This core is a highly integrated solution tailored for Gigabit Ethernet and Fibre Channel transceiver applications. It incorporates all necessary components such as high-speed drivers, clock recovery, DLL and PLL architectures, serializer/deserializer (SERDES), low jitter PECL interfaces, and data alignment features. Designed for inherently full duplex operation, it supports a 1.25 Gbps data rate, compliant with IEEE 802.3z standards. The transceiver offers a programmable receive cable equalization without the need for external loop filter capacitors and minimizes transmit jitter through its advanced equalization techniques. With embedded bit error rate testing capabilities and a low-cost CMOS implementation, it efficiently supports 75 and 50 Ohm terminations, thereby enhancing its versatility in various high-speed networking applications.