TMS320x2833x,2823xDSC 接口扩展
(XINTF)
参考指南
文献编号:SPRU949D
September2007–RevisedJanuary2010
前言..................................................................................................................................................5
1功能描述..............................................................................................................................7
1.1 与 TMS320x281xXINTF 的区别...............................................................................................7
1.2 与 TMS320x2834xXINTF 的区别.............................................................................................8
1.3 访问 XINTF 空间.....................................................................................................................8
1.4
写操作紧跟读操作的流水线保护.........................................................................................9
2XINTF 功能配置.......................................................................................................................10
2.1 外部接口(XINTF)配置寄存器及时序寄存器的设置..............................................................10
2.2XINTF 时钟.............................................................................................................................11
2.3
写缓存..................................................................................................................................12
2.4
每个 XINTF区域的访问建立/激活/跟踪状态的定时.........................................................12
2.5
对每个区采样 XREADY......................................................................................................13
2.6
储体转接..............................................................................................................................13
2.7
区数据总线宽度.....................................................................................................................14
3外部 DMA 支持(XHOLD,XHOLDA)...........................................................................................16
4建立，激活及跟踪状态的配置...............................................................................................17
4.1
忽略 USEREADY 信号.........................................................................................................17
4.2
同步模式(USEREADY=1,READYMODE=0)..................................................................18
4.3
异步模式(USEREADY=1,READYMODE=1)..........................................................................18
5 配置 XBANK 周期......................................................................................................................22
6XINTF 寄存器.........................................................................................................................23
6.1XINTF
定时寄存器.........................................................................................................23
6.2XINTF
配置寄存器..............................................................................................................27
6.3XBANK
寄存器.................................................................................................................29
6.4XREVISION
寄存器.............................................................................................................29
6.5XRESET
寄存器................................................................................................................29
7 信号说明...............................................................................................................................31
8 波形.............................................................................................................................................32
附录 A 修订历史记录.................................................................................................................37
图目录
1
外部接口框图........................................................................................................................9
2
访问流程图...........................................................................................................................11
剩余26页未读，继续阅读
