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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  
MSB  
LSB  
1
128  
40  
33  
32  
Serial number (Lower 32  
bits of UUD)  
Upper bits of UUD  
MSB  
40  
LSB  
1
33  
32  
Serial number  
IC Mfg code “0x16”  
Hard wired in EM4223.  
Fig. 18- UUD/SUID mapping  
Transponder Unique Identifier (UID) & SUID  
Personality Block  
An ISO 18000-6A Transponder does not transmit the UID  
The personality block contains 3 control bits. The default  
state of these bits is programmed during manufacture.  
These bits control the Wake Up Status flag (WUS), the  
power up selection of FST or ISO mode of operation and  
the Return Link Bit Rate.  
except  
in  
response  
to  
the  
optional  
ISO  
Get_System_Information command which is not  
supported in the EM4223. All other transactions are  
conducted using the SUID (which is supported).  
Transponders will power up in the default mode set by the  
bits programmed during manufacture. Only the FST/ISO  
mode flag can be changed by Reader commands.  
Transponders will be switched to FST mode by the  
The Interrogator derives the Transponder 64 bit UID from  
the SUID and it is made up as follows:  
ƒ
ƒ
Bits 57 Æ 64 are always set to Hex ‘E0’.  
Bits 49 Æ 56 carry the Integrated Circuit  
Manufacturers Code  
WAKE_UP_FST  
command.  
INIT_ROUND,  
INIT_ROUND_ALL and BEGIN_ROUND commands will  
switch Transponders to the ISO mode of operation.  
ƒ
ƒ
Bits 33 Æ 48 are always set to Hex ‘0000’  
Bits 1 Æ 32 carry the 32 bit Serial number.  
The state of the WUS bit cannot be changed from the  
value set during manufacture. Transponders will operate  
in ISO or MOD_ISO mode depending on the factory  
programmed state of the WUS bit. Similarly,  
Transponders will operate as TTF or as RTF in FST  
mode depending on the factory programmed state of the  
WUS bit. It is important to note that tags can only switch  
between MOD_ISO and FST (TTF) or between ISO and  
FST (RTF) modes.  
AFI  
Application Family Identifier - 8 bits per ISO 18000-6  
clause 7.2.3. If the AFI byte is set with all 00 the tag will  
respond, or if the AFI in the tag matches the AFI byte in  
the init-round command the tag will respond, otherwise  
the tag will remain quiet.  
Wake Up  
Status  
Flag  
Transponder SUID and  
Roundsize Initialize  
Conditions  
FST/ISO Flag  
Tag State  
Mode  
(pbit 1)  
(pbit 0)  
Power Up Condition  
READY – Transponder replies in its selected  
slot in each round.  
READY - Transponder replies in both the first  
slot and its selected slot in every round  
ROUND_STANDBY state, Reader Talks First  
mode  
1
1
0
0
1
0
1
0
Don’t care  
Don’t care  
ISO  
MOD_ISO  
FST (RTF)  
FST (TTF)  
SUID flag = 0  
Roundsize = 16  
SUID flag = 0  
ROUND_ACTIVE –Tag Talks First mode  
Roundsize = 16  
Table18 - Transponder Operational Modes  
Personality Block 0- Bit 2 determines the Transponder Reply data rate:  
0 = 40 kb/s  
1 = 160 kb/s  
20  
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Copyright © 2005, EM Microelectronic-Marin SA  
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