21150 参数 Datasheet PDF下载

21150

目录

1.0

Introduction......................................................................................................................... 1

1.1

1.2

1.3

1.4

1.5

2.0

架构........................................................................................................... 3

数据路径..............................................................................................................五

发布时间写队列............................................... ............................................... 6

延迟事务队列............................................... ................................... 6

读取数据队列............................................... .................................................. 6

信号引脚......................................................................................................................... 7

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

主PCI总线接口信号............................................. ........................... 8

二级PCI总线接口信号............................................. .................... 11

二级总线仲裁信号.............................................. ........................ 13

通用I / O接口信号.......................................... ..................... 14

时钟Signals.......................................................................................................14

复位信号......................................................................................................15

其他信号................................................ ......................................... 16

JTAG信号......................................................................................................17

3.0

针Assignments...............................................................................................................19

3.1

3.2

数字引脚分配............................................... ...................................... 20

字母引脚分配............................................... ................................... 24

4.0

PCI总线操作...........................................................................................................27

4.1

4.2

交易类型............................................... .......................................... 27

地址相....................................................................................................28

4.2.1单地址相............................................ ................................ 28

4.2.2双地址相............................................ ................................... 28

设备选择（ DEVSEL ＃ ）生成........................................... ..................... 29

数据Phase..........................................................................................................29

写事务................................................ .............................................. 29

4.5.1发布写事务............................................ ......................... 30

4.5.2存储器写和禁止交易.......................................... ..32

4.5.3延迟写入交易​​............................................ ....................... 32

4.5.4写入事务地址边界........................................... ....... 34

4.5.5缓冲多写事务........................................... .......... 35

4.5.6快速返回到回写事务....................................... ............ 35

读事务................................................ .............................................. 36

4.6.1预取读取交易............................................ ................ 37

4.6.2 Nonprefetchable阅读交易............................................ .......... 37

4.6.3预读取地址边界........................................... ............ 38

4.6.4延迟的读请求............................................ ............................ 38

4.6.5延迟读取完成与目标.......................................... ......... 39

4.6.6延迟读取完成上发起总线......................................... ... 39

配置交易................................................ ................................. 42

4.7.1类型0访问21150 ......................................... .......................... 43

4.7.2类型1到类型0翻译......................................... ......................... 44

4.7.3类型1至类型1转发......................................... ........................ 45

4.7.4特殊循环............................................. ........................................... 46

4.3

4.4

4.5

4.6

4.7

初步

数据表

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