ATA559001-DBW Atmel, ATA559001-DBW Datasheet - Page 45
ATA559001-DBW
Manufacturer Part Number
ATA559001-DBW
Description
RF Wireless Misc UHF (1kbit r/w anti- collis. Ni-Au)
Manufacturer
Atmel
Datasheet
1.ATA559001-6DSY.pdf
(107 pages)
Specifications of ATA559001-DBW
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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6.3
4817C–RFID–03/07
Access to Memory
Table 6-7.
The table above also contains temporary commands which are specified in
commands are based on the command which was previously received by the tag. If the function
is not enabled, an error code is backscattered.
Note:
Table 6-8.
ATA5590 supports several addressing mechanisms to optimize the memory access mechanism.
Command
Wakeup_s
Wakeup_sb
Repeat_arb
Slot
Slot_selected
Slot_not_selected
Slot_repeat
Skip_slot
Slot_close
Command
Repeat_arb
Skip_slot
• Long physical (up to 11 bits) and symbolic addresses (8 bits)
• Short address (3 bits)
• Short symbolic address (3 bits)
In the case of an invalid command (CRC was received correctly), the following communication
stream will not be disturbed, and therefore no blocking situation can occur.
Short Anticollision Commands
Temporary Commands
Short Description
Each selected tag answers in one of 16 slots,
and backscatters the ID plus 8-bit DSFID
Tags which are not selected answer as
described for Wakeup_s
Repeats the long-arbitration or group_selection
command which was previously received
The return header and the following frames are
the same as for the last command
Aloha
Aloha
Aloha
Aloha
Aloha
Aloha
Short Description
Used to speed up deterministic anticollision procedures.
Used only in Aloha procedures, if the reader has detected a collision and
deterministic anticollision is not supported by the reader.
The last Aloha command is repeated. The slot counter is incremented. The ID_s
status flag is not influenced.
Comment
Used to shorten the anticollision
timing
Repeat_arb is a temporary
command
All switching and tuning
possibilities are enabled
Affects ID_s
(ID or pre_select) and not ID_s
Affects ID_s
Not ID and not ID_s and not
pre_select
Affects ID_s
ID_s is not affected
ID_s is not affected
Skip_slot is a temporary
command
Affects ID_s
Table
ATA5590
6-8. These
45
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