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IDT77105 Datasheet(PDF) 1 Page - Integrated Device Technology |
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IDT77105 Datasheet(HTML) 1 Page - Integrated Device Technology |
1 / 24 page ![]() 1 of 24 September 11, 2000 2000 Integrated Device Technology, Inc. DSC 3445 PHY (TC-PMD) for 25.6 Mbps ATM Networks Features List Features List Features List Features List ! Performs the PHY-Transmission Convergence (TC) and Physical Media Dependent (PMD) Sublayer functions for 25.6 Mpbs ATM Networks ! Performs clock/data recovery, serializing/deserializing & framing ! ITU-T I.432 and I.432.5 compliant ! ATM Forum af-phy-0040 compliant ! UTOPIA Level 1 Interface ! 2-Cell Transmit & Receive FIFOs ! Supports Multi PHY Connections ! LED Interface for status signalling ! Supports UTP Category 3 (CAT 3) physical media ! Interfaces to standard magnetics ! Low-Power CMOS ! 64-pin STQFP Package (10 x 10mm) Description Description Description Description The IDT77105 is a member of IDT's family of products developed to support Asynchronous Transfer Mode (ATM) data communications and networking. The IDT77105 provides the Transmission Convergence (TC) and (PMD) layers of a 25.6 Mbps ATM PHY suitable for ATM networks using Unshielded Twisted Pair (UTP) Category 3 (or better) wiring. The UTOPIA interface provides standardized control and communications to other components, such as Segmentation and Reas- sembly (SAR) controllers and ATM switches. The IDT77105 supports a simple interface to magnetics modules. The IDT77105 is fabricated using IDT's state-of-the-art CMOS tech- nology, providing the highest levels of integration, performance and reli- ability, with the low-power consumption characteristics of CMOS. Block Diagram Block Diagram Block Diagram Block Diagram TxR ef TxDATA TxSOC TxEN B ALE RxEm pty /CLAV WR B RD B CS ADDR/DATA INT RxDATA RxSOC RxEnb TxFull /CLAV RxRef 2CELL FIFO 9 8 9 UTILITY BUS CONTROLLER 2CELLFIFO SCRAMBLER PRNG DESCRAMBLER 5B/4B DECODER S/P DNRZI 4B/5B ENCODER P/S NRZI CLK REC TXD+ Line Driver TXD- Line RxVR RxD+ RxD- LOOP BACK RESET RxLED TxOSC PLL_Filter_1 PLL_Filter_2 77105 3445 drw 00 TxLED RESET UPLO TxCLK RxCLK IDT77105 |
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