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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
Dual Channel DS1 Framer
DS1FR (GC7902)
    The DS1FR provides the features of automatically sophisticated super-framer (SF) and extended super-frame (ESF) framing synchronization, a gapped clock system interface option, and MVIP mode system interface. SF mimic susceptibility, SF loop-up/down detecĀ­tion are also addressed in this part. The DS1FR supports 100-pin LQFP package.

Key Features
 
1.
Framing Formats
-
Complied with ANSI T1.403.CORE -1998
-
Unframed, transparent framing mode
-
DS1 extended superframe (ESF)
-
DS1 superframe (SF): D4
2.
Line Codes
-
Alternate Mark Inversion (AMI)
-
Binary Eight Zero Code Suppression (B8ZS)
-
Zero Code Suppression (ZCS)
-
Non-Return Zero (NRZ) option
-
Full-duplex HDLC controller with dual 64-byte FIFO
3.
System Bus Interface
-
Bus Clock Rate
a.
1.544 Mbit/s Transmission
b.
2.048 Mbit/s MVIP
-
Bus Formats
a.
AT&T 1.544 Mbit/s PCM Connection Highway Interface
b.
Multi-Vendor Integration Protocol
4.
2 Frame transmit and receive slip buffers
5.
Bit-oriented code insertion/detection
6.
4/16 state signaling

Product Applications
 
1.
SONET/SDH Add/Drop multiplexers
2.
DS1 multiplexers
3.
DS1 and fractional DS1 CSUs
4.
Inverse Multiplexers for ATM products
5.
LAN routers with integrated DS1 interfaces
6.
DS1 Internet access equipment
7.
Multichannel DS1 test equipment, repeaters and switches

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