PI7C8148A
双端口PCI至PCI桥接器
超前信息
目录
1
信号DEFINITIONS.............................................................................................................................13
1.1
信号TYPES....................................................................................................................................13
1.2
信号的..............................................................................................................................................13
1.2.1
主总线接口信号
...................................................................................13
1.2.2
辅助总线接口信号
.............................................................................14
1.2.3
时钟信号
........................................................................................................................16
1.2.4
其他信号
....................................................................................................16
1.2.5
通用I / O接口信号
.................................................................17
1.2.6
电源和GROUND..............................................................................................................17
1.3
引脚列表 - 160 -PIN LFBGA.................................................................................................................18
2
PCI总线OPERATION...............................................................................................................................19
2.1
交易类型..............................................................................................................19
2.2
单一地址PHASE.................................................................................................................20
2.3
设备选择（ DEVSEL ＃ ）生成........................................... ....................................... 20
2.4
数据PHASE.......................................................................................................................................20
2.5
写TRANSACTIONS....................................................................................................................20
2.5.1
存储器写TRANSACTIONS.........................................................................................21
2.5.2
存储器写和禁止
.....................................................................................22
2.5.3
延迟写入交易
........................................................................................22
2.5.4
写事务边界............................................... .................................... 23
2.5.5
BUFFERING多写事务.............................................. ................ 23
2.5.6
快速返回到回交易
................................................................................23
2.6
读事务.....................................................................................................................24
2.6.1
预取读事务
.............................................................................24
2.6.2
动态预取控制............................................... ..................................... 24
2.6.3
非预取读取事务
...................................................................24
2.6.4
预读取地址边界
........................................................................25
2.6.5
延迟读取请求
...................................................................................................25
2.6.6
，目标延迟读取完成
.................................................................26
2.6.7
延迟读取完成引发剂BUS ............................................ ............. 26
2.6.8
FAST BACK- TO- BACK读事务
....................................................................27
2.7
配置TRANSACTIONS................................................................................................27
2.7.1
类型0 ACCESS TO PI7C8148A................................................................................................28
2.7.2
键入1以0型转换
...........................................................................................28
2.7.3
1型1型货运
..........................................................................................29
2.7.4
特别CYCLES.......................................................................................................................30
2.8
交易TERMINATION.......................................................................................................30
2.8.1
MASTER终止INITIATED BY PI7C8148A
..........................................................31
2.8.2
MASTER中止收到PI7C8148A
.........................................................................32
2.8.3
目标终止收到PI7C8148A
...........................................................32
2.8.4
目标终止INITIATED BY PI7C8148A ............................................. .............. 34
3
地址DECODING..............................................................................................................................36
3.1
地址范围............................................................................................................................36
3.2
I / O地址DECODING..................................................................................................................36
3.2.1
I / O基址和限制地址寄存器
.........................................................................37
3.2.2
ISA模式
....................................................................................................................................37
3.3
存储器地址译码方式.....................................................................................................38
3.3.1
内存映射I / O基址和限制地址寄存器
..................................38
3.3.2
预取内存基址和限制地址寄存器
..........................39
第90 5
2004年6月 - 修订版1.04
QQ：2880707522 复制
