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RTL8019AS_datasheet

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8019AS.doc 2001-05-10

·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS

1 RTL8019AS Realtek Full-Duplex Ethernet Controller with Plug and Play Function (RealPNP)

SPECIFICATION REALTEK SEMI-CONDUCTOR CO., LTD. HEAD OFFICE NO. 2, INDUSTRY E. RD. IX, SCIENCE-BASED INDUSTRIAL PARK, HSINCHU 30077, TAIWAN, R.O.C. TEL:886-3-5780211 FAX:886-3-5776598 OFFICE 3F, NO. 56, WU-KUNG 6 RD., TAIPEI HSIEN, TAIWAN, R.O.C. TEL: 886-2-22980098 FAX: 886-2-22980094, 22980097

8019AS.doc 2001-05-10

·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS

2CONTENTS

1. FEATURES 3 2. GENERAL DESCRIPTION 4 3. PIN CONFIGURATION 5 4. PIN DESCRIPTION 4.1. Power Pins 6 4.2. ISA Bus Interface Pins 6 4.3. Memory Interface Pins (including BROM, EEPROM) 7 4.4. Medium Interface Pins 8 4.5. LED Output Pins 8 5. REGISTER DESCRIPTIONS 5.1. Group 1: NE2000 Registers 9 5.1.1. Register Table 9 5.1.2. Register Functions 11 5.1.2.1. NE2000 Compatible Registers 11 5.1.2.2. RTL8019AS Defined Registers 16 5.2. Group 2: Plug and Play (PnP) Registers 23 5.2.1. Card Control Registers 24 5.2.2. Logical Device Control Registers 25 5.2.3. Logical Device Configuration Registers 25 6. FUNCTIONAL DESCRIPTIONS 6.1. RTL8019AS Configuration Modes 27 6.2. Plug and Play 29 6.2.1. Initiation Key 29 6.2.2. Isolation Protocol 30 6.2.3. Plug and Play Isolation Sequence 34 6.2.4. Reading Resource Data 35 6.2.5. PnP auto detect mode 36 6.3. 9346 Contents 37 6.4. Boot ROM 38 6.5. LED Behaviors 40 6.6. Loopback Diagnostic Operation 42 6.6.1. Loopback Operation 42 6.6.2. To implement Loopback Test 43 7. Electrical Specification and Timings 7.1. Absolute Maximum Ratings 46 7.2. D.C. Characteristics 46 7.3. A.C. Timing Characteristics 46

8019AS.doc 2001-05-10

·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS

31. FEATURES m 100-pin PQFP m RTL8019 software compatible m Supports PnP auto detect mode (RTL8019AS only) m Compliant to Ethernet II and IEEE802.3 10Base5, 10Base2, 10BaseT m Software compatible with NE2000 on both 8 and 16-bit slots m Supports both jumper and jumperless modes m Supports Microsoft‘s Plug and Play configuration for jumperless mode m Supports Full-Duplex Ethernet function to double channel bandwidth m Supports three level power down modes: - Sleep - Power down with internal clock running - Power down with internal clock halted m Built-in data prefetch function to improve performance m Supports UTP, AUI & BNC auto-detect (RTL8019AS only) m Supports auto polarity correction for 10BaseT m Support 8 IRQ lines m Supports 16 I/O base address options 󰀀 and extra I/O address fully decode mode (RTL8019AS only) m Supports 16K, 32K, 64K and 16K-page mode access to BROM (up to 256 pages with 16K bytes/page)

m Supports BROM disable command to release memory after remote boot m Supports flash memory read/write (RTL8019AS only) m 16k byte SRAM built in (RTL8019AS only) m Use 9346 (64*16-bit EEPROM) to store resource configurations and ID parameters m Capable of programming blank 9346 on board for manufacturing convenience m Support 4 diagnostic LED pins with programmable outputs

8019AS.doc 2001-05-10

·ç¬R¥b¾ÉÅéªÑ¥÷¦³--¤½¥q SPECIFICATION RTL8019AS

42. General Description The RTL8019AS is a highly integrated Ethernet Controller which offers a simple solution to implement a Plug and Play NE2000 compatible adapter with full-duplex and power down features. With the three level power down control features, the RTL8019AS is made to be an ideal choice of the network device for a GREEN PC system. The full-duplex function enables simultaneously transmission and reception on the twisted-pair link to a full-duplex Ethernet switching hub. This feature not only increases the channel bandwidth from 10 to 20 Mbps but also avoids the performance degrading problem due to the channel contention characteristics of the Ethernet CSMA/CD protocol. The Microsoft's Plug and Play function can relieve the users from pains of taking care the adapter's resource configurations such as IRQ, I/O, and memory address, etc. However, for special applications not to be used as a Plug and Play compatible device, the RTL8019AS also supports the jumper and proprietary jumperless options.

To offer a fully plug and play solution, the RTL8019AS provides the auto-detect capability between the integrated 10BaseT transceiver, BNC and AUI interface. Besides, the 10BaseT transceiver can automatically correct the polarity error on its receiving pair. Furthermore, 8 IRQ lines and 16 I/O base address options are provided for grand resource configuration flexibility.

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基于S3C44BOX与RTL8019AS的嵌入式以太网接口单元的设计

基于S3C44BOX与RTL8019AS的嵌入式以太网接口单元的设计

基于Ｓ3Ｃ44ＢＯＸ与ＲＴＬ8019ＡＳ的嵌入式以太网接口单元的设计[摘要]设计了基于S3C44B0X与RTL8019AS以太网接口单元的硬件电路,并给出了以太网接口驱动程序及数据传输的实现方法,实现了嵌入式以太网的数据传输。

该设计已经成功应用在远程监控系统中，系统性能稳定可靠。

[关键词]嵌入式以太网S3C44B0XRTL8019AS TCP/IP一、引言随着互联网的日益普及，信息共享程度的要求在不断提高，各种家电设备、仪器仪表以及工业生产中的数据采集与控制设备在逐步地走向网络化，以便利用庞大的网络资源，实现分布式远程监控、信息交换与共享[1]。

目前，大多数智能设备和仪表都是采用RS232/485通讯方式，不具备远程控制和数据传输能力，利用嵌入式系统与以太网连接实现远程控制系统是嵌入式系统发展的重要方向。

本文采用嵌入式微处理器S3C44B0X和以太网控制器芯片RTL8019AS实现了嵌入式系统与以太网的互联。

二、嵌入式以太网接口单元的设计（一）S3C44B0X芯片介绍S3C44B0微处理器是基于ARM7TDMI的RISC型CPU,是一款性价比较高的嵌入式32位处理器，最高工作频率为66MHz。

S3C44B0X通过在ARM7TDMI 内容基础上扩展一系列完整的通用外围器件,使系统费用降至最低，在嵌入式领域应用十分广泛。

（二）RTL8019AS芯片介绍[2]Realtek公司生产的RTL8019AS以太网控制器由于其优良的性能、低廉的价格,使其在市场上的10 Mb/s网卡中占有相当的比例，在嵌入式领域广泛应用。

RTL8019AS为ISA总线结构,支持全双工,收发可同时达到10Mb/s的速率；此外, RTL8019AS内部和外部还有一个DMA双通道总线接口。

RTL8019AS内部可分为远程DMA接口、本地DMA接口、MAC(介质访问子层)逻辑、数据编码解码逻辑和其它端口。

ISA总线接口即远程DMA接口是指主机对RTL8019AS进行控制和操作的总线，微处理器收发数据只需对远程DMA 操作。

89c51datasheet

89c51datasheet

SCON Address = 98H Reset Value = 0000 0000B Bit AddressableSM0/FE SM1SM2REN TB8RB8Tl RlBit:76543210(SMOD0 = 0/1)*Symbol FunctionFE Framing Error bit. This bit is set by the receiver when an invalid stop bit is detected. The FE bit is not cleared by valid frames but should be cleared by software. The SMOD0 bit must be set to enable access to the FE bit.SM0Serial Port Mode Bit 0, (SMOD0 must = 0 to access bit SM0)SM1Serial Port Mode Bit 1SM0SM1Mode Description Baud Rate**000shift register f OSC/120118-bit UART variable1029-bit UART f OSC/64 or f OSC/321139-bit UART variableSM2Enables the Automatic Address Recognition feature in Modes 2 or 3. If SM2 = 1 then Rl will not be set unless the received 9th data bit (RB8) is 1, indicating an address, and the received byte is a Given or Broadcast Address.In Mode 1, if SM2 = 1 then Rl will not be activated unless a valid stop bit was received, and the received byte is aGiven or Broadcast Address. In Mode 0, SM2 should be 0.REN Enables serial reception. Set by software to enable reception. Clear by software to disable reception.TB8The 9th data bit that will be transmitted in Modes 2 and 3. Set or clear by software as desired.RB8In modes 2 and 3, the 9th data bit that was received. In Mode 1, if SM2 = 0, RB8 is the stop bit that was received.In Mode 0, RB8 is not used.Tl Transmit interrupt flag. Set by hardware at the end of the 8th bit time in Mode 0, or at the beginning of the stop bit in the other modes, in any serial transmission. Must be cleared by software.Rl Receive interrupt flag. Set by hardware at the end of the 8th bit time in Mode 0, or halfway through the stop bit time in the other modes, in any serial reception (except see SM2). Must be cleared by software.NOTE:*SMOD0 is located at PCON6.**f OSC = oscillator frequency SU00043Figure 7. SCON: Serial Port Control RegisterPX0IP (0B8H)Priority Bit = 1 assigns higher priorityPriority Bit = 0 assigns lower priorityBIT SYMBOL FUNCTIONIP .7—Not implemented, reserved for future use.IP .6—Not implemented, reserved for future use.IP .5PT2Timer 2 interrupt priority bit.IP .4PS Serial Port interrupt priority bit.IP .3PT1Timer 1 interrupt priority bit.IP .2PX1External interrupt 1 priority bit.IP .1PT0Timer 0 interrupt priority bit.IP .0PX0External interrupt 0 priority bit.SU00572PT0PX1PT1PS PT2——01234567Figure 11. IP RegistersPX0HIPH (B7H)Priority Bit = 1 assigns higher priorityPriority Bit = 0 assigns lower priorityBIT SYMBOL FUNCTIONIPH.7—Not implemented, reserved for future use.IPH.6—Not implemented, reserved for future use.IPH.5PT2H Timer 2 interrupt priority bit high.IPH.4PSH Serial Port interrupt priority bit high.IPH.3PT1H Timer 1 interrupt priority bit high.IPH.2PX1H External interrupt 1 priority bit high.IPH.1PT0H Timer 0 interrupt priority bit high.IPH.0PX0H External interrupt 0 priority bit high.SU01058PT0H PX1H PT1H PSH PT2H ——01234567Figure 12. IPH RegistersPLCC44:plastic leaded chip carrier; 44 leads SOT187-2DIP40:plastic dual in-line package; 40 leads (600 mil)SOT129-1QFP44:plastic quad flat package; 44 leadsNOTESDefinitionsShort-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook.Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability.Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification.DisclaimersLife support — These products are not designed for use in life support appliances, devices or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.Right to make changes — Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified.Philips Semiconductors811 East Arques AvenueP.O. Box 3409Sunnyvale, California 94088–3409Telephone 800-234-7381© Copyright Philips Electronics North America Corporation 1999All rights reserved. Printed in U.S.A.Date of release: 10-99。

基于RTL8019AS单片机在以太网通信中的应用

基于RTL8019AS单片机在以太网通信中的应用

基于RTL8019AS单片机在以太网通信中的应用作者：汪文涛等来源：《科技视界》2014年第24期【摘要】近年来随着网络和嵌入式技术的不断发展，嵌入式和网络的结合已经成为最新的研究动态之一。

本文中选用嵌入式芯片C8051F020和以太网接口芯片RTL8019AS设计了一种通信接口模块，其中嵌入式芯片C8051F020中嵌入了人为处理后TCP/IP精简协议，与以太网接口芯片RTL8019AS协同工作，共同实现了以太网通信接口的功能。

实验表明，本方案具有结构简单、实现方便、实用价值高和成本低等特点。

【关键词】以太网；C8051F020；RTL8019AS；TCP/IP精简协议0 引言随着网络技术的迅速发展，网络用户呈指数增长，在使用计算机进行网络连互的同时，小至各类家电、仪器仪表设备大至工业生产过程中数据采集、控制设备都在逐步趋向网络化。

网络数据传输技术具有传输距离远、传输速率高、信息共享程度高等优点，因此对嵌入式设备增加网络功能有着深远的意义。

目前在工业控制领域底层的仪器仪表、各类传感器的参数等数据几乎都是通过现场总线的方式进行上传，但是现场总线的协议并不是统一的，故而在生产过程中带来极大的不便。

由于TCP/IP协议在行业内已有统一的标准，故而利用嵌入式芯片内嵌TCP/IP精简协议与以太网接口芯片RTL8019AS协同工作便能很好地解决这个问题。

这种方法的显著优点就是成本低、实现简单。

可以说通过以太网进行通信是工业控制领域一大趋势。

本文以远程数据传输和控制指令传输为应用背景，设计了一套基于嵌入式系统的以太网通信模块。

1 系统简介本系统采用的核心嵌入式控制芯片是C8051F020，该单片机使用美国Cygnal公司的CIP-51微控制器内核。

它采用PQFP-100的封装形式，内部集成了ADC、DAC、PCA、模拟比较器以及多种节电休眠和停机方式，工作频率高达25MHz。

以太网接口芯片是采用采用RealTek公司生产的RTL8019AS，它符合EthernetII与IEEE802.3标准；全双工，收发可同时进行，内置16KB的SRAM，用于收发缓冲，降低了对处理器的速度要求；支持8/16位的数据总线；采用了100脚PQFP封装。

R820T_datasheet

R820T_datasheet

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