AM79C98JC Advanced Micro Devices, AM79C98JC Datasheet
AM79C98JC
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AM79C98JC Summary of contents
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FINAL Am79C98 Twisted-Pair Ethernet Transceiver (TPEX) DISTINCTIVE CHARACTERISTICS CMOS device provides compliant operation and low operating current from a single +5 V supply Power Down mode provides reduced power consumption for battery-powered applications. Reset capability allows use in remote MAU ...
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BLOCK DIAGRAM 2 Am79C98 14395D-1 ...
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RELATED AMD PRODUCTS Part No. Description Am7996 IEEE-802.3/Ethernet/Cheapernet Tap Transceiver Am79C100 Twisted-Pair Ethernet Transceiver Plus (TPEX+) Am79C90 CMOS Local Area Network Controller for Ethernet (C-LANCE) Am79C900 Integrated Local Area Communications Controller Am79C940 Media Access Controller for Ethernet (MACE Am79C960 PCnet-ISA ...
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AMD LOGIC SYMBOL Attachment Unit Interface (AUI TXD+ DO+ TXP+ DO– DI+ TXD– TXP– DI– CI+ RXD+ Am79C98 CI– RXD– SQE TEST LNKST TEST RXPOL REXT XMT PRDN/RST RCV Am79C98 Twisted ...
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ORDERING INFORMATION Standard Products AMD standard products are available in several packages and operating ranges. The order number (valid combination) is formed by a combination of the elements below. AM79C98 DEVICE NUMBER/DESCRIPTION Am79C98 Twisted-Pair Ethernet Transceiver (TPEX) Valid Combinations AM79C98 ...
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PIN DESCRIPTION AV DD Analog Power This pin supplies + analog portions of the TPEX circuitry Analog Ground This pin is the ground reference for analog portions of the TPEX circuitry. CI+, CI– Control In Output ...
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TEST Test Input, Active HIGH This pin should be tied HIGH for normal operation. If this pin is driven LOW, TPEX will enter Loopback Test mode. The type of loopback is determined by the state of the SQE TEST pin. ...
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FUNCTIONAL DESCRIPTION The Twisted-Pair Ethernet Transceiver (TPEX) com- plies with the requirements specified by the IEEE 802.3 standard for the attachment unit interface (AUI) and the standard for 10BASE-T medium attachment unit (MAU). TPEX also implements a number of features ...
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The polarity detection/correction algorithm will remain “armed” until two consecutive packets with valid ETD of identical polarity are detected. When “armed,” the re- ceiver is capable ...
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In both modes, the jabber circuitry, collision detection, and collision oscillator functions are disabled and the AUI and RXD+/– squelch circuits are active. TPEX External Components Figure 1 shows a typical twisted-pair port external components schematic. The resistors used should ...
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AMD 12 Am79C98 ...
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Table 1. TPEX Compatible Media Interface Modules Manufacturer Part # Bel Fuse A556-2006-DE Bel Fuse 0556-2006-00 Bel Fuse 0556-2006-01 Valor Electronics PT3877 Valor Electronics PT3983 Valor Electronics FL1012 Nano pulse NP6612 Nano pulse NP6581 Nano pulse NP6696 TDK TLA 470 ...
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AMD ABSOLUTE MAXIMUM RATINGS Storage Temperature Ambient Temperature Under Bias: Supply Voltage ( ...
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DC CHARACTERISTICS (continued) Parameter Symbol Parameter Description Twisted Pair Interface I Input Current at RXD+/– IRXD R RXD+/– Differential Input RXD Resistance V RXD+, RXD– Open Circuit Input TIVB Voltage (Bias) V Differential Mode Input TIDV Voltage Range (RXD+/–) V ...
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AMD SWITCHING CHARACTERISTICS over COMMERCIAL Parameter Symbol Parameter Description Transmit Timing t DO Pulse Width PWODO Accept/Reject Threshold t DO Pulse Width PWKDO Maintain/Turn-Off Threshold t Transmit Start Up Delay TON t Transmit Static Propagation TSD Delay (DO to TXD) ...
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SWITCHING CHARACTERISTICS (continued) Parameter Symbol Parameter Description Receive Timing t RXD Pulse Width PWKRD Maintain/Turn-Off Threshold t Receiver Start Up Delay RON (RXD to DI+/–) t First Validly Timed Bit RVB on DI+/– (RXD to DI) t Receiver Static Propagation ...
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SWITCHING WAVEFORMS t PWPLP TXD+ TXP+ TXD– TXP– t PWLP SWITCHING TEST CIRCUITS TXD+ TXD– Includes test jig capacitance TXP+ TXP– Includes test jig capacitance t PWPLP t PERLP TP Idle Link Test Pulse DV DD 294 Test Point 294 ...
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RECEIVE TEST CIRCUIT DI+ DI– CI+ CI– – RXD + / – t CON – – t SQED – SQE Test Timing (SQE^Test Pin Connected ...
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... Copyright © 1998 Advanced Micro Devices, Inc. All rights reserved. AMD, the AMD logo, and combinations thereof are trademarks of Advanced Micro Devices, Inc. Am186, Am386, Am486, Am29000, b IMR, eIMR, eIMR+, GigaPHY, HIMIB, ILACC, IMR, IMR+, IMR2, ISA-HUB, MACE, Magic Packet, PCnet, PCnet- FAST , PCnet- FAST +, PCnet-Mobile, QFEX, QFEXr, QuASI , QuEST, QuIET, TAXIchip, TPEX, and TPEX Plus are trademarks of Advanced Micro Devices, Inc ...