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AM79C981JC规格书详情
GENERAL DESCRIPTION
The Integrated Multiport Repeater Plus (IMR+) chip is a VLSI circuit that provides a system-level solution to designing a compliant 802.3 repeater incorporating 10BASE-T transceivers. The device integrates the Repeater functions specified by Section 9 of the IEEE 802.3 standard and Twisted-Pair Transceiver functions complying with the 10BASE-T standard. The Am79C981 provides eight integral twisted-pair medium attachment units (MAUs) and an attachment unit interface (AUI) port in an 84-pin plastic leaded chip carrier (PLCC).
DISTINCTIVE CHARACTERISTICS
■ Enhanced version of AMD’s Am79C980 Integrated Multiport Repeater™ (IMR™) chip with the following enhancements:
— Additional management port features
— Minimum mode provides support for an extra four LED outputs per port for additional status in non-intelligent repeater designs
— Pin/socket-compatible with the Am79C980 IMR chip
— Fully backward-compatible with existing IMR device designs
■ Interfaces directly with the Am79C987 HIMIB™ device to build a fully managed multiport repeater
■ CMOS device features high integration and low power with a single +5 V supply
■ Repeater functions comply with IEEE 802.3 Repeater Unit specifications
■ Eight integral 10BASE-T transceivers utilize the required predistortion transmission technique
■ Attachment unit interface (AUI) port allows connectivity with 10BASE-5 (Ethernet) and 10BASE-2 (Cheapernet) networks, as well as 10BASE-F and/or Fiber Optic Inter-Repeater Link (FOIRL) segments
■ On-board PLL, Manchester encoder/decoder, and FIFO
■ Expandable to increase number of repeater ports
■ All ports can be separately isolated (partitioned) in response to excessive collision conditions or fault conditions
■ Network management and optional features are accessible through a dedicated serial management port
■ Twisted-pair Link Test capability conforming to the 10BASE-T standard.The receive Link Test function can be optionally disabled through the management port to facilitate interoperability with devices that do not implement the LinkTest function
■ Programmable option of Automatic Polarity Detection and Correction permits automatic recovery due to wiring errors
■ Full amplitude and timing regeneration for retransmitted waveforms
■ Preamble loss effects eliminated by deep FIFO
产品属性
- 型号:
AM79C981JC
- 制造商:
AMD
- 制造商全称:
Advanced Micro Devices
- 功能描述:
Integrated Multiport Repeater Plus⑩(IMR+⑩)
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
AMD |
22+ |
PLCC |
3500 |
原装现货,可开13%税票 |
询价 | ||
23+ |
PLCC84 |
18000 |
询价 | ||||
AMD/Advanced Micro Devices, In |
PLCC |
203 |
优势代理渠道,原装正品,可全系列订货开增值税票 |
询价 | |||
AMD |
94+ |
84PLCC |
75 |
一级代理,专注军工、汽车、医疗、工业、新能源、电力 |
询价 | ||
AMD |
20+/21+ |
DIP |
5600 |
全新原装进口价格优惠 |
询价 | ||
AMD |
22+ |
PLCC84 |
933 |
原厂原装,价格优势!13246658303 |
询价 | ||
AMD |
23+ |
原厂原包 |
19960 |
只做进口原装 终端工厂免费送样 |
询价 | ||
AMD |
23+ |
(PLCC) |
880000 |
明嘉莱只做原装正品现货 |
询价 | ||
AMD |
2016+ |
PLCC84 |
6528 |
只做进口原装现货!假一赔十! |
询价 | ||
AMD |
21+ |
PLCC |
12588 |
原装正品,自己库存 假一罚十 |
询价 |