ATA559001-6DSY Atmel, ATA559001-6DSY Datasheet - Page 94

• Manufacturer Part Number: ATA559001-6DSY
• Description: RF Wireless Misc UHF (1k bit r/w anti-collision)
• Manufacturer: Atmel

Specifications of ATA559001-6DSY

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

13.7.10
13.7.11
Figure 13-7. Structure of the Wakeup_s and Wakeup_sb Procedure
94
ATA5590
Repeat_arb
Wakeup_s and Wakeup_sb
Header
Command
8 bits
Repeat_arb can be activated if the reader has previously transmitted a group-selection or a
deterministic-arbitration command. Then the command which was received before is repeated.
The command code of the repeat_arb command is not stored in the command register. There-
fore, repeat_arb is a temporary command. The reader can send the repeat_arb command as
long as the long group-select or deterministic-anticollision command is used.
If ATA5590 has not previously received a long-arbitration or group-select command, ATA5590
backscatters the error code command not known, which is marked as a sub-carrier during the
first symbol after EOF1.
Table 13-11. Construction of the Repeat_arb Command
The wake-up command generates an answer which is split in two parts:
The wakeup_s and wakeup_sb command are short commands. If the select condition is true, all
addressed tags in the field backscatter information back to the reader indicating that they are in
the field. The answering mechanism of the slot area is based on a random number.
The wakeup_s command results in an answer of all selected tags in the field (ID or pre_select is
“1”, and ID_s is “0”).
Wakeup_sb results in an answer of all tags which are not selected (ID, ID_s, and pre_select are
“0”).
After receiving a wake-up command, the tag which was addressed by the select condition
answers. The return link stream is split in the following regions:
• Slotted information: a tag modulates one of the 16 slots; the slot number is calculated by a
• ID information: the tag backscatters the 8-bit structure code (DSFID) of the ID, the ID, and the
• A slot region which is based on 16 bits. The addressed tag modulates one of the 16 bit slots.
• A structure code area. The addressed tag backscatters the DSFID code (default) or the 8-bit
• ID information (the lower 96 bits of the ID page)
• A CRC region
• An EOT area
random number generator
CRC (starting with bit 103 of the ID page)
The other slots are not modulated.
information which is stored in the lower byte of block 3 of the ID page.
Bit 7
0
EOT
Header
Bit 6
1
Slot region
16 bits
Bit 5
0
Loop possibility
DSFID
8 bits
Bit 4
0
96 bits
Bit 3
ID
1
Bit 2
0
16 bits
CRC
Bit 1
EOT
CRC(1:0)
4817C–RFID–03/07
Bit 0