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RC7860

155M ADM multiplex processor (RC7860)

The RC7860 is a 155M dual-optical-port multiplexer, supporting STM-1 overhead processing, TUPP and simple DXC function. The RC7860 is designed for SDH ADM/TM multiplexer or SDH tester.
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    Overview

    The RC7860 is a 155M dual-optical-port multiplexer, supporting STM-1 overhead processing, TUPP and simple DXC function. The RC7860 is designed for SDH ADM/TM multiplexer or SDH tester.

    Features

    • Realizing a 155M dual-optical-port in STM-1 and TUPP function, supporting ADM on one chip
    •  Processing STM-1 frames, RS and MS overhead, AU-4 pointer, VC-4 overhead in two paths
    •  Realizing payload pointer process for no more than 126 TU-12 paths or 6 TU-3 paths, monitoring AIS, LOP
    •  Integrated four-ports Telecom-bus cross-connection to realize VC-12/VC-3/VC-4 space division cross-connect
    •  MP control to realize protect switch for inherent monitor means
    •  Supporting 19.44Mbps parallel line interface as well as serial interface with 155M CDR and CKG
    •  Equipment side bus supporting simplified 38.88Mb/s Telecom-bus interface, connecting MAPPER or DXC chips
    •  Equipment side supporting VC-4/C4 interface
    •  Supporting STM-4 applications with four RC7860 chips and a STM-4 FRAMER
    • Providing one 8.192Mb/s serial overhead bus(SO-bus)interface to support E1,E2,F1,S1,DCC
    •  Providing line side bus, VC-4 overhead and SO-bus loop back for debugging
    •  Performing AIS and RDI process by hardware
    •  Performing EXC and DEG calculation for B2 and B3 by hardware
    •  Providing single octet J0 and 16 octets J1 trail trace function
    •  Providing K1, K2(b1-b5), S1 filtering function
    •  Providing LOS, LOF, LOP, LOM, AIS, RDI, EXC, DEG monitoring function with pin output
    •  Providing error counts for B1,B2,B3,M1,G1,PJE counts and Buffer slipping counts
    •  Supporting Intel 8 bits non-multiplexing processor bus
    •  Providing interrupt control function for programming facility
    •  Direct connection with RC7820, RC7830, RC7851F, RC7870F, S3037, S3026/3028
    •  Compatible with ITU-T G.707 G.783
    •  LQFP176 package, 3.3V power and LV-TTL interface

    Functional Block Diagram

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    Figure 1 Functional Block Diagram

    Application

    • SDH 155M/622M TM/ADM equipment line card
    • Embedded SDH 155M equipment line card
    • SDH tester

     

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