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AM79C98PC データシート(PDF) 1 Page - Advanced Micro Devices |
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AM79C98PC データシート(HTML) 1 Page - Advanced Micro Devices |
1 / 22 page FINAL Publication# 14395 Rev: D Amendment/0 Issue Date: May 1994 1 Am79C98 Twisted-Pair Ethernet Transceiver (TPEX) DISTINCTIVE CHARACTERISTICS s CMOS device provides compliant operation and low operating current from a single +5 V supply s Power Down mode provides reduced power consumption for battery-powered applications. Reset capability allows use in remote MAU applications. s Pin-selectable twisted-pair receive polarity detection and automatic inversion of the receive signal. Polarity indication output pin can directly drive an LED. s Pin-selectable twisted-pair Link Integrity Test capability conforming to the IEEE 802.3 standard for 10BASE-T. Link status pin can directly drive an LED. s Internal twisted-pair transmitter digital predistortion circuit reduces medium-induced jitter and ensures compliance with the 10BASE-T transmit and receive waveform requirements s Pin-selectable SQE Test (heartbeat) enable s Transmit and receive status indications are available on separate, dedicated pins s AUI loopback, Jabber Control, and SQE Test functions comply with the 10BASE-T standard IEEE Std 802.3i-1990 GENERAL DESCRIPTION The Am79C98 Twisted-Pair Ethernet Transceiver (TPEX) is an integrated circuit that implements the medium attachment unit (MAU) functions for the twisted-pair medium, as specified by the IEEE 802.3 standard (Type 10BASE-T). This device provides the necessary electrical and functional interface between the IEEE 802.3 standard attachment unit interface (AUI) and the twisted-pair cable. A network based on the 10BASE-T standard can use unshielded twisted-pair cables, providing an economi- cal solution to networking by allowing the use of exist- ing telephone wiring. The Am79C98 provides a minimal component count and cost-effective solution to the design and implementation of 10BASE-T standard networks. TPEX provides twisted-pair driver and receiver circuits, including on-board transmit digital predistortion, re- ceiver squelch, and an AUI port with pin-selectable SQE Test enable. The device also provides a number of additional features, including pin-selectable Twisted- Pair Receive Polarity Detection and Automatic Polarity Reversal, Link Status indication, Link Test disable func- tion, and transmit and receive status. The Twisted-Pair Polarity and Link Status pins can be used to drive LEDs directly. The Am79C98 is fabricated in CMOS technology and requires a single +5 V supply. The device is available in 24-pin SKINNYDIP® plastic dual in-line and 28-pin plastic leaded chip carrier (PLCC) packaging. |
同様の部品番号 - AM79C98PC |
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同様の説明 - AM79C98PC |
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