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DP83959 PDF预览

DP83959

更新时间: 2024-02-05 20:49:32
品牌 Logo 应用领域
美国国家半导体 - NSC 控制器以太网
页数 文件大小 规格书
38页 284K
描述
8-Port Lite Ethernet Repeater Interface Controller

DP83959 技术参数

生命周期:Obsolete零件包装代码:QFP
包装说明:PLASTIC, QFP-160针数:160
Reach Compliance Code:unknown风险等级:5.84
Is Samacsys:N地址总线宽度:5
边界扫描:NO最大时钟频率:20 MHz
数据编码/解码方法:NRZ; BIPH-LEVEL(MANCHESTER)外部数据总线宽度:4
JESD-30 代码:S-PQFP-G160长度:28 mm
低功率模式:NO串行 I/O 数:9
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:3.7 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

DP83959 数据手册

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October 1997  
DP83959  
8-Port Lite Ethernet Repeater Interface Controller  
General Description  
Features  
The DP83959 8-Port Lite Ethernet Repeater Interface  
Controller (LERIC8) is a single chip solution for unman-  
aged 10BASE-T Ethernet repeater (hub) products. By inte-  
grating electronics needed to support eight 10BASE-T  
ports, a full level/drive compatible AUI port for a backbone  
connection, and an internal power on reset circuit, a  
LERIC8 based design requires only the addition of a few  
passive components: crystal, transformers, connectors  
and a power source.  
Fully IEEE 802.3 Ethernet Repeater compliant  
Eight IEEE 802.3 10BASE-T compliant ports with  
on-chip transmit filters  
One IEEE 802.3 compatible AUI port  
Direct drive status LED outputs  
Network traffic level monitor with direct drive LED  
outputs  
Automatic internal power-on reset function. External  
TTL compatible reset pin provided for device testing if  
required  
Inter-LERIC™ bus for cascading up to 3 devices on a  
single board  
Register/LED status interface compatible with  
DP83955/6 LERIC™ products  
Single 20 MHz crystal or external 20 MHz oscillator  
module operation  
Single 5V supply  
160 pin PQFP package  
The LERIC8 provides on-chip LED drivers that connect di-  
rectly to LEDs via series resistors. In addition to the Link  
OK, Port Partition, Global Activity and Global Collision LED  
outputs, the LERIC8 provides an on chip network traffic  
level monitor circuit with 8 LED outputs to drive a bargraph  
type display.  
The LERIC8 also provides an LED and Inter Repeater Bus  
interface that is compatible with the DP83955/6 LERIC™  
products.  
1.0 System Diagram  
Status LEDs (Optional)  
20MHz  
Inter Repeater Bus  
Oscillator  
Network Traffic Bargraph  
Alert (High Traffic or Long Partition)  
Per 10BASE-T Port Link & Partition  
(Optional)  
AUI Port Partition  
or Crystal  
Global Activity, Global Collision  
DP83959 LERIC8  
8-Port Lite Ethernet Repeater Interface Controller  
Transformer  
Transformer  
Transformer  
Transformer  
Transformer  
Transformer  
Transformer  
Transformer  
Transformer  
AUI  
Port  
10BASE-T  
Port 1  
10BASE-T  
Port 2  
10BASE-T  
Port 3  
10BASE-T  
Port 4  
10BASE-T  
Port 5  
10BASE-T  
Port 6  
10BASE-T  
Port 7  
10BASE-T  
Port 8  
TRI-STATE® is a registered trademark of National Semiconductor Corporation.  
LERICand Inter-LERICare trademarks of National Semiconductor Corporation.  
©1997 National Semiconductor Corporation  
www.national.com  

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