78P2351 Overview
Description
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) telecom interfaces. The device is a single chip solution that includes an integrated CDR in the transmit path for flexible NRZ to CMI conversion.
Key Features
- ITU-T G.703 compliant 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-compatible 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 compatible 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 compatible with ITU-T G.783
- Operates from a single 3.3V supply
- 100-pin JEDEC LQFP
