 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
EM4223V3WS11E Datasheet(PDF) 7 Page - EM Microelectronic - MARIN SA |
|
||||||||||||||||||||||||||||||
EM4223V3WS11E Datasheet(HTML) 7 Page - EM Microelectronic - MARIN SA |
|
|
7 / 29 page  R EM4223 Copyright © 2005, EM Microelectronic-Marin SA 7 www.emmicroelectronic.com SOF RFU (1 bit) Command Code (6 bits) Parameters & Flags (4 bits) CRC-5 (5 bits) 1 st Optional Parameter (8 bits) 2 nd Optional Parameter (0-136 bit) CRC-16 16 bits EOF Fig. 4 - General format, Extended commands The 2 Extended commands supported by the EM4223 are used to all selected sub-populations of Tags to be introduced to the Arbitration process. Implied MUTE command (Fast Supertag Mode only) When operating in the Fast Supertag Mode and in the ACTIVE state, the reception of the first low-going pulse of any command causes the EM4223 to move to the ROUND_STANDBY state. This could be any single pulse or the first pulse of the SOF of a valid command. The Transponder will continue to decode the command. A known and valid command causes the Transponder to execute the command and to move to either the ROUND_ACTIVE or the READY state, depending on the command and its parameters (if any). An unknown command or a command having an error will cause the Transponder to remain in the ROUND_STANDBY state. During reception of a command, and until the command has been correctly received, the Transponder will hold- off any attempt to reply until the command has been correctly received and executed. At the end of receiving a command, if it has not been correctly decoded, the Transponder will remain in the ROUND_STANDBY state until moved out of this state by the first correctly received and decoded command. If the Tag is in the Fast Supertag Mode and in the TTF (Tag Talks First) sub-mode (Wake Up Status Flag = X00), the Tag will automatically leave the ROUND_STANDBY state after a timeout period of 2.5 X 176 tag bit periods has elapsed since the last MUTE command (176 bits = maximum Tag Data Message length).This timeout will be reset each time a new implied MUTE command is received. Command Protocol Extension Op- Code 6 bits Parameter / flags 4 bits CRC-5 Extended parameters CRC-16 Comments Init-Round Always = 0 01 SUID 1 bit Round Size 3 bits 5 bits AFI 8 bits 16 bits SUID = 0 tag responds with the 128 bits of user data. SUID = 1 tag responds with SUID. If AFI field = 00H, all tags respond, else if AFI is other value, only tags with matching AFI respond. Also moves tags already active in FST mode to ISO mode. Next-Slot Always = 0 02 * Signature 4 bits 5 bits The signature must match the signature value transmitted by the tag in its last reply to acknowledge the tag’s reply. Advances the CURRENT SLOT COUNTER. Close Slot Always = 0 03 Ignored by EM4223 5 bits Advances the CURRENT SLOT COUNTER. Standby- Round Always = 0 04 * Ignored by EM4223 5 bits The signature is not used in this implementation because the EM4223 has no select state. The EM4223 will always move to the ROUND_STANDBY state. New-Round Always = 0 05 SUID 1 bit Round size 3 bits 5 bits Reset-To- Ready Always = 0 06 * Ignored by EM4223 5 bits Moves Transponder from current state to READY state. Init-Round- All Always = 0 0A * SUID 1 bit Round size 3 bits 5 bits SUID = 0 tag responds with the128 bits of user data. SUID = 1 tag responds with SUID. Also moves tags already active in FST mode to ISO mode. |
Similar Part No. - EM4223V3WS11E |
|
Similar Description - EM4223V3WS11E |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.NET |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
