MT90732

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 bitserial. The MT90732 can be operated with or without a microprocessor. When interfaced with a microprocessor, the E2/E3 Framer provides an 8- byte memory map for control, performance counters and alarm status. The MT90732 provides a transmit and receive interface port for accessing the overhead bits from each of the four recommendations. The overhead bits of MT90732 can also be accessed by the microprocessor via the memory map.