PI7C8152A & PI7C8152B
双端口PCI至PCI桥接器
超前信息
目录
1
2
引言.............................................................................................................................. 11
信号定义................................................................................................................... 12
2.1
S
IGNAL
T
YPES
............................................................................................................................... 12
2.2
S
IGNALS
........................................................................................................................................ 12
2.2.1
主总线接口信号
.......................................................................... 12
2.2.3
时钟信号
............................................................................................................... 15
2.2.4
杂项信号的................................................ ...........................................
15
2.2.5
电源和GROUND.....................................................................................................
16
2.3
引脚列表 - 160 -PIN MQFP.......................................................................................................... 16
3
PCI总线操作..................................................................................................................... 17
3.1
交易类型..................................................................................................... 17
3.2
单一地址PHASE........................................................................................................ 18
3.3
双地址PHASE........................................................................................................... 18
3.4
设备选择（ DEVSEL_L ）的生成............................................ ........................... 19
3.5
数据PHASE.............................................................................................................................. 19
3.6
写事务.......................................................................................................... 19
3.6.1
存储器写事务............................................... .................................
20
3.6.2
存储器写和禁止
............................................................................ 21
3.6.3
延迟写入交易............................................... ................................
21
3.6.4
写事务地址边界.............................................. .........
22
3.6.5
BUFFERING多写事务.............................................. .......
22
3.6.6
FAST BACK- TO- BACK写事务
......................................................... 23
3.7
读事务............................................................................................................ 23
3.7.1
预取读事务............................................... .....................
23
3.7.2
非预取读取事务............................................. .............
23
3.7.3
预读取地址边界
............................................................... 24
3.7.4
延迟读取请求
.......................................................................................... 24
3.7.5
延迟读完成有关目标总线
.................................................... 25
3.7.6
延迟读取完成引发剂BUS ............................................ ....
25
3.7.7
FAST BACK- TO- BACK读事务
............................................................. 26
3.8
配置交易................................................ ...................................... 26
3.8.1
类型0 ACCESS TO PI7C8152x
....................................................................................... 27
3.8.2
键入1以0型转换
.................................................................................. 27
3.8.3
1型1型货运............................................ .....................................
29
3.8.4
特殊循环
............................................................................................................. 30
3.9
交易TERMINATION..............................................................................................三十
3.9.1
MASTER终止INITIATED BY PI7C8152x ............................................. .....
31
3.9.2
MASTER中止收到PI7C8152x ............................................. ....................
32
3.9.3
目标终止收到PI7C8152x
.................................................. 32
3.9.4
目标终止INITIATED BY PI7C8152x
.................................................. 35
4
地址DECODING..................................................................................................................... 36
4.1
地址范围................................................................................................................... 37
4.2
I / O地址译码........................................................................................................ 37
4.2.1
I / O基址和限制地址寄存器.......................................... ......................
38
4.2.2
ISA MODE...........................................................................................................................
38
4.3
存储器地址译码方式............................................... ............................................. 39
4.3.1
内存映射I / O基址和限制地址寄存器
......................... 39
4.3.2
预取内存基址和限制地址寄存器
................. 40
第90 5
2003年10月16日 - 修订版1.11
QQ：2880707522 复制
