Description
The Quad T1 Mapper device is designed for add/drop multiplexer, terminal multiplexer, and dual and single unidirectional ring applications.
Features
- Add/drop four 1.544 Mbit/s signals from an STS-1, an STS-3/AU-3, or an STM-1 VC-4.
- Independent add and drop bus timing modes.
- Selectable AMI or B8ZS positive/negative rail or NRZ T1 interface. Performance counter provided for coding violations.
- Digital desynchronizer reduces systemic jitter in the presence of multiple pointer movements. A register is also provided to control the internal FIFO leak rate.
- Drop buses are monitored for parity, loss of cl.