The CT25205 is a comprehensive digital core designed for IEEE 802.3cg® 10BASE-T1S Ethernet applications, incorporating the Physical Medium Attachment (PMA), Physical Coding Sublayer (PCS), and Physical Layer Coordination (PLCA) Reconciliation Sublayers. Written in Verilog 2005 HDL, this IP core is versatile enough to be implemented in standard cells and FPGA systems. It interfaces seamlessly with IEEE Ethernet MACs through a Media Independent Interface (MII), and the PLCA RS supports legacy MACs, enhancing functionality without additional extensions. The PMA is compatible with OPEN Alliance 10BASE-T1S PMD, perfect for Zonal Gateways and MCUs in advanced network architectures.