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MB86961APD-G Datasheet(PDF) 1 Page - Fujitsu Component Limited. |
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MB86961APD-G Datasheet(HTML) 1 Page - Fujitsu Component Limited. |
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1 / 29 page  DECEMBER 1999 DATASHEET MB86961A UNIVERSAL INTERFACE FOR 10BASE -T 1 FEATURES • Full-duplex capability • Combines Manchester encoder/decoder and twisted pair transceiver functions • Direct interface to all popular Ethernet controllers • Direct interface to AUI and 10BASE-T outputs • Manual or automatic AUI /10BASE-T selection • Integrated pulse shaper and Tx/Rx filters • Selectable 100 Ω/150 Ω termination permits opera- tion with shielded or unshielded twisted pair cable • Reverse-polarity detection for receiver with auto- matic correction • On-chip jabber logic, SQE test and link test with enable/disable option • Remote signaling of link down and jabber condi- tions • Programmable receive threshold for extended range • Output drivers for receive, transmit, collision and link test pass LED indicators • TP loopback enable/disable for external loopback testing • Power down mode for minimum power dissipation • Automatic shut-down of unused port to reduce power consumption • Low power CMOS technology, single 5 volt power supply • 44-pin PLCC and 48-pin PQFP packages GENERAL DESCRIPTION The MB86961A Universal Interface for 10BASE-T (Twisted-Pair) Ethernet is fully compliant with the IEEE 802.3 specifications for AUI (Attachment Unit Interface) and 10BASE-T (Twisted-Pair) interfaces and provides the electrical interface between an Ethernet controller and the DB15 (AUI) and RJ45 (10BASE-T) connections to an Ethernet local area network. Functions provided by the MB86961A include Manchester encoding and decoding of the serial data stream, level conversion, collision detec- tion, signal quality error (SQE) and link integrity testing, jabber control, loopback, and automatic correction of polarity reversal on the twisted-pair input. Pulse shaping and filtering functions are performed by the MB86961A to eliminate the need for external filtering components and thus reduce overall system cost. The device also provides outputs for receive, transmit, colli- sion and link test LEDs and provides compatibility with both shielded and unshielded twisted pair cables. The receive threshold can be reduced to allow an extended range between nodes in low noise environments. Its wide range of features and its ability to interface to virtually all popular controllers make the MB86961A the ideal device for twisted pair Ethernet applications. The MB86961A is part of a complete family of Ethernet devices available from Fujitsu. It is fabricated in a low- power CMOS technology and is supplied in a 44-pin PLCC and 48-pin PQFP packages. PIN CONFIGURATION TPIN TPIP UTP TPONB TPONA VCC2 GND2 TPOPA TPOPB PLR RJAB 7 8 9 10 11 12 13 14 15 16 17 RLD LI JAB TEST TCLK TXD TEN CLKO CLKI COL AUTOSEL 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 TOP VIEW 40 41 42 43 44 1 2 3 4 5 6 (PLCC Package Shown) |
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