ATA559001-DDT Atmel, ATA559001-DDT Datasheet - Page 27

• Manufacturer Part Number: ATA559001-DDT
• Description: RF Wireless Misc UHF (1kbit r/w anti-collision)
• Manufacturer: Atmel

4.9
4817C–RFID–03/07
States of the Tag
To minimize communication problems, the tag has to first become synchronous to the RF
stream transmitted by a reader; after this the tag is ready for communication.
Additionally, most of the operations are controlled by select conditions which are fully controlled
by the reader, and are based on the status1 register contents.
Figure 4-10. Operation Flow
To enable this operation flow, the tag must be in one of the following top view states:
• RF field off
• RF field on
• Start state
• Observe state
• Ready state
• Active state
• Mute state
• Isolated state
RF_off
Refresh status1
Power on Reset
RF field
on
Operation
Link failed
Supply voltage
ok
ATA5590
Synchroni-
Link ok
sation
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