AM79C100 Datasheet PDF | Advanced Micro Devices

Advanced Micro Devices AM79C100

The Am79C100 Twisted-Pair Ethernet Transceiver Plus (TPEX Plus) is an integrated circuit that implements the medium attachment unit (MAU) functions for the twisted-pair medium, as speciﬁed by the supplement to 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. The Am79C100 provides a minimal component count and a cost-effective solution to the design and implementation of 10BASE-T standard networks.

Part No.	AM79C100
Datasheet	AM79C100 Download
Manufacturer	Advanced Micro Devices
Description	Twisted-Pair Ethernet Transceiver Plus (TPEX Plus)
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GENERAL DESCRIPTION

A network based on the 10BASE-T standard can use unshielded twisted-pair cables, providing an economical solution to networking by allowing the use of existing telephone wiring. TPEX Plus provides twisted-pair driver and receiver circuits, including on-board transmit digital predistortion, receiver squelch, and an AUI port with pin-selectable SQE Test enable. The device provides a number of additional features, including Link Status indication with automatic twisted-pair receive polarity detection/ correction and indication; pin-selectable receive threshold programming for extended distance line lengths; and Receive Carrier Sense, Transmit Active and Collision Present indications. The device provides separate twisted-pair Link Status, Polarity Status, Receive, Transmit, and Collision outputs to drive LEDs directly. Publication# 16511 Rev: B Amendment/0 Issue Date: May 1994 1 AMD BLOCK DIAGRAM TEST1 TEST2 XMT COL RCV RXPOL LNKST LED Driver Logic DO+ DO– Line Receiver...