The DS33M30 family of products provides a compact and efficient solution for transporting Gigabit Ethernet traffic over OC-3/STM-1 optical networks. With the addition of an optical transceiver, Ethernet PHY, DDR SDRAM, and host processor, a complete solution of GbE over OC-3/STM-1 can be implemented. The family supports Ethernet over SONET/SDH (EoS) at VC-4, "Next-Generation" EoS higher order mapping with multiple concatenated VC-3s, and Ethernet over PDH over SONET/SDH (EoPoS) with up to three virtually concatenated DS3/E3 tributaries. The supported frame encapsulations include GFP-F, HDLC, cHDLC, and X.86 (LAPS). Applications * Ethernet Service Delivery over SONET/SDH, * LAN Extension * Multi-Service Provisioning Platforms (MSPPs), * Transparent LAN Service, * Support for EoS in One STS-3c/VC-4, EoS Over Up to Three Concatenated STS-1/VC-3s, and EoPoS Over Up to Three Concatenated DS-3s * Two Independent 155.52Mbps SerDes Ports * One 10/100/1000 IEEE 802.3 Ethernet MAC Port * Configurable MII/RMII/GMII MAC Interface * GFP/LAPS/HDLC/cHDLC Encapsulation * IEEE 802.1Q VLAN and Q-in-Q Support * Add/Drop OAM Frames from µP Interface * Quality of Service (QoS) Support * Traffic Policing Through CIR/CBS * Classification Through PCP or DSCP * Supports Up to 512Mb DDR SDRAM Buffer * SPI™ and Parallel Microprocessor Interfaces * 1.8V, 2.5V, 3.3V Supplies