work normally thanks

Hello GARETH OU

Thank you for the input.

As i review the inputs, please review the TI design below where one of the option we have is the fiber interface.

https://www.ti.com/tool/TIDA-00928

https://www.ti.com/tool/TIDA-00496

Regards,

Sreenivasa 

Hello GARETH OU

Did the above inputs help ?

Regards,

Sreenivasa

Hi Kallikuppa

Customers use TIDA-00928 this document web page reference,

Also modify his DP83822 EVM according to the file, but it still doesn’t work

Hello GARETH OU

Thank you.

Can you please request to confirm the device is strapped for fiber mode.

Regards,

Sreenivasa

Hello GARETH OU

Customer can use the below register

Table 8-24. 0x000A Control Register #2 (CR2)

register for fiber_en

Bit 14,  100Base-FX Enable 

Regards,

Sreenivasa

Hi Kallikuppa

Do DP83822 and DP83869 support TX_CLK fixed ?

Hello GARETH OU

Thank you for checking. Can you please elaborate your question and the use case.

Regards,

Sreenivasa

Hi Kallikuppa

Customers found the DP83869EVM on the TI website to meet their needs, and there are also optical fiber connectors on the EVM, which can directly perform functional testing Datasheet found that there is also a Bridger function I would like your help to confirm whether DP83869EVM supports TX_CLK fixed phase The AX58100 chip used by the customer mentioned that it needs to support TX_CLK fixed phase

Hello GARETH OU

Thank you for the reply.

I am trying to understand what customer means by fixed clock.

TRANSMIT DATA: Signal TX_D[3:0] carries data from the MAC to the PHY in RGMII mode and MII mode. Data is synchronous to the transmit clock. In RGMII mode GTX_CLK is the transmit clock and in MII mode TX_CLK is the transmit clock.

If a fixed phase clock and data is send by the MAC, this should be fine for the PHY.

Regards,

Sreenivasa

Hi Kallikuppa

Can DP83822 use the SFF fiber module TRSL-7110AG?

0820.TRSL-7110ACG.pdf

Hello GARETH OU

This is 3.3V / 1310 nm / 1.25 Gbps module.  I see the min data ate is 1000M.

We have not tested with this module. I would encourage you to test the communication.

Regards,

Sreenivasa

Hello GARETH OU

We have tested the below module 

DPLOCK 86186

Regards,

Sreenivasa

Hi Kallikuppa

Customer is looking for other fiber modules and testing if it works

Hello GARETH OU

Thank you for the update.

Regards,

Sreenivasa

Hello GARETH OU

Do you have any update.

Regards,

Sreenivasa

Hi Kallikuppa

Now customers are testing and looking for new fiber optic transceivers I'll let you know when there's a new update

 Thanks you