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SAB82525H-V21 参数 Datasheet PDF下载

SAB82525H-V21图片预览
型号: SAB82525H-V21
PDF下载: 下载PDF文件 查看货源
内容描述: 高层次的串行通信控制器扩展 [High-Level Serial Communication Controller Extended]
分类和应用: 通信控制器
文件页数/大小: 126 页 / 741 K
品牌: SIEMENS [ Siemens Semiconductor Group ]
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SAB 82525  
SAB 82526  
SAF 82525  
SAF 82526  
Since the on-chip timer of the HSCX must be operated in the external mode (a secondary may  
not poll the primary for acknowledgements), time supervisory must be done by the primary  
station.  
Upon the arrival of an acknowledgement the XFIFO is enabled and an interrupt is forwarded  
to the CPU, either the  
– message has been acknowledged as positive (XPR interrupt), or the  
– message must be repeated (XMR interrupt).  
Additionally, the timer can be used under CPU control to provide timer recovery of the  
secondary if no acknowledgements are received at all.  
Note: The transmission of transparent frames is possible only if the permission to send is  
achieved by an S-frame (p = 1) or I-frame.  
Semiconductor Group  
35  
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