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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 : Begin_Round (Tag will be in ISO mode after this command)  
Initial State  
Ready  
Criteria  
Action  
New State  
Number of bits of the MASK specified by  
MASK_LENGTH in the command matches the  
data in the Tag (AFI followed by USER DATA).  
If the 1st 8 bits of the MASK = 0 they are not  
compared.  
Tag chooses a random slot in which it  
will send its response. Tag’s Current Slot  
Counter is reset to first slot.  
Round_Active  
Number of bits of the MASK specified by  
MASK_LENGTH in the command does not  
match the data in the Tag.  
None  
Ready  
Quiet  
None  
None  
Quiet  
Round_Active  
Number of bits of the MASK specified by  
MASK_LENGTH in the command matches the  
data in the Tag (AFI followed by USER DATA).  
If the 1st 8 bits of the MASK = 0 they are not  
compared.  
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  
Number of bits of the MASK specified by  
MASK_LENGTH in the command does not  
match the data in the Tag.  
None  
Ready  
Round_Standby  
Number of bits of the MASK specified by  
MASK_LENGTH in the command matches the  
data in the Tag (AFI followed by USER DATA).  
If the 1st 8 bits of the MASK = 0 they are not  
compared.  
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  
Number of bits of the MASK specified by  
MASK_LENGTH in the command does not  
match the data in the Tag.  
None  
Ready  
Table 10 – Tag state transitions for Begin_Round  
Command : Wake_Up_FST (Tag will be in FST 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 11 – Tag state transitions for Wake_Up_FST  
12  
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Copyright © 2005, EM Microelectronic-Marin SA  
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