General Description
The VSC870 serial backplane transceiver has been designed to operate with the VSC880 serial crosspoint switch to establish a synchronous high performance switching system. The VSC870 can also connect directly to another transceiver to act as a high bandwidth backplane interconnect link. The transmitter converts a 32-bit parallel interface operating at 62.5Mb/s to a 34-bit serial data stream operating a 2.125Gb/s. The receiver converts a 34-bit serial interface operating at 2.125Gb/s to a 32-bit parallel interface operating at 62.5Mb/s.
   
Features
• Performs 32-Bit Parallel to Serial and Serial to
    Parallel Functions
• Serial Data Rates are 2.0Gb/s
• Designed in Conjunction with the VSC880 Serial
    Crosspoint Switch
• Performs Bit Alignment, Word Alignment and
    Cell Alignment
• Three Modes of Operation:
    Distributed Control Packet Mode, Central
    Control Cell Mode and Direct Mode
• Support for Multicast and Multiple Input Queues
• Supports Priorities, Camp-on and
    Retransmission Capability in Packet Mode
• Built-in Flow Control Channel in Packet Mode
• Supports Cell Synchronization in Cell Mode
• Interfaces Directly with Industry Standard
    FIFOs
• Contains Redundant Serial I/Os and Internal
    Loopback Mode
• 5V Tolerant TTL Inputs
• Single 3.3V Power Supply
• Available in 192 BGA Package