Configuring Arria V Transceiver PLL for 2.5G Ethernet - Configuring Arria V Transceiver PLL for 2.5G Ethernet Hello, I want to use the Multi-rate Ethernet IP at 2.5G on an Arria V device The datasheet mentions that rx_clkout will be derived from tx_serial_clk: And it seems like I’ll need to use a Transceiver PLL that operates at 1562.5 MHz. How do I need to configure the Arria V Transceiver PLL to make it output a clock at 1562.5 MHz? What PLL base data rate should be used ? Replies: Re: Configuring Arria V Transceiver PLL for 2.5G Ethernet Hello, I’m glad that your question has been addressed, I now transition this thread to community support. If you have a new question, feel free to open a new thread to get the support from Altera experts. Otherwise, the community users will continue to help you on this thread. Thank you. Regards, Pavee Replies: Re: Configuring Arria V Transceiver PLL for 2.5G Ethernet Hello, After checking on this, here's the connection guideline: The proper connections are to connect "fboutclk" to "pll_fbclk" and to leave "hclk" open. Hope I've answered your query. Regard, Pavee Replies: Re: Configuring Arria V Transceiver PLL for 2.5G Ethernet That's exactly what I did: And the PLL is generated as follows: How should I connect the following ports ? 1. pll_fbclk (input) 2. fboutclk (output) 3. hclk (output) Replies: Re: Configuring Arria V Transceiver PLL for 2.5G Ethernet Hello, Quartus will help on configuring PLL automatically. Complete the following steps to configure a Transceiver PLL IP Core: 1. Under Tools > IP Catalog, select the device family of your choice. 2. Under Tools > IP Catalog > Interface Protocols > Transceiver PHY> Transceiver PLL . 3. Specify the options required for the PLL. 4. Click Finish to generate your parameterize Transceiver PLL IP Core. Regards, Pavee Replies: Re: Configuring Arria V Transceiver PLL for 2.5G Ethernet Thanks for the input. I'm using only 2.5G so I need only one clock. This is my Transceiver PLL component as generated by the IP wizard: I have doubts about how to connect the following singals: 1. pll_fbclk (input) 2. fboutclk (output) 3. hclk (output) Replies: Re: Configuring Arria V Transceiver PLL for 2.5G Ethernet Here's the connection required to operates PLL for 2.5G Serial clock from transceiver PLLs. • 2.5GbE: Connect bit [0] to the transceiver PLL. This clock operates at 1562.5 MHz • 1GbE: Connect bit [1] to the transceiver PLL. This clock operates at 625 MHz. • 10GbE: Connect bit [2] to the transceiver PLL. This clock operates at 5156.25 MHz. Kindly refer to https://www.intel.com/content/www/us/en/docs/programmable/683171/current/clock-and-reset-signals.html for more detailed explanation. Regards, Pavee