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EM4223V2WS11 参数 Datasheet PDF下载

EM4223V2WS11图片预览
型号: EM4223V2WS11
PDF下载: 下载PDF文件 查看货源
内容描述: 只读超高频射频识别设备 [Read-only UHF Radio Frequency Identification Device]
分类和应用: 射频
文件页数/大小: 29 页 / 426 K
品牌: EMMICRO [ EM MICROELECTRONIC - MARIN SA ]
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R
EM4223  
Command state transitions  
The following tables show the state transitions for each of the commands supported by the EM4223 and should be read in  
conjunction with Fig. 19.  
Command : Init_Round (Tag will be in ISO mode after this command)  
Initial State  
Ready  
Criteria  
Action  
New State  
AFI in the command = 0 or tags AFI value  
matches the value in the command.  
Tag chooses a random slot in which it  
will send its response. Tag’s Current Slot  
Counter is reset to first slot.  
None  
Round_Active  
AFI in the command <> and Tags AFI value <>  
AFI value in the command.  
Ready  
Quiet  
None  
None  
Quiet  
Round_Active  
AFI in the command = 0 or tags AFI value  
matches the value in the command.  
Tag chooses a new random slot in which  
it will send its response. Tag’s Current  
Slot Counter is reset to first slot.  
None  
Round_Active  
AFI in the command <> and Tags AFI value <>  
AFI value in the command.  
Ready  
Round_Standby AFI in the command = 0 or tags AFI value  
Tag chooses a new random slot in which  
it will send its response. Tag’s Current  
Slot Counter is reset to first slot.  
Round_Active  
matches the value in the command.  
AFI in the command <> and Tags AFI value <>  
AFI value in the command.  
None  
Ready  
Table 7 – Tag state transitions for Init_Round  
Command : New_Round  
Initial State  
Criteria  
Action  
New State  
Ready  
Quiet  
Round_Active  
None  
None  
None  
None  
None  
Ready  
Quiet  
Round_Active  
Tag chooses a new random slot in which  
it will send its response. Tag’s Current  
Slot Counter is reset to first slot.  
Round_Standby  
None  
Tag chooses a new random slot in which  
it will send its response. Tag’s Current  
Slot Counter is reset to first slot.  
Round_Active  
Table 8 – Tag state transitions for New_Round  
Command : Init_Round_All (Tag will be in ISO mode after this command)  
Initial State  
Ready  
Criteria  
Action  
New State  
None  
Tag chooses a random slot in which it  
will send its response. Tag’s Current Slot  
Counter is reset to first slot.  
Round_Active  
Quiet  
Round_Active  
None  
None  
None  
Quiet  
Round_Active  
Tag chooses a new random slot in which  
it will send its response. Tag’s Current  
Slot Counter is reset to first slot.  
Tag chooses a new random slot in which  
it will send its response. Tag’s Current  
Slot Counter is reset to first slot.  
Round_Standby  
None  
Round_Active  
Table 9 – Tag state transitions for Init_Round_All  
11  
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