AM79C940中文资料PDF规格书
AM79C940规格书详情
GENERAL DESCRIPTION
The Media Access Controller for Ethernet (MACE) chip is a CMOS VLSI device designed to provide flexibility in customized LAN design. The MACE device is specifically designed to address applications where multiple I/O peripherals are present, and a centralized or system specific DMA is required. The high speed, 16-bit synchronous system interface is optimized for an external DMA or I/O processor system, and is similar to many existing peripheral devices, such as SCSI and serial link controllers.
The MACE device is a slave register based peripheral. All transfers to and from the system are performed using simple memory or I/O read and write commands. In conjunction with a user defined DMA engine, the MACE chip provides an IEEE 802.3 interface tailored to a specific application. Its superior modular architecture and versatile system interface allow the MACE device to be configured as a stand-alone device or as a connectivity cell incorporated into a larger, integrated system.
DISTINCTIVE CHARACTERISTICS
■ Integrated Controller with Manchester encoder/decoder and 10BASE-T transceiver and AUI port
■ Supports IEEE 802.3/ANSI 8802-3 and Ethernet standards
■ 84-pin PLCC and 100-pin PQFP Packages
■ 80-pin Thin Quad Flat Pack (TQFP) package available for space critical applications such as PCMCIA
■ Modular architecture allows easy tuning to specific applications
■ High speed, 16-bit synchronous host system interface with 2 or 3 cycles/transfer
■ Individual transmit (136 byte) and receive (128 byte) FlFOs provide increase of system latency and support the following features:
— Automatic retransmission with no FIFO reload
— Automatic receive stripping and transmit padding (individually programmable)
— Automatic runt packet rejection
— Automatic deletion of collision frames
— Automatic retransmission with no FIFO reload
■ Direct slave access to all on board configuration/status registers and transmit/ receive FlFOs
■ Direct FIFO read/write access for simple interface to DMA controllers or l/O processors
■ Arbitrary byte alignment and little/big endian memory interface supported
■ Internal/external loopback capabilities
■ External Address Detection Interface (EADI™) for external hardware address filtering in bridge/router applications
■ JTAG Boundary Scan (IEEE 1149.1) test access port interface for board level production test
■ Integrated Manchester Encoder/Decoder
■ Digital Attachment Interface (DAI™) allows by-passing of differential Attachment Unit Interface (AUI)
■ Supports the following types of network interface:
— AUI to external 10BASE2, 10BASE5 or 10BASE-F MAU
— DAI port to external 10BASE2, 10BASE5, 10BASE-T, 10BASE-F MAU
— General Purpose Serial Interface (GPSI) to external encoding/decoding scheme
— Internal 10BASE-T transceiver with automatic selection of 10BASE-T or AUI port
■ Sleep mode allows reduced power consumption for critical battery powered applications
■ 5 MHz-25 MHz system clock speed
■ Support for operation in industrial temperature range (–40°C to +85°C) available in all three packages
产品属性
- 型号:
AM79C940
- 制造商:
AMD
- 制造商全称:
Advanced Micro Devices
- 功能描述:
Media Access Controller for Ethernet(MACE)
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
AMD |
23+ |
NA/ |
3671 |
原装现货,当天可交货,原型号开票 |
询价 | ||
AMD |
2020+ |
TQFP |
80000 |
只做自己库存,全新原装进口正品假一赔百,可开13%增 |
询价 | ||
AMD |
99+ |
PQFP-100P |
95 |
一级代理,专注军工、汽车、医疗、工业、新能源、电力 |
询价 | ||
AMD |
2016+ |
QFP |
6528 |
只做进口原装现货!或者订货,假一赔十! |
询价 | ||
AMD |
04+ |
QFP |
6 |
询价 | |||
AMD |
2022 |
QFP |
56 |
原装库存特价销售 |
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 |
17+ |
QFP |
9988 |
只做原装进口,自己库存 |
询价 | ||
AMD |
5 |
公司优势库存 热卖中!! |
询价 | ||||
AMD |
2138+ |
QFP |
8960 |
专营BGA,QFP原装现货,假一赔十 |
询价 |
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