User's Manual
Table Of Contents
- Table of Contents
- Preface
- 1 Introduction and Description
- 2 Using the EVM
- 3 EVM Software
- 3.1 Software Installations
- 3.2 Software Installation for Rev. A EVM
- 3.3 Software Interface
- 3.4 Set Protocol
- 3.5 ISO/IEC 15693 Protocol
- 3.5.1 Inventory
- 3.5.2 Read Single Block
- 3.5.3 Write Single Block
- 3.5.4 Lock Block
- 3.5.5 Read Multiple Blocks
- 3.5.6 Write Multiple Blocks
- 3.5.7 Stay Quiet
- 3.5.8 Select
- 3.5.9 Reset to Ready
- 3.5.10 Write AFI (Application Family Identifier)
- 3.5.11 Lock AFI (Application Family Identifier)
- 3.5.12 Write DSFID (Data Storage Format ID)
- 3.5.13 Lock DSFID (Data Storage Format ID)
- 3.5.14 Get System Info
- 3.5.15 Get Multiple-Block Security Status (Get Mult_Blk Sel Status)
- 3.6 ISO/IEC 14443A Protocol
- 3.7 ISO/IEC 14443B Protocol
- 3.8 Tag-it Protocol
- 3.9 Find Tags
- 3.10 Registers
- 3.11 Test
- A ISO/IEC 15693 Reference Material
- B Tag-it Reference Material
- Important Notices
3.5.1Inventory
www.ti.com
ISO/IEC15693Protocol
TheInventorycommandisusedtoacquiretheuniqueIDs(UID)ofISO15693tagsinthereadzone.The
twoinventorymethodssupportedare16-slottedandsingle-slot.Asingle-slotrequestallowsall
transpondersinthereadzonetoreplytotheInventoryrequest.Incaseswheremorethanonetagis
present,sucharequestwouldcauseadatacollision,whichinturncausesareadertosendacollision
errormessagetotheGUI.A16-slotinventorysequencedecreasesthelikelihoodofadatacollisionby
forcingcomplianttransponderstorespondin1of16slots,basedonaportionoftheirUIDs.Toperforma
slottedsequence,theSlotMarker/End-of-Framerequestisusedinconjunctionwiththiscommand.Any
collisionthatdoesoccurinaslottedsequencecanbefurtherarbitratedbyusingtheanticollisionmaskin
analgorithmsimilartothatoutlinedintheISO15693standard.
Toinventoryatag,theusershould:
•ClickthebuttonforInventoryintheCommandswindow.
•ClickonanyflagsthatmustbesetintheTagFlagswindow.
•ClickonSetProtocol.
•Executethecommand.
Information:
Whenrequestingthe16-slotmethod,theEVMtransmitterremainsONinordertopreservethetag
stateschangedbytherequest.
SLOU192C–November2006–RevisedDecember2008EVMSoftware31
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