The PI90SD1636A is a single chip, Gigabit Ethernet transceiver. It performs all the functions of the Physical Medium Attachment (PMA) portion of the Physical layer, as specified by the IEEE 802.3z Gigabit Ethernet standard. These functions include parallelto-serial and serial-to-parallel conversion, clock generation, clock data recovery, and word synchronization. In addition, an internal loopback function is provided for system debugging. The PI90SD1636A is ideal for Gigabit Ethernet, serial backplane and proprietary point-to-point applications. The device supports 1000BASE-LX and 1000BASE-SX fiber-optic media, and 1000BASE-CX copper media.