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XRT86SH328 Datasheet(PDF) 5 Page - Exar Corporation |
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XRT86SH328 Datasheet(HTML) 5 Page - Exar Corporation |
5 / 159 page XRT86SH328 5 REV. 1.0.1 SONET TO 28-T1/21-E1 PDH MAPPER - VOYAGER PIN AND ARCHITECTURE DESC SONET/SDH Transmitter • Performs standard STS1/STS3 or STM-0/STM-1 transmit processing. • Conforms to ITU-T I.432, ANSI T1.105, and Bellcore-253 • Provides a 51.84MHz STS1/STM-0 serial LVCMOS/LVTTL interface or 6MHz/19MHz 8-bit STS1/STS3 or STM-0/STM-1 telecom bus parallel interface. • Performs SONET/SDH frame insertion and accepts external frame synchronization. • Performs optional transmit data scrambling. • Performs POH/HP, SONET/SDH OH generation/insertion. • Generates transmit payload pointer (H1, H2) (fixed at 522) with NDF insertion. • Inserts A1/A2 with optional error mask. • Computes and inserts BIP-8 (B1, B2) with optional error mask. • Generates AIS-L/HP-AIS, REI-L/HP-REI and RDI-L/HP-RDI according to receiver state with option of SW or HW insertion. • Inserts LOS, forces SEF by software. • Generates RDI-P/LP-RDI and REI-P/LP-REI automatically with optional SW or HW override. • Inserts fixed-stuff columns, calculates and inserts B3 error code. SONET/SDH Receiver • Performs standard STS1/STS3 or STM-0/STM-1 receive processing. • Conforms to ITU-T I.432, ANSI T1.105, and Bellcore-253. • Provides fully programmable threshold detection for SD and SF conditions. • Provides a 51.84MHz STS1/STM-0 serial LVCMOS/LVTTL interface or 6MHz/19MHz 8-bit STS1/STS3 or STM-0/ STM-1 telecom bus parallel interface. • Provides Section Trace buffer with mismatch detection and invalid message detection. • Performs SONET/SDH frame synchronization. • Supports NDF, positive stuff and negative stuff for pointer processor. • Performs receive data de-scrambling. • Performs POH/HP, SONET/SDH OH interpretation/extraction. • Interprets payload pointer (H1, H2). • Detects Out Of Frame (OOF), Loss Of Frame (LOF), Loss Of Signal (LOS), APS failure. • Detects Line Alarm Indication(L-AIS/HP-AIS), Line remote Defect Indication (L-RDI/HP-RDI), Loss Of Pointer. • Detects Path/High-Order Path Alarm Indication Signal, Remote Defect Indication, Extended RDI. • Provides C2 byte signal label monitor with Payload Loss Mistmatch (PLM-P/HP-PLM) detection. • Supports Path/High Order Trace buffer with Trace Identifier Mismatch (TIM-P/HP-TIM) and invalid message detection. • Computes and compares B3, REI-L/HP-REI and REI-P/LP-REI errors. • Computes and compares BIP-8 (B1, B2) and counts the errors. |
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