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Chips
    DS1FR
    P1M8
    P1M16
    P3M3
    P3M1
    EOSM4
    EOSM155
    EOPM4
    EOPM8
    EOPM84
    EODS3
    VLM155S
    VLM155
    XC4
    XC16
    CDR155G(LQFP-32)
    CDR155G-H (LQFP-32)
    CDR155G-H (SOP-28)
    DOHP155T-676
    DOHP155T-320
    DOHP155T-ADM
    MTUP(PQFP-160)
    MTUP (LQFP-128)
    MUX155 (Green Package)

SFP Module
    SFP-101
    SFP-102
    SFP-111
    SFP-112
    SFP-113


Overview
STM-1/STS-3 Dual Bus Ethernet Mapper with 4 ports
EOSM4 (GC68504A-PI)
    The EOSM4 is designed for SONET/SDH add/drop multiplexer, multi-service access platform for unidirectional single/dual ring applications. Up to 4 Ports of Ethernet payload can be mapped/demapped into/from Sonet/SDH Virtual Concatenation Group via the 4 RMII ports. Only SONET/SDH Low Order VC Virtual Concatenation SPE is supported, Virtual Concatenation SPE formats support up to VC12-21v/ VC11-28v. External RAM interface is also provided to compensate transmission delays for different VCG members. The maximum transmission delay EOSM can compensate is ±250ms by 64Mb of external SDRAM.

Key Features
 
1.
Support up to 4 RMII Port, each RMII port can be separately configure to support 10/100M operation
2.
Support Ethernet Frame (RMII) Encapsulation/De-capsulation Protocol of:
-
ITU-T G.7401, Generic Framing Procedure (GFP)
-
ITU-T X.86 Link Access Procedure SDH (LAPS)
3.
Virtual Concatenation Group can support up to VC12-21v or VC11-28v
4.
External RAM Interface is provided to compensate Transmission Delay of different Virtual Concatenation Group Members. Up to ±250ms Differential Transmission Delay can be compensated using 64Mb SDRAM.

Product Applications
 
1.
Multi-Service Ethernet Switch
2.
Multi-Service Ethernet Platform
3.
SONET/SDH Add-Drop Multiplexer

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