- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄362672 > EM4223V6WW11E (EM Microelectronic) Read-only UHF Radio Frequency Identification Device PDF資料下載
參數(shù)資料
| 型號： | EM4223V6WW11E |
| 廠商： | EM Microelectronic |
| 英文描述： | Read-only UHF Radio Frequency Identification Device |
| 中文描述： | 只讀超高頻射頻識別設(shè)備 |
| 文件頁數(shù)： | 6/29頁 |
| 文件大?。?/td> | 437K |
| 代理商： | EM4223V6WW11E |
第1頁第2頁第3頁第4頁第5頁當(dāng)前第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁
R
EM4223
Transponders will only transmit Data Messages to the
Reader while they are in the ROUND_ACTIVE state.
When the CURRENT SLOT NUMBER and the
SELECTED SLOT NUMBER values held by the
Transponder match, the Transponder transmits its Data
Message to the Reader. The Reply message will contain
either the SUID (the Integrated Circuit Manufacturer code
of 0x16 for MARIN and the lower 32 bits of the 128 bit
User Data) or the 128 bit User Data .
In situations where different groups of transponders
present in the reader field contain data having different
owners, a reader may selectively wake up these different
groups of transponders by means of the ISO compliant
AFI parameter in the Init_Round command or by using the
Mask parameter in the Begin_Round command. The
Begin_Round command additionally supports selection of
groups of transponders based on the user data content
according to the EPC method.
General Command Format
All commands are transmitted from the Reader to the
Transponder by means of pulse interval encoding as
defined in chapter
5: forward link encoding
, beginning with
an SOF (Start Of Frame) and terminating in an EOF (End
Of Frame). Commands are supported in accordance with
the ISO 18000-6A specification which divides commands
into the categories of MANDATORY, OPTIONAL,
CUSTOM and PROPRIETARY. The EM4223 supports all
of the ISO 18000-6A MANDATORY commands and 4 of
the ISO 18000-6A OPTIONAL commands – Init_Round,
Close_Slot, New_Round and Begin_Round. In addition,
the EM4223 implements 1 PROPRIETARY command in
accordance with the ISO 18000-6A specification – this is
the Wake_Up_FST command which uses Op-Code 0x39.
Commands are divided into 2 basic types: Short
Commands of a fixed 16 bit length and Extended
commands which consist of a 16 bit section consistent
with the Short Command format followed by a variable
length extension containing various parameters and a
second CRC of 16 bit length which covers the entire
command, including the 1
11 bits which will already have
been covered by the 5 bit CRC and the 5 bit CRC itself.
Supported Command set
The EM4223 fully supports the four ISO MANDATORY
commands:
NEXT_SLOT,
RESET_TO_READY and INIT_ROUND_ALL.
The
ISO
OPTIONAL
commands:
CLOSE_SLOT, and NEW_ROUND are also supported.
Copyright
2005, EM Microelectronic-Marin SA
6
www.emmicroelectronic.com
STANDBY_ROUND,
INIT_ROUND,
The BEGIN_ROUND command is included for Supply
Chain Logistics support.
In addition to the above, the Fast Supertag
commands:
WAKE_UP_FST and MUTE are supported for compliance
with the FST protocol. MUTE is interpreted as any
partially decoded or invalid command as described in
section
56H56H
0.
3. BASIC COMMAND FORMATS
There are 7 short commands, 2 extended commands and
1 implied command.
Short commands
Short commands are a fixed length of 16 bits, which
includes a 5 bit CRC. The commands comprise the
following fields:
Protocol extension – 1 bit.
Command Op-code – 6 bits.
Parameters – 4 bits (parameters could include flags).
CRC – 5 Bits.
SOF
RFU
(1 bit
)
Command
Code (6 bits)
Parameters &
Flags (4 bits)
CRC-5
(5 bits)
EOF
Fig. 3 General format, Short commands
Short commands are used for collision arbitration and
other immediate functions.
Extended commands
The
EM4223
supports
(
Init_Round
and
Begin_Round
). They comprise a fixed
length part of 16 bits, which is identical with the format of
the 16 bit Short Commands described above, followed by
an 8 bit fixed length parameter in the case of both of the
Extended commands, followed by a 2
parameter of
variable length up to 136 bits and terminated with a 16 bit
CRC. The Extended commands comprise the following
fields:
Protocol extension – 1 bit.
Command Op-code – 6 bits.
Parameters – 4 bits (parameters could include flags).
CRC – 5 Bits.
Extension of 8 bits (AFI) in the case of the
INIT_ROUND
command,
(MASK_LENGTH) parameter followed by a variable
length (MASK) parameter in the case of the
BEGIN_ROUND command
CRC-16 :- 16 Bits (over full message from after the
SOF to the last bit before the CRC16 itself).
2
Extended
commands
or
an
8
bit
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| EM4223V6WW7 | Read-only UHF Radio Frequency Identification Device |
| EM4223V6WW7E | Read-only UHF Radio Frequency Identification Device |
| EM4223V7SP3B | Read-only UHF Radio Frequency Identification Device |
| EM4223V7WS11 | Read-only UHF Radio Frequency Identification Device |
| EM4223V7WS7 | Read-only UHF Radio Frequency Identification Device |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EM4223V6WW7 | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Read-only UHF Radio Frequency Identification Device |
| EM4223V6WW7E | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Read-only UHF Radio Frequency Identification Device |
| EM4223V7SP3B | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Read-only UHF Radio Frequency Identification Device |
| EM4223V7WS11 | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Read-only UHF Radio Frequency Identification Device |
| EM4223V7WS11E | 制造商:EMMICRO 制造商全稱:EM Microelectronic - MARIN SA 功能描述:Read-only UHF Radio Frequency Identification Device |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。