PI7C21P100
双端口PCI -X桥
超前信息
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
类型TRANSACTIONS.................................................................................................. 22
4.2
写事务....................................................................................................... 23
4.2.1
存储器写事务............................................... ..................................... 23
4.2.1.1
4.2.1.2
4.2.1.3
4.2.1.4
PCI - X到PCI -X ....................................................................................................................... 24
PCI TO PCI................................................................................................................................ 24
PCI TO PCI-X............................................................................................................................ 24
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
读事务......................................................................................................... 25
4.3.1
内存读取事务............................................... ....................................... 26
4.3.1.1
4.3.1.2
4.3.1.3
4.3.1.4
PCI - X到PCI -X ....................................................................................................................... 26
PCI TO PCI................................................................................................................................ 26
PCI TO PCI-X............................................................................................................................ 26
PCI - X到PCI............................................................................................................................ 27
4.3.2
4.3.3
4.3.4
4.3.5
I / O READ.............................................................................................................................. 27
配置读................................................ .................................................. 27
类型1配置读.............................................. ........................................... 27
类型0配置读.............................................. ........................................... 27
4.3.3.1
4.3.3.2
非预取和DWORD READS ............................................ ...................... 28
预取READS.................................................................................................... 28
PCI - X到PCI -X和PCI - X到PCI ..................................... ............................................... 28
PCI TO PCI................................................................................................................................ 28
PCI TO PCI-X............................................................................................................................ 29
4.3.5.1
4.3.5.2
4.3.5.3
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 PI7C21P100 ............................................. .......................................... 30
4.4.2
键入1以0型转换............................................ ......................................... 30
4.4.3
1型1型货运............................................ ........................................ 31
4.4.4
专用循环............................................................................................................... 32
5
事务排序........................................................................................................ 32
5.1
5.2
6
一般订购指南............................................... .................................... 33
订购RULES................................................................................................................. 33
CLOCKS............................................................................................................................................ 34
第77页5
2005年6月10日修订版1.06
QQ：2880707522 复制
