The PM5319 ARROW-622 is a part of Microchip's portfolio of SONET/SDH Metro transport framers and mappers, supporting interface rates between OC-3/STM-1 (155.52 Mbit/s) and OC-12/STM-4 (622.08 Mbit/s). In addition, it integrates a flexible three-port DS3/E3/EC-1 interface supporting mapping/demapping of DS3/E3 into/from STS-1, AU-3 or TU-3. Applications • SONET/SDH Add/Drop Multiplexers • Terminal Multiplexers • Customer Premise Equipment • Media Gateways • Multiservice Provisioning Platforms • Channelized Router Interfaces • Digital Cross-Connects