麦克雷尔公司机密
KSZ8842-16 / 32 MQL / MVL
总线接口单元(BIU).........................................................................................................三十
异步接口....................................................................................................................................................32
同步接口......................................................................................................................................................33
摘要..........................................................................................................................................................................33
BIU实施原则..........................................................................................................................................34
队列管理单元（ QMU ） ............................................ ............................................... 35
传输队列（ TXQ ）框架Format..............................................................................................................................35
接收队列（ RXQ ）帧格式..............................................................................................................................36
先进的开关功能............................................... .................................................. 38
生成树Support.....................................................................................................................................................38
支持IGMP ...................................................................................................................................................................39
“ IGMP ” Snooping............................................................................................................................................................39
在静态MAC “多播地址插入” Table....................................................................................................39
IPv6的MLD Snooping功能..........................................................................................................................................................39
端口镜像Support.......................................................................................................................................................39
IEEE 802.1Q VLAN支持.............................................................................................................................................40
QoS优先级支持.........................................................................................................................................................40
基于端口的Priority............................................................................................................................................................40
基于802.1p的优先级.......................................................................................................................................................40
基于DiffServ的优先级......................................................................................................................................................41
速率限制支持.......................................................................................................................................................41
MAC地址过滤功能.....................................................................................................................................................42
组态Interface......................................................................................................................................................42
EEPROM接口...........................................................................................................................................................42
环回Support.............................................................................................................................................................43
远端环回..........................................................................................................................................................43
近端（远程）环回........................................................................................................................................43
CPU接口I / O寄存器............................................ .................................................. .... 45
I / O寄存器.....................................................................................................................................................................45
内部I / O空间的映射..............................................................................................................................................46
注册地图：开关& MAC / PHY .......................................... .............................................. 54
BIT类型Definition.............................................................................................................................................................54
银行0-63 Bank选择寄存器（ 0x0E的） ： BSR （在所有银行同一位置） ............................... ....................................... 54
银行0基地址寄存器（ 0×00 ） ： BAR.....................................................................................................................54
银行0总线错误状态寄存器（ 0×06 ） ： BESR ..............................................................................................................55
银行0总线突发长度寄存器（ 0×08 ） ： BBLR .............................................................................................................55
银行1 ：保留.............................................................................................................................................................55
银行2主机的MAC地址寄存器低（ 0×00 ） ： MARL ...................................... .................................................. .......... 55
银行2主机的MAC地址寄存器中（ 0X02 ） ： MARM ...................................... .................................................. ..... 56
银行2主机的MAC地址寄存器高（ 0×04 ） ： MARH ...................................... .................................................. ......... 56
银行3片上总线控制寄存器（ 0×00 ） ： OBCR .......................................................................................................56
银行3 EEPROM控制寄存器（ 0X02 ） ： EEPCR ..........................................................................................................57
央行3内存BIST信息寄存器（ 0×04 ） ： MBIR ..........................................................................................................57
银行3全局复位寄存器（ 0×06 ） ： GRR......................................................................................................................57
银行3总线配置寄存器（ 0x08的） ：执行bcfg ............................................................................................................58
银行4-15 ：保留....................................................................................................................................................58
央行16发送控制寄存器（ 0×00 ） ： TXCR ............................................................................................................58
央行16发送状态寄存器（ 0X02 ） ： TXSR..............................................................................................................58
银行16接收控制寄存器（ 0×04 ） ： RXCR.............................................................................................................59
央行16 TXQ内存信息寄存器（ 0×08 ） ： TXMIR ....................................... .................................................. .... 59
央行16 RXQ内存信息注册字符（0x0A ） ： RXMIR ....................................... .................................................. ... 60
央行17 TXQ命令寄存器（ 0×00 ） ： TXQCR ...........................................................................................................60
央行17 RXQ命令寄存器（ 0X02 ） ： RXQCR ..........................................................................................................60
央行17发送帧数据指针寄存器（ 0×04 ） ： TXFDPR ...................................... .................................................. ..... 60
央行17 RX帧数据指针寄存器（ 0×06 ） ： RXFDPR ...................................... .................................................. .... 61
央行17 QMU数据寄存器低（ 0×08 ） ： QDRL ..............................................................................................................61
央行17 QMU数据寄存器高字符（0x0A ） ： QDRH ............................................................................................................61
央行18中断使能寄存器（ 0×00 ） ： IER.................................................................................................................62
央行18中断状态寄存器（ 0X02 ） ： ISR..................................................................................................................63
银行18接收状态寄存器（ 0×04 ） ： RXSR ..............................................................................................................64
2005年11月
5
修订版1.4
QQ：2880707522 复制
