Exar Corporation XRT86SH328
The XRT86SH328 is an integrated VT/TU Mapper with 28 port T1/E1 Line Interface Units. The XRT86SH328 contains integrated DS1/E1/J1 Framers for performance monitoring. The XRT86SH328 processes the Section, Line and Path overhead in the SONET/SDH data-stream.| Part No. | XRT86SH328 |
|---|---|
| Datasheet | XRT86SH328 Download |
| Manufacturer |  Exar Corporation |
| Description | VT/TU MAPPER AND M13 MULTIPLEXER |
| Buy | Stock & Price |
GENERAL DESCRIPTION
1GENERAL DESCRIPTION
The processing of path overhead bytes within the STS-1s or TUG-3s include 64 bytes (of buffer) for storing the (Section Trace and Path Trace) messages. Path Overhead bytes can be accessed either by on-chip registers or a Serial Output Port. Each of the 28 T1 or E1 Channels use an internal DeSynchronizer circuit with an internal pointer leak algorithm. This removes the jitter due to mapping and pointer adjustments from the T1 or E1 signals that are de-mapped from the incoming SONET/SDH datastream. These De-Synchronizer circuits do not need any external clock references for its operation. The Transmit Blocks permit flexible insertion of TOH and POH bytes via both Hardware and Software control. The Receive Blocks receive a SONET STS-1 signals or an SDH STM-1 signal and performs the necessary Transport and Path Overhead Processing. A PRBS Pattern Generator and Receiver is implemented within each of the 28 T1/E1 channels in order to implement and measure Bit-Error performance.
