78P2352

78P2352 Dual Channel OC-3/ STM1-E/ E4 LIU TARGET DATASHEET www.DataSheet4U.com MARCH 2003 DESCRIPTION The 78P2352 is TDK’s second generation LIU for 155 Mbit/s SDH/SONET (OC-3, STS-3, or STM-1) and 140Mbit/s PDH (E4) applications. The device is a dual channel, single chip solution that includes an integrated CDR in the transmit path for flexible NRZ to CMI conversion. The device can interface to 75Ω coaxial cable using CMI coding or directly to a fiber optics module using NRZ coding. The 78P2352 is compliant with all respective ANSI, ITU-T, and Telcordia standards for jitter tolerance, generation, and transfer. APPLICATIONS Central Office Interconnects DSLAMs Add Drop Multiplexers (ADMs) PDH/SDH test equipment FEATURES BLOCK DIAGRAM EACH CHANNEL: Tx TXxCKP/N CMIxP/N SIxCKP/N PIxCK PIx[3:0]D PTOxCK SOxCKP/N SOxDP/N POx[3:0]D POxCK CMI-LCV Detect EACH CHANNEL: Rx CMI Decoder Rx CDR Lock Detect Adaptive Eq. G.775 LOS Detect RXxP/N FIFO CMI Encoder ECLxP/N G.703 compliant line interface for 139.264 Mbps or 155.52 Mbps CMI-coded coax transmission. LVPECL compatible line interface for 155.52 Mbps NRZ-coded fiber applications. Integrated adaptive CMI equalizer and CDR in receive path. Serial, LVPECL-compatible system interface with integrated CDR in transmit path for NRZ to CMI conversion. 4-bit parallel CMOS system interface with master/slave Tx clock modes. Configurable via HW control pins or 4-wire µP interface Operates from a single reference c...