Description
The MT90732 E2/E3 Framer (E2/E3F) is a CMOS VLSI device that provides the functions needed to frame a wideband payload to one of four CCITT Recommendations. G.742, G.745, G.751, or G.753. The E2/E3 Framer interfaces to line circuitry with either dual rail or NRZ signals. On the terminal side, the interface can be either nibble-parallel or bit-serial.

Features
• Framer for CCITT Recommendations
    - G.742 (8448 kbit/s)
    - G.745 (8448 kbit/s)
    - G.751 (34368 kbit/s)
    - G.753 (34368 kbit/s)
• Line side interface
    - Dual rail or NRZ
• HDB3 codec for dual rail I/O
• Terminal side interface
    - Nibble-parallel
    - Bit-serial
• Transmit reference generator for bit-serial I/O
• Microprocessor or control leads
• I/O port for service bits

Applications
• Line terminals
• Wideband data or video transport
• Test equipment
• Multiplexer systems