HD3SS3412: Position of ac coupling capacitor

Masahito Takei

Intellectual 300 points

Part Number: HD3SS3412

HD3SS3412 is placed between the AURORA interfaces of the FPGA.

The AC coupling capacitor is located on the RX side. The bias on the TX side is within 2V.

The capacitor is placed at a different position from Fig. 11 in the data sheet. Is this okay?

Please answer by 7/16, 8:00 AM Japan time.

Below is the connection diagram.

Thank you,

over 4 years ago

0 Masahito Takei over 4 years ago

Intellectual 300 points

I updated the figure. Please refer to the following.

Each FPGA is on a different board and connects with a connector and a cable.

The red frame is different from Figure 11 of the data sheet. Is there no problem with this connection?

+1 Malik Barton57 over 4 years ago in reply to Masahito Takei

TI__Guru 64326 points

Hi,

HD3SS3412 performance will not be impacted by this AC coupling capacitor placement. AC cap on Port A is fine, see figure 12 in datasheet. As long as appropriate bias is provided from FPGA TX it should work.

0 Masahito Takei over 4 years ago in reply to Malik Barton57

Intellectual 300 points

Thank you for your quick reply.

I was relieved.

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HD3SS3412: Position of ac coupling capacitor