ATA559001-DBW Atmel, ATA559001-DBW Datasheet - Page 92

• 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

13.7.6
13.7.7
92
ATA5590
Bit-pointer–addressing Deterministic-anticollision and Group-selection Commands
Anticollision_pointer and Group_pointer
If the application requires the option of starting the arbitration outside the ID page, or to start with
a different bit position, ATA5590 supports bit-pointer addressing methods.
Bit-pointer–based commands also support a care_ctrl bit (address(5)). If this bit is set to “1” and
the reader transmits a “1”, the result of the arbitration is don't care.
With these commands the reader can select tags, but the reader is free
The commands codes are:
The 2-bit command CRC is included.
The result of the group routine will affect the pre_select flag. The result of the anticollision proce-
dure will affect the ID and ID_s flags (anticollision_pointer), or the pre_select flag
(Group_pointer).
Table 13-9.
Table 13-10. Address Information Stored in the Address Field
Therefore, each bit in each block of the whole memory of ATA5590 can be addressed as the
start address for arbitration.
• To address other memory locations as the ID page
• To start at a special bit value of the selected page
• 4Eh (Anticollision_pointer) and
• 49h (Group_pointer)
Index
Bit 7
5:3
2:1
7
6
0
Block(1:0)
Function
0: physical address
1: symbolic address
nCRC_adapt
0: adapt CRC
1: 16-bit CRC transmitted by the reader
Short symbolic or short physical address
Return modulation type
00: NRZI notch locked
01: 3phase1
10: NIRZ soft locked
11: FM0
Selection control
0: to all tags in the field
1: to all pre-selected tags in the field
Parameter Field of the Anticollision_pointer and the Group_pointer Command
Bit 6
0 (default)
Bit 5
Bit 4
Bit 3
Bit(4:0)
Bit 2
Bit 1
4817C–RFID–03/07
Bit 0