參數(shù)資料
型號(hào)： EM4223V8WW11
廠商： EM Microelectronic
英文描述： Read-only UHF Radio Frequency Identification Device
中文描述： 只讀超高頻射頻識(shí)別設(shè)備
文件頁數(shù)： 20/29頁
文件大?。?/td> 437K
代理商： EM4223V8WW11
R
EM4223
Copyright
2005, EM Microelectronic-Marin SA
20
www.emmicroelectronic.com
MSB
LSB
128
40 33
32 1
Upper bits of UUD
Serial number (Lower 32
bits of UUD)
MSB
LSB
40 33
IC Mfg code “0x16”
Hard wired in EM4223.
32 1
Serial number
Fig. 18- UUD/SUID mapping
Transponder Unique Identifier (UID) & SUID
An ISO 18000-6A Transponder does not transmit the UID
except
in
response
Get_System_Information
command
supported in the EM4223. All other transactions are
conducted using the SUID (which is supported).
The Interrogator derives the Transponder 64 bit UID from
the SUID and it is made up as follows:
Bits 57
64 are always set to Hex ‘E0’.
Bits 49
56 carry the Integrated Circuit
Manufacturers Code
Bits 33
48 are always set to Hex ‘0000’
Bits 1
32 carry the 32 bit Serial number.
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.
to
the
optional
which
ISO
not
is
Personality Block
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.
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
WAKE_UP_FST
command.
INIT_ROUND_ALL and BEGIN_ROUND commands will
switch Transponders to the ISO mode of operation.
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
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.
INIT_ROUND,
WUS
bit.
Similarly,
FST/ISO Flag
(pbit 1)
Wake Up
Status
Flag
(pbit 0)
Tag State
Transponder SUID and
Roundsize Initialize
Conditions
Mode
Power Up Condition
1
1
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
ROUND_ACTIVE –Tag Talks First mode
Don’t care
ISO
1
0
Don’t care
MOD_ISO
0
1
SUID flag = 0
Roundsize = 16
SUID flag = 0
Roundsize = 16
FST (RTF)
0
0
FST (TTF)
Table18 - Transponder Operational Modes
Personality Block 0- Bit 2 determines the Transponder Reply data rate:
0 = 40 kb/s
1 = 160 kb/s
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