The DS3161, DS3162, DS3163, and DS3164 (DS316x) integrate ATM cell/HDLC packet processor(s) with DS3/E3 framer(s) to map/demap ATM cells or packets into as many as four DS3/E3 digital lines with DS3-framed, E3-framed, or clear- channel data streams on per-port basis. Applications * Access Concentrators * ATM and Frame Relay Equipment * Digital Cross-Connects * Integrated Access Device (IAD) * Multiservice Access Platform (MSAP) * Multiservice Protocol Platform (MSPP) * PBXs * PDH Multiplexer/Demultiplexer * Routers/Switches * SONET/SDH ADM * SONET/SDH Muxes * Test Equipment * Single (DS3161), Dual (DS3162), Triple (DS3163), or Quad (DS3164) ATM/Packet PHYs for DS3, E3, and Clear-Channel 52Mbps (CC52) * Pin Compatible for Ease of Port Density Migration in the Same PC Board Platform * Each Port Independently Configurable * Universal PHYs Map ATM Cells and/or HDLC Packets into DS3 or E3 Data Streams * UTOPIA L2/L3 or POS-PHY™ L2/L3 or SPI-3 Interface with 8-, 16-, or 32-Bit Bus Width * 66MHz UTOPIA L3 and POS-PHY L3 Clock * 52MHz UTOPIA L2 and POS-PHY L2 Clock * Ports Independently Configurable for Cell or Packet Traffic in POS-PHY Bus Modes * Direct, PLCP, DSS, and Clear-Channel Cell Mapping * Direct and Clear-Channel Packet Mapping * On-Chip DS3 (M23 or C-Bit) and E3 (G.751 or G.832) Framer(s) * Ports Independently Configurable for DS3, E3 (Full or Subrate) or Arbitrary Framing Protocols Up to 52Mbps * Programmable (Externally Controlled or Internally Finite State Machine Controlled) Subrate DS3/E3