PI7C8140A
双端口PCI至PCI桥接器
目录
1
信号DEFINITIONS.............................................................................................................................11
1.1
信号TYPES....................................................................................................................................11
1.2
信号的..............................................................................................................................................11
1.2.1
主总线接口信号
...................................................................................11
1.2.2
辅助总线接口信号
.............................................................................12
1.2.3
时钟信号
........................................................................................................................14
1.2.4
其他信号
....................................................................................................14
1.2.5
电源和GROUND..............................................................................................................14
1.3
引脚列表 - 128 -PIN QFP......................................................................................................................15
2
PCI总线OPERATION...............................................................................................................................16
2.1
类型TRANSACTIONS..............................................................................................................16
2.2
单一地址相................................................................................................................17
2.3
设备选择（ DEVSEL ＃ ）生成........................................... ....................................... 17
2.4
数据PHASE.......................................................................................................................................17
2.5
写事务...................................................................................................................17
2.5.1
存储器写TRANSACTIONS.........................................................................................18
2.5.2
存储器写和禁止
.....................................................................................18
2.5.3
延迟写入交易
........................................................................................19
2.5.4
写事务边界............................................... .................................... 20
2.5.5
BUFFERING多写事务.............................................. ................ 20
2.5.6
快速返回到回交易
................................................................................20
2.6
读事务.....................................................................................................................20
2.6.1
预取读事务
.............................................................................21
2.6.2
动态预取控制............................................... ..................................... 21
2.6.3
非预取读取事务
...................................................................21
2.6.4
预读取地址边界
........................................................................22
2.6.5
延迟读取请求
...................................................................................................22
2.6.6
，目标延迟读取完成
.................................................................23
2.6.7
延迟读取完成引发剂BUS ............................................ ............. 23
2.6.8
FAST BACK- TO- BACK读事务
....................................................................24
2.7
配置交易................................................ ............................................... 24
2.7.1
类型0 ACCESS TO PI7C8140A................................................................................................25
2.7.2
键入1以0型转换
...........................................................................................25
2.7.3
1型1型货运
..........................................................................................26
2.7.4
特别CYCLES.......................................................................................................................27
2.8
交易TERMINATION.......................................................................................................27
2.8.1
MASTER终止INITIATED BY PI7C8140A
..........................................................28
2.8.2
MASTER中止收到PI7C8140A
.........................................................................29
2.8.3
目标终止收到PI7C8140A
...........................................................29
2.8.4
目标终止INITIATED BY PI7C8140A ............................................. .............. 31
3
地址DECODING..............................................................................................................................33
3.1
地址范围............................................................................................................................33
3.2
I / O地址译码.................................................................................................................33
3.2.1
I / O基址和限制地址寄存器
.........................................................................34
3.2.2
ISA模式
....................................................................................................................................34
3.3
存储器地址DECODING.....................................................................................................35
3.3.1
内存映射I / O基址和限制地址寄存器
..................................35
3.3.2
预取内存基址和限制地址寄存器
..........................36
第82 5
二〇〇七年三月二十日 - 修订版1.01
07-0067
QQ：2880707522 复制
