超前信息

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765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321

765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321

PI7C7100

3端口PCI桥

目录

1.

2.

3.

3.1

3.2

3.2.1

3.2.2

3.2.3

3.2.4

3.2.5

3.2.6

3.3

4.

4.1

4.2

4.3

4.4

4.5

4.5.1

4.5.2

4.5.3

4.5.4

4.5.5

4.5.6

4.6

4.6.1

4.6.2

4.6.3

4.6.4

4.6.5

4.6.6

4.7

4.7.1

4.7.2

4.7.3

4.7.4

4.8

4.8.1

4.8.2

4.8.3

4.8.3.1

4.8.3.2

4.8.3.3

4.8.4

4.8.4.1

4.8.4.2

简介/产品特点

............................................................................................................................... 1

PI7C7100框图

...................................................................................................................................... 3

信号定义

................................................................................................................................................... 4

信号类型............................................................................................................................................................ 4

信号...................................................................................................................................................................... 4

主总线接口信号.................................................................................................................................. 4

二级总线接口信号............................................................................................................................. 6

时钟信号............................................................................................................................................................ 8

其他信号............................................................................................................................................. 8

JTAG边界扫描信号.................................................................................................................................. 9

电源和接地.................................................................................................................................................... 9

PI7C7100引脚PBGA上市..................................................................................................................................... 9

PCI总线操作

................................................................................................................................................ 13

交易类型........................................................................................................................................... 13

单地址相............................................................................................................................................ 14

设备选择（ DEVSEL ＃ ）生成.................................................................................................................... 14

数据阶段............................................................................................................................................................. 14

写事务................................................................................................................................................ 14

发表于写事务.................................................................................................................................... 14

存储器写和禁止交易.......................................................................................................... 15

延迟写入交易.................................................................................................................................. 15

写事务地址边界................................................................................................................ 16

多重缓冲写入事务.................................................................................................................. 16

快速回至回写事务.................................................................................................................. 16

阅读交易................................................................................................................................................. 17

预取读取事务............................................................................................................................ 17

非预取读取事务.................................................................................................................... 17

读预取地址边界...................................................................................................................... 17

延迟的读请求......................................................................................................................................... 18

延迟读取完成与目标.................................................................................................................. 18

在发起总线延迟读取完成........................................................................................................... 18

配置交易................................................................................................................................... 19

键入0访问PI7C7100 ................................................................................................................................... 19

类型1到类型0转换................................................................................................................................ 20

类型1至类型1转发................................................................................................................................ 21

特殊循环........................................................................................................................................................ 22

交易终止........................................................................................................................................ 22

主终端所PI7C7100启动............................................................................................................ 23

硕士中止接收由PI7C7100 ..................................................................................................................... 23

目标终止接收由PI7C7100 ............................................................................................................ 24

延迟写入目标终止响应....................................................................................................... 24

发布时间写目标终止响应......................................................................................................... 24

延迟读目标终止响应........................................................................................................ 25

目标终止了PI7C7100启动............................................................................................................. 26

目标重试........................................................................................................................................................... 26

目标断开.................................................................................................................................................. 27

iii

09/18/00

版本1.1