PI7C8150B
异步双端口PCI - TO- PCI桥接器
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................................................ ...........................................
16
2.2.5
通用I / O接口信号
........................................................ 17
2.2.6
JTAG边界扫描信号
................................................................................ 17
2.2.7
电源和GROUND.....................................................................................................
18
2.3
引脚列表 - 208 -PIN FQFP .......................................................................................................... 18
2.4
引脚列表 - 256引脚PBGA ..................................................................................................... 20
3
PCI总线操作..................................................................................................................... 22
3.1
类型TRANSACTIONS..................................................................................................... 22
3.2
单一地址相....................................................................................................... 23
3.3
设备选择（ DEVSEL_L ）的生成............................................ .......................... 23
3.4
数据阶段............................................................................................................................. 23
3.5
写事务.......................................................................................................... 23
3.5.1
存储器写事务............................................... .................................
24
3.5.2
存储器写和禁止
............................................................................ 25
3.5.3
延迟写入交易............................................... ................................
25
3.5.4
写事务地址边界.............................................. .........
26
3.5.5
BUFFERING多写事务.............................................. .......
26
3.5.6
快速返回到回交易
....................................................................... 27
3.6
读TRANSACTIONS............................................................................................................ 27
3.6.1
预取读事务............................................... .....................
27
3.6.2
非预取读取事务............................................. .............
27
3.6.3
预读取地址边界
............................................................... 28
3.6.4
延迟读取请求
.......................................................................................... 28
3.6.5
，目标延迟读取完成
........................................................ 29
3.6.6
延迟读取完成引发剂BUS ............................................ ....
29
3.6.7
FAST BACK- TO- BACK读事务
............................................................. 30
3.7
配置交易................................................ ...................................... 30
3.7.1
类型0 ACCESS TO PI7C8150B ............................................. ..........................................
31
3.7.2
键入1以0型转换
.................................................................................. 31
3.7.3
1型1型货运............................................ .....................................
33
3.7.4
特殊循环
............................................................................................................. 33
3.8
交易终止................................................ ............................................. 34
3.8.1
MASTER终止INITIATED BY PI7C8150B
................................................. 35
3.8.2
MASTER中止收到PI7C8150B
................................................................ 36
3.8.3
目标终止收到PI7C8150B ............................................. .....
36
3.8.4
目标终止INITIATED BY PI7C8150B ............................................. .....
38
4
地址DECODING..................................................................................................................... 40
4.1
地址范围................................................................................................................... 40
4.2
I / O地址DECODING........................................................................................................ 40
4.2.1
I / O基址和限制地址寄存器.......................................... ......................
41
4.2.2
ISA MODE...........................................................................................................................
42
第108 5
2006年4月 - 修订版2.02
06-0044
QQ：2881677436 复制
