PI7C21P100B
双端口PCI - X到PCI - X桥接
目录
1
2
3
DESCRIPTION................................................................................................................................... 9
特点......................................................................................................................................... 9
信号DEFINITIONS.................................................................................................................. 10
3.1
信号类型....................................................................................................................... 10
3.2
信号的.................................................................................................................................. 10
3.2.1
主总线接口信号.............................................. ................................. 10
3.2.2
主总线接口信号 - 64位扩展......................................... 12
3.2.3
辅助总线接口信号.............................................. ........................... 13
3.2.4
辅助总线接口信号 - 64位扩展.................................... 14
3.2.5
时钟SIGNALS................................................................................................................. 15
3.2.6
捆扎引脚和信号的杂项............................................. ......... 16
3.2.7
JTAG边界扫描和测试信号............................................ ..................... 17
3.2.8
TEST SIGNALS..................................................................................................................... 18
3.2.9
电源和地信号.............................................. ........................................ 18
3.3
引脚列表................................................................................................................................... 19
4
PCI总线OPERATION.................................................................................................................... 22
4.1
交易类型............................................... .................................................. 22
4.2
写事务....................................................................................................... 23
4.2.1
存储器写事务............................................... ..................................... 23
4.2.1.1
PCI - X到PCI -X
.................................................................................................................... 24
4.2.1.2
PCI到PCI
.............................................................................................................................. 24
4.2.1.3
PCI至PCI -X
......................................................................................................................... 24
4.2.1.4
PCI - X到PCI
......................................................................................................................... 25
4.2.2
延迟/ SPLIT写事务............................................. ........................... 25
4.2.3
立即写入交易............................................... ................................ 25
4.3
读TRANSACTIONS......................................................................................................... 25
4.3.1
内存读取事务............................................... ....................................... 26
4.3.1.1
PCI - X到PCI -X
.................................................................................................................... 26
4.3.1.2
PCI到PCI
.............................................................................................................................. 26
4.3.1.3
PCI至PCI -X
......................................................................................................................... 26
4.3.1.4
PCI - X到PCI
......................................................................................................................... 27
4.3.2
I / O READ.............................................................................................................................. 27
4.3.3
配置读................................................ .................................................. 27
4.3.3.1
1型配置读
................................................................................... 27
4.3.3.2
类型0配置读
................................................................................... 28
4.3.4
非预取和DWORD READS ............................................ ...................... 28
4.3.5
预取READS.................................................................................................... 28
4.3.5.1
PCI - X到PCI -X和PCI - X到PCI
............................................................................. 28
4.3.5.2
PCI到PCI
.............................................................................................................................. 29
4.3.5.3
PCI至PCI -X
......................................................................................................................... 29
4.3.6
动态预取（传统的PCI模式） ........................................ 29
4.4
配置交易................................................ ................................... 29
4.4.1
类型0 ACCESS TO PI7C21P100B ............................................. ....................................... 30
4.4.2
键入1以0型转换............................................ ......................................... 30
4.4.3
1型1型货运............................................ ........................................ 32
4.4.4
专用循环............................................................................................................... 32
5
事务排序........................................................................................................ 33
5.1
一般订购指南............................................... ................................... 33
第79 5
2005年11月 - 修订版1.02
QQ：2881677436 复制
