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IDT77105 Datasheet(PDF) 1 Page - Integrated Device Technology

Part # IDT77105
Description  PHY (TC-PMD) for 25.6 Mbps ATM Networks
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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

IDT77105 Datasheet(HTML) 1 Page - Integrated Device Technology

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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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