KS8997/KSZ8997

8端口10/100交换机集成

与PHY和帧缓冲

版本1.1

概述

该KS8997包含八个10/100物理层

收发器， 8的MAC （介质访问控制）单元

具有集成2层交换机。该设备运行的

一个8端口集成开关。

该KS8997的目的是居住在非托管

设计无需处理器干预。这是

通过I / O捆扎或EEPROM来实现

在系统编程复位时间。

在媒体方面， KS8997支持的10BaseT

和100BaseTX通过自动协商规定

由IEEE 802.3委员会。

物理信号的发送和接收都

通过使用模拟电路，使增强

设计更有效和允许更低的功率

消费和更小的芯片裸片尺寸。

数据手册和支持文档，可以发现

麦瑞半导体网站： www.micrel.com 。

工作原理图

麦克雷尔公司 2180财富驱动圣何塞，加利福尼亚95131 USA 电话： +1 （ 408 ） 944-0800 传真：+ 1 （ 408 ） 474-1000 http://www.micrel.com

2007年2月

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麦克雷尔INC 。

KS8997/KSZ8997

特点

8端口10/100集成交换机具有8个物理

层收发器

的SRAM芯片为帧缓冲32Kx32

为2.0Gbps高性能内存带宽

操作的10BaseT和100BaseTX模式

高级模拟技术，降低功耗和

模具尺寸

与2.5V选项单2.0V电源

3.3V的I / O

900毫安（ 1.80 W）包括物理传输驱动程序

支持基于端口的VLAN

支持区分服务的优先级，基于802.1p优先级或

基于端口的优先级

指标环节，活动，全/半双工和

速度

通过捆扎或EEPROM在非托管经营

系统复位时间

基于硬件的10/100 ，全双工/半双工，流量控制和

自动协商

线速接收和发送

集成地址查找引擎，支持1K

绝对的MAC地址

自动地址学习，地址老化，

地址迁移

广播风暴保护

全双工IEEE 802.3x流量控制

半双工背压流控

全面的LED支架

支持MDI / MDI - X自动交叉

商业级温度范围： 0 ° C至+ 70°C

支持无铅产品（ KSZ8997 ）的

商业级温度范围： 0 ° C至+ 70°C

可提供128引脚PQFP封装

应用

小型工作组交换机

VoIP基础设施交换机

订购信息

产品型号

KS8997

KSZ8997

TEMP 。 RANGE

0 ° C至+ 70°C

0 ° C至+ 70°C

包

128引脚PQFP

128引脚PQFP

2007年2月

2

M9999-022807-1.1

麦克雷尔INC 。

KS8997/KSZ8997

修订历史

调整

1.00

1.01

日期

11/27/00

04/02/01

更改摘要

文档起源。

更新最大帧尺寸。

更新EEPROM重点描述。

更新I / O描述。

更新的电特性。

添加MDI / MDI_X描述/

改变电气要求。

正确的I / O描述。

更新PLL时钟信息。

纠正了LED [1： 8 ] [3]模式2的描述。

转换为新的格式。

添加无铅商业温包。

1.02

1.03

1.04

1.05

1.06

1.07

1.1

05/11/01

06/22/01

06/25/01

07/25/01

05/29/02

08/29/03

02/27/07

2007年2月

3

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麦克雷尔INC 。

KS8997/KSZ8997

目录

系统级应用................................................................................................................................................6

引脚说明..................................................................................................................................................................7

I / O Grouping....................................................................................................................................................................11

I / O Descriptions...............................................................................................................................................................11

针Configuration.............................................................................................................................................................14

功能概述：物理层收发器..........................................................................................................15

100BaseTX的Transmit...................................................................................................................................................15

100BaseTX的Receive....................................................................................................................................................15

PLL时钟合成器................................................................................................................................................15

加扰/解扰器（ 100BaseTX的only)...............................................................................................................15

的10BaseT发送.......................................................................................................................................................15

的10BaseT接收........................................................................................................................................................15

电源管理....................................................................................................................................................15

省电模式

..............................................................................................................................................15

MDI / MDI -X自动Crossover.........................................................................................................................................16

Auto-Negotiation..........................................................................................................................................................16

功能概述：核心交换机..................................................................................................................................17

地址Look-Up.........................................................................................................................................................17

Learning.......................................................................................................................................................................17

Migration......................................................................................................................................................................17

老化...........................................................................................................................................................................17

Forwarding...................................................................................................................................................................17

开关Engine.........................................................................................................................................................17

MAC（媒体访问控制器）的操作.................................................................................................................18

包间间隔（ IPG ）

......................................................................................................................................18

退避算法

...............................................................................................................................................18

晚Collision......................................................................................................................................................18

违法Frames.....................................................................................................................................................18

流量控制

.......................................................................................................................................................18

半双工背压

................................................................................................................................18

广播风暴保护

...............................................................................................................................18

可编程特性.................................................................................................................................................19

优先配屋计划.........................................................................................................................................................19

每端口的方法..........................................................................................................................................................19

802.1p优先级的方法............................................................................................................................................................19

IPv4的DSCP方法.....................................................................................................................................................19

其他优先事项......................................................................................................................................19

VLAN操作..............................................................................................................................................................20

站的MAC地址（控制帧只） ....................................................................................................................21

EEPROM的操作........................................................................................................................................................21

EEPROM存储器Map...............................................................................................................................................21

通用控制Register.............................................................................................................................................21

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KS8997/KSZ8997

优先级分类管理 - 802.1p标记field..........................................................................................................21

端口1控制Register................................................................................................................................................22

端口2控制Register................................................................................................................................................22

端口3控制Register................................................................................................................................................22

端口4控制Register................................................................................................................................................23

港口5控制Register................................................................................................................................................23

端口6控制Register................................................................................................................................................23

港口7控制Register................................................................................................................................................24

8端口控制Register................................................................................................................................................24

保留的Register.......................................................................................................................................................25

端口1 VLAN屏蔽寄存器........................................................................................................................................25

端口2的VLAN屏蔽寄存器........................................................................................................................................25

端口3 VLAN屏蔽寄存器........................................................................................................................................26

4端口的VLAN屏蔽寄存器........................................................................................................................................26

港口5 VLAN屏蔽寄存器........................................................................................................................................26

港口6 VLAN屏蔽寄存器........................................................................................................................................27

端口VLAN 7屏蔽寄存器........................................................................................................................................27

端口& VLAN屏蔽寄存器........................................................................................................................................28

保留的Register.......................................................................................................................................................28

端口1 VLAN标记插入值Registers................................................................................................................28

端口2的VLAN标记插入值Registers................................................................................................................28

端口3 VLAN标记插入值Registers................................................................................................................28

4端口VLAN标记插入值Registers................................................................................................................29

港口5 VLAN标记插入值Registers................................................................................................................29

港口6 VLAN标记插入值Registers................................................................................................................29

端口7 VLAN标记插入值Registers................................................................................................................29

8端口的VLAN标记插入值Registers................................................................................................................29

保留的Register.......................................................................................................................................................29

差分服务代码点Registers....................................................................................................................................29

站的MAC地址寄存器（所有端口 - MAC控制帧只） ..................................... ................................. 30

绝对最大额定值............................................................................................................................................31

工作额定值...........................................................................................................................................................31

电气特性.................................................................................................................................................31

时序图.............................................................................................................................................................33

参考Circuit.............................................................................................................................................................34

4B / 5B编码。 ..................................................................................................................................................................35

MLT3 Coding...................................................................................................................................................................36

对于MAC帧802.3......................................................................................................................................................36

选择隔离变压器..................................................................................................................................37

选型参考Oscillator/Crystal........................................................................................................................37

包装信息.......................................................................................................................................................38

2007年2月

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