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DP83953

更新时间： 2024-01-15 14:50:28
品牌 Logo 应用领域
美国国家半导体 - NSC 驱动器控制器
页数 文件大小 规格书
90页 936K
描述
Repeater Interface Controller with Security Features, Internal Drivers and Integrated Filters

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DP83953 技术参数

生命周期：Obsolete零件包装代码：QFP
包装说明：QFP,针数：160
Reach Compliance Code：unknownHTS代码：8542.31.00.01
风险等级：5.81地址总线宽度：5
边界扫描：NO最大时钟频率：40 MHz
数据编码/解码方法：NRZ; BIPH-LEVEL(MANCHESTER)外部数据总线宽度：8
JESD-30 代码：S-PQFP-G160长度：28 mm
低功率模式：NO串行 I/O 数：13
端子数量：160最高工作温度：70 °C
最低工作温度：封装主体材料：PLASTIC/EPOXY
封装代码：QFP封装形状：SQUARE
封装形式：FLATPACK座面最大高度：4.1 mm
最大供电电压：5.25 V最小供电电压：4.75 V
标称供电电压：5 V表面贴装：YES
技术：CMOS温度等级：COMMERCIAL
端子形式：GULL WING端子节距：0.65 mm
端子位置：QUAD宽度：28 mm
uPs/uCs/外围集成电路类型：SERIAL IO/COMMUNICATION CONTROLLER, LANBase Number Matches：1

DP83953 数据手册

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PRELIMINARY  
March 1998  
DP83953 (RIC2A)  
Repeater Interface Controller with Security Features,  
Internal Drivers and Integrated Filters  
General Description  
1 IEEE 802.3 compatible AUI port  
Cascadable for larger hub applications  
The DP83953 Repeater Interface Controller with Security  
Features and Integrated Transmit Filters (RIC2A) is an en-  
hanced version of the DP83952 Repeater Interface Control-  
ler with Security Features (RIC II). The RIC2A integrates  
driver and filter circuitry into the RIC II design.  
On chip Elasticity Buffer, Manchester encoder and de-  
coder  
Separate Partition state machines for each port  
Compatible with 802.3k Hub Management require-  
ments  
The functionality of the RIC2A is essentially similar to the  
RIC II, but the pin definitions have been modified to reflect  
the added integrated drivers and filters. Additionally, the  
power and ground pin locations have been rearranged.  
Therefore, the RIC2A is not a drop in replacement for the  
RIC ll.  
LED displays to provide port status information, includ-  
ing receive, collision, partition, jabber and link status,  
Power-up configuration options  
Repeater and Partition Specifications, Status Display,  
Processor Operations  
Simple processor interface for repeater management  
and port disable.  
The RIC2A is National Semiconductor’s managed repeater  
solution designed to comply with IEEE 802.3 Repeater  
Specifications. Segment partition and jabber lockup protec-  
tion state machines are implemented in accordance with  
this standard. The RIC2A has thirteen network interface  
ports available, including an AUI compatible port. The AUI  
port incorporates drivers to connect an external MAU using  
maximum length cable. Similarly, the other twelve interface  
On-chip Event Counters and Event Flag Arrays  
Serial Management Bus Interface to combine packet  
and repeater status information  
Single 5V supply  
ports integrate 10BASE-T transceivers with supporting driv- The Security Features  
er and transmit filter circuitry. (continued)  
Prevents unauthorized eavesdropping and/or intrusion  
on a per port basis  
Features  
58 On Chip CAMs (Content Addressable Memory) al-  
low storage of acceptable addresses  
Fully compliant with the IEEE 802.3 Repeater Specifica-  
tion  
Learn mode automatically records addresses of at-  
tached node  
12 IEEE 802.3 10BASE-T compatible ports with built-in  
drivers and analog transmit filters; additional external  
isolation transformers are required to implement hubs  
System Diagram  
FAST® and TRI-STATE® are registered trademarks of National Semiconductor Corporation.  
100RIC™ is a trademark of National Semiconductor Corporation  
SONIC™ is a trademark of National Semiconductor Corporation  
Ethernet is a trademark of Xerox Corporation  
GAL® is a registered trademark of Lattice Semiconductor  
PA L® is a registered trademark of and license from Advanced Micro Devices, Inc.  
© 1998 National Semiconductor Corporation  
www.national.com  
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