ATA559001-DBW Atmel, ATA559001-DBW Datasheet - Page 71

• 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

10.2
4817C–RFID–03/07
Reset Command
After receiving the forward header, the reset command, the parameter, and the 16-bit CRC, the
tag generates a complete or a partial soft reset. The command byte is 2Bh including the 2-bit
command CRC. The selection mechanism is defined by the parameter field:
Table 10-1.
If parameter(7) is set to “1”, no answer is backscattered to the reader because the tag is asyn-
chronous to the reader. Therefore, the next notch is interpreted as the beginning of the next
forward header.
In the case of any other parameter settings in the reset command, the tag backscatters status1
and crc16 back, if the select criterion is valid.
This means that if the select bit (parameter(0)) is “0”, the message will be backscattered. If the
select bit is set to “1”, and after the reset neither pre_select nor ID is set, then no answer follows.
Notes:
Index
7
6
5
4
3
2:1
0
1. To reset the status1 register, the special bits in the parameter field have to be set separately.
2. Reset ID_s is also possible if the ID or pre_select status bits are set, and the select bit (param-
3. Parameter(3) shall be set to “0” to enable future expansion possibilities (2nd reset address).
4. If the select bit is set to “1”, the tag will not respond in the return link if the reset command has
5. If the select bit is set to “1”, and the select condition is not valid for the tag, the tag stops back-
eter(0)) is set to “1”.
reset the select condition.
scattering the received symbol in the forward link after it has received the parameter field.
Parameter Field
Function
Reset all registers except status1
Reset ID_s
Reset ID
Reset pre_select
0 (RFU)
Return link modulation
Select
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