DP83848Q
目录
1.0概述......................................................................................................................... 1
2.0应用.................................................................................................................................... 1
3.0产品特点........................................................................................................................................ 1
4.0系统图.............................................................................................................................. 1
4.0框图................................................................................................................................ 2
6.0引脚布局...................................................................................................................................... 6
7.0引脚说明.............................................................................................................................. 7
7.1串行管理接口.............................................. .......................................... 7
7.2 MAC数据接口........................................................................................................... 7
7.3时钟接口................................................................................................................ 8
7.4 LED接口..................................................................................................................... 9
7.5 RESET ................................................................................................................................... 9
7.6 STRAP选项.................................................................................................................. 10
7.7为10 Mb / s和100 MB / s的PMD接口...................................... .......................................... 11
7.8特殊关系...................................................................................................... 11
7.9电源引脚.......................................................................................................... 11
7.10封装引脚分配.............................................. ............................................... 12
8.0配置................................................................................................................................ 13
8.1自动协商............................................................................................................ 13
8.1.1自动协商引脚控制.......................................... ................................................ 13
8.1.2自动协商寄存器控制.......................................... ......................................... 13
8.1.3自动协商并行检测.......................................... ....................................... 13
8.1.4自动协商重启........................................... .................................................. .. 14
通过软件8.1.5使能自协商......................................... .................................. 14
8.1.6自动协商完成时间.......................................... .......................................... 14
8.2 AUTO- MDIX .......................................................................................................................... 14
8.3 PHY地址..................................................................................................................... 14
8.3.1 MII隔离模式........................................................................................................... 14
8.4 LED接口................................................................................................................... 15
8.4.1 LED灯.......................................................................................................................... 15
8.4.2 LED直接控制........................................................................................................ 16
8.5半双工与全双工........................................... ................................................ 16
8.6内部环回.......................................................................................................... 16
8.7 BIST ..................................................................................................................................... 16
9.0功能描述.................................................................................................................... 17
9.1 MII接口..................................................................................................................... 17
9.1.1半字节宽的MII数据接口......................................... .............................................. 17
9.1.2冲突检测............................................................................................................ 17
9.1.3载波侦听.............................................................................................................. 17
9.2简化的MII接口.............................................. .................................................. .... 17
9.3 802.3u标准的MII串行管理接口........................................... ........................... 18
9.3.1串行管理寄存器访问........................................... .................................... 18
9.3.2串行管理访问协议........................................... .................................... 18
9.3.3串行管理序言抑制........................................... ........................... 19
10.0体系结构................................................................................................................................ 20
10.1 100BASE -TX发射器............................................. .................................................. 20
10.1.1码组编码和注射......................................... ...................................... 21
10.1.2加扰.................................................................................................................. 21
10.1.3 NRZ到NRZI编码器........................................... .................................................. .... 22
10.1.4二进制到MLT -3的转换器......................................... .................................................. 22
10.2 100BASE -TX接收器...................................................................................................... 22
10.2.1模拟前端........................................................................................................ 22
10.2.2数字信号处理器............................................ .................................................. 22
10.2.2.1数字自适应均衡和增益控制......................................... ............ 23
10.2.2.2基线漂移补偿........................................... ............................ 24
10.2.3信号检测............................................................................................................. 25
10.2.4 MLT- 3到NRZI解码......................................... .................................................. ... 25
10.2.5 NRZI到NRZ .............................................................................................................. 25
10.2.6串行到并行......................................................................................................... 25
10.2.7解扰器.............................................................................................................. 25
10.2.8代码组对齐........................................... .................................................. ... 25
10.2.9 4B / 5B解码器........................................................................................................... 25
10.2.10 100BASE -TX链路完整性监控......................................... .................................... 25
10.2.11坏SSD检测............................................ .................................................. ..... 25
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