78P2351 Overview
The 78P2351 is Teridian’s second generation Line Interface Unit (LIU) for 155 Mbps (OC-3, STS-3, or STM-1) and 140 Mbps PDH (E4) tele interfaces. The device is a 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 transceiver module using NRZ coding.
78P2351 Key Features
- ITU-T G.703 pliant cable driver for 139.264 Mbps or 155.52 Mbps CMI-coded coax transmission
- Integrated adaptive CMI equalizer and CDR in receive path handles over 12.7dB of cable loss
- Serial, LVPECL-patible system interface with integrated CRU in transmit path for flexible NRZ to CMI conversion
- 4-bit parallel CMOS system interface with master and slave Tx clock modes
- Selectable LVPECL patible NRZ media interface for 155.52 Mbps optical transmission
- Configurable via HW control pins or 4-wire serial interface
- Receiver Loss of Signal (LOS) detection patible with ITU-T G.783
- Operates from a single 3.3V supply
- 100-pin JEDEC LQFP
- 4 REFERENCE CLOCK
