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XRT86SH328 Datasheet(PDF) 1 Page - Exar Corporation |
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XRT86SH328 Datasheet(HTML) 1 Page - Exar Corporation |
1 / 159 page Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com XRT86SH328 SONET TO 28-T1/21-E1 PDH MAPPER - VOYAGER PIN AND ARCHITECTURE DESC AUGUST 2008 REV. 1.0.1 GENERAL DESCRIPTION The XRT86SH328 (Voyager) is a physical layer SONET/SDH to PDH mapper/demapper which enables T1/E1 aggregation to STS-3/STM-1 or STS1/ STM0 via standard VT1.5/VT2 or VC-11/VC-12 to AU-3 and TUG-3/AU-4 mapping protocols. Voyager supports all the framing, mapping and grooming functions required for STS-3/STM-1 mapper applications. The device generates and terminates all SONET/SDH Regenerator Section, Multiplexer Section and Path Overhead including the low-order Virtual Container (VC) Path Overhead. T1/E1 framing is transparent; therefore, the device neither generates nor terminates the E1 frame. A single Voyager performs mapping of 28 aysnchrounous T1 spans to VT1.5/STS-1 in SONET or VC-11/TU-11/TUG-2/VC-3/AU-3/STM-0 in SDH. The Voyager can also alternatively map 21 asynchronous E1 spans to VT2/STS-1 or VC-12/TU- 12/TUG-2/VC-3/AU-3/STM-0. Mapping to STS-3/ STM-1 requires (3) Voyager devices with one acting as "master" framer and two acting as "slave" framers. In this configuration, Voyager performs all the necessary framing, pointer processing and mapping functions required for mapping 84 x T1 spans to VT1.5/STS-1/STS-3 in SONET or either VC11/TU11/ TUG-2/VC-3/AU-3/STM1 or VC-11/TU-11/TUG-2/ TUG-3/VC-4/AU-4/STM-1 in SDH. Alternatively, 63 x E1 spans can also be map to VT2/STS-1/STS-3 in SONET or either VC-12/TU-12/TUG-2/VC-3/AU-3/ STM-1 or VC-12/TU-12/TUG-2/TUG-3/VC-4/AU-4/ STM-1 in SDH. FIGURE 1. SIMPLIFIED BLOCK DIAGRAM STS- N TOH Processor JTAG Microprocessor STS- N TOH Processor 28 T1/ 21 E1 Short Haul LIU Tx 28 T1/ 21 E1 Short Haul LIU Rx Cross Connect 28x 28 Rx Cross Connect 28x 28 Tx Mapper + Pointer Proc Rx Mapper + Pointer Proc Tx XRT86SH328 Voyager SONET Path Proc ( POH) Rx Tx SONET Trans- Port Proc ( TOH) Rx SONET Trans- Port Proc ( TOH) Tx Telecom Bus Rx Telecom Bus Tx PLL 2kHz/8kHz Master Slave 19. 44 Mhz SONET OH Drop SONET OH Add Single Input Clock Reference JTAG Port Microprocessor Interface Recovered Line Clock Egress Ingress Telecom Bus or Serial Port Interface Path OH Drop Path OH Add 28 T1/ 21 E1 Ch Tx Framer 28 T1/ 21 E1 Ch Rx Framer 28 T1/ 21 E1 Ch Rx Framer 28 T1/ 21 E1 Ch Tx Framer T1/E1, 2/4/8x VT1.5 VT2 VT1.5 VT2 VT1.5 VT2 VT1.5 VT2 M13 MUX DS-3 Framers SONET Path Proc ( POH) 21x 21 21x 21 Long Haul LBO Diagnostics |
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