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KSZ8842-PMQL-TR PDF预览

KSZ8842-PMQL-TR

更新时间： 2024-01-05 17:31:53
品牌 Logo 应用领域
美国微芯 - MICROCHIP 局域网电信开关电信集成电路
页数 文件大小 规格书
2页 169K
描述
DATACOM, LAN SWITCHING CIRCUIT

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中文翻译

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KSZ8842-PMQL-TR 技术参数

生命周期：Active包装说明：QFP,
Reach Compliance Code：compliantHTS代码：8542.39.00.01
风险等级：5.33JESD-30 代码：S-PQFP-G128
功能数量：1端子数量：128
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
标称供电电压：3.3 V表面贴装：YES
电信集成电路类型：LAN SWITCHING CIRCUIT温度等级：COMMERCIAL
端子形式：GULL WING端子位置：QUAD
Base Number Matches：1

KSZ8842-PMQL-TR 数据手册

 浏览型号KSZ8842-PMQL-TR的Datasheet PDF文件第2页 
KSZ8842  
PMQL/PMQLI  
www.micrel.com  
Product Brief  
2-Port Ethernet Switch with  
PCI Interface  
Description  
Benefits  
The KSZ8842-PMQL is the industry’s first 2-port switch  
with a PCI CPU interface. An Industrial Temperature  
grade part, the KSZ8842-PMQLI will also available from  
Q1, 2006. The KSZ8842P is a proven, 4th generation,  
integrated, fully managed Layer 2 switch that is entirely  
compliant to IEEE802.3u standards.  
In addition to offering all of the features of an integrat-  
ed Layer 2 managed switch:  
• 2-port switch with 32 bit/33MHz PCI bus for differ-  
ent host processor interfaces  
• Fully compliant to the IEEE802.3u standard  
• Repeater mode capabilities to allow for ‘cut-thru’  
in latency critical Industrial Ethernet or Embedded  
Ethernet applications  
The KSZ8842P can be configured as a low-latency re-  
peatertoallowfor‘cutthru’inlatencycriticalEmbeddedor  
IndustrialEthernetapplications. Forindustrialautomation  
applications, it runs in half-duplex mode.  
• Dynamic buffer memory scheme  
– Essential for applications such as Video over IP  
where image jitter is unacceptable  
• Micrel LinkMDTM cable diagnostic capabilities to  
determine cable length, determine distance to fault,  
and to diagnose faulty cables  
TheKSZ8842Poffersanextensivefeaturesetthatincludes  
tag/port-based VLAN, QoS priority management, MAC  
filtering function, MIB counters, and CPU control/data  
interfaces to effectively address both current and emerg-  
ing Fast Ethernet applications.  
• HP Auto MDIX crossover with disable and enable  
option  
• Industrial temperature support: –40oC to +85oC  
• Four priority queues to handle voice, video, data,  
and control packets  
The KSZ8842P contains two 10/100 transceivers with  
patented mixed-signal low-power technology, two 1K  
entry media access control (MAC) units, a separate  
DMA channel, a high-speed non-blocking switch fabric,  
a dedicated 1K entry forwarding table, and an on-chip  
frame buffer memory.  
Block Diagram  
1K Look-up  
Engine  
HP Auto  
MDI/MDI-X  
10/100  
T/TX  
PHY 1  
10/100  
MAC 1  
Queue  
Management  
HP Auto  
MDI/MDI-X  
10/100  
T/TX  
PHY 2  
10/100  
MAC 2  
Buffer  
Management  
DMA  
Channel  
32 Bit/33MHz  
PCI  
Interface Unit  
PCI Bus  
Interface  
Frame  
Buffers  
MIB  
Counters  
Control  
Registers  
EEPROM  
Interface  
EEPROM I/F  
P1 LED[3:0]  
P2 LED[3:0]  
LED  
Drivers  
Note: For an MII/RMII, I2C or SPI interface, use the KSZ8893ML.  
LinkMD is a trademark of Micrel, Inc.  
Micrel Semiconductor TEL: 1.408.944.0800 FAX: 1.408.474.1000 HTTP:// www.micrel.com  
12

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