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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  
2.7 Transmit Data Flow  
Two different types of frames can be transmitted:  
I-frames and  
transparent frames  
as shown below.  
Ι
FLAG  
ADDR  
CTRL  
CRC  
FLAG  
ADDRESS  
CONTROL  
DATA  
CHECKRAM  
*1  
Transmit  
Transparent  
Frame  
XFIFO  
(XTF)  
XFIFO  
*1  
Transmit  
I-Frame  
(XIF)  
XAD1  
XAD2  
ITD00229  
*1 Optional checkram handling in version 2 upward  
Figure 9  
Transmit Data Flow of HSCX  
For I-frames (command XIF via CMDR register), the address and control fields are generated  
autonomously by the HSCX and the data in the XFIFO is entered into the information field of  
the frame. This is possible only, if the HSCX is operated in the auto-mode.  
For transparent frames (command XTF via CMDR register), the address and the control fields  
have to be entered in the XFIFO as well. This is possible in all operating modes and used also  
in auto-mode for sending U-frames.  
Semiconductor Group  
27  
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