KSZ8721BL 参数 Datasheet PDF下载

麦克雷尔INC 。

KS8721BL/SL

目录

引脚配置.............................................................................................................................................................. 6

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

捆包选项

(1)

........................................................................................................................................................ 10

功能描述................................................................................................................................................... 11

100BASE-TX Transmit.................................................................................................................................................. 11

100BASE-TX Receive................................................................................................................................................... 11

PLL时钟Synthesizer.................................................................................................................................................. 11

加扰/解扰器（ 100BASE -TX专用） .............................................................................................................. 11

10Base-T传输...................................................................................................................................................... 11

10BASE -T接收....................................................................................................................................................... 11

SQE和Jabber功能（仅适用于10BASE -T ） ................................................................................................................ 12

自动协商........................................................................................................................................................... 12

MII管理接口............................................................................................................................................ 12

MII数据接口......................................................................................................................................................... 12

传输时钟(TXC)........................................................................................................................................... 12

接收时钟（ RXC ） ........................................................................................................................................... 12

发送使能................................................................................................................................................... 13

接收数据Valid............................................................................................................................................... 13

错误Signals......................................................................................................................................................... 13

载波侦听（ CRS ） ............................................................................................................................................ 13

Collision................................................................................................................................................................ 13

RMII （精简MII ）数据Interface............................................................................................................................... 13

RMII信号降噪音响nition ................................................................................................................................................... 13

参考时钟(REF_CLK)........................................................................................................................................ 14

载波侦听/接收数据有效（ CRS_DV ） .............................................................................................................. 14

接收数据[ 1：0] （RXD [1： 0]）的...................................................................................................................................... 14

发送使能(TX_EN)............................................................................................................................................. 14

传输数据[ 1 ： 0 ] (TXD[1:0])...................................................................................................................................... 14

碰撞检测........................................................................................................................................................ 14

RX_ER .......................................................................................................................................................................... 14

RMII交流Characteristics................................................................................................................................................ 15

未使用RMII的引脚......................................................................................................................................................... 15

自动交叉（Auto - MDI / MDI -X ） ............................................................................................................................... 15

动力Management...................................................................................................................................................... 16

100BT FX Mode............................................................................................................................................................ 16

媒体转换器Operation........................................................................................................................................... 17

电路设计参考电源................................................................................................................. 18

注册Map.................................................................................................................................................................... 19

注册0H - 基本控制........................................................................................................................................... 19

注册1H - 基本情况............................................................................................................................................ 19

注册2H - PHY Identi连接器1 ....................................................................................................................................... 20

注册3H - PHY Identi连接器2 ....................................................................................................................................... 20

注册4H - 自动协商广告............................................................................................................. 20

注册5H - 自动协商链路伙伴能力...................................................................................................... 21

注册6H - 自动协商Expansion.................................................................................................................... 21

注册7H - 自动协商下一页Page.................................................................................................................... 21

注册8H - 链接合作伙伴下一页能力................................................................................................................ 22

注册15小时 - RXER Counter....................................................................................................................................... 22

1BH注册 - 中断控制/状态寄存器.......................................................................................................... 22

注册1FH - 100BASE- TX PHY Controller................................................................................................................. 23

绝对最大额定值

(1)

........................................................................................................................................ 24

工作额定值

(2)

........................................................................................................................................................ 24

电气特性

(4)

............................................................................................................................................ 24

2009年6月

4

M9999-062509-1.3