2695 - LatticeECP3: Can LatticeECP3's 2.5Gbps Ethernet PCS IP and 2.5Gbps Ethernet MAC IP run together at 1 GbE rates?
The LatticeECP3 2.5 GBE MAC and PCS IPs described in IPUG98 and IPUG99, will run at 1.25 Gbps by changing the ref_clk clock source to 125 Mhz as shown in the "PHY with Host Bus Control Interface" figure of IPUG99. The byte_clk and word_clk will be ...