ATA559001-DBW Atmel, ATA559001-DBW Datasheet - Page 30

• Manufacturer Part Number: ATA559001-DBW
• Description: RF Wireless Misc UHF (1kbit r/w anti- collis. Ni-Au)
• Manufacturer: Atmel

Specifications of ATA559001-DBW

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.9.4
Observe State
To enable further actions, such as programming, the chip must be synchronous to the reader.
Therefore, some checks have to be made over the stream which is received by the tag (timing of
the forward header must be valid, the command must be known, and the first command CRC
must be valid).
If these checks pass, the tag is synchronous to the modulated stream transmitted by the reader.
Figure 4-13. Observe State
Error
First notch
detected
received
sync = 0
Start
header_ok
Receive
header
Check fail
CRC check
Receive
command
command
EOF
CRC ok
Command
sync = 1
frame ready
Ready
ATA5590
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4817C–RFID–03/07