ATA559001-6DSY Atmel, ATA559001-6DSY Datasheet - Page 59

• 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

8.3
4817C–RFID–03/07
Parameter Field
When using long commands, a parameter field transports an 8-bit data field to the tag defining
selection mode and return link modulation encoding scheme. Additionally, address information
and other command-specific data are defined.
The default structure is defined in the following way:
Table 8-8.
Depending on the command, no addressing mode bit or only one (addressing_mode(1)) bit is
used.
The power-on reset value of the parameter register is 00h.
Table 8-9.
The modulation coding is the same as used during short commands.
ATA5590 supports different addressing modes for read, write, and anticollision operations. The
addressing mode(1:0) is stored in bits 7 and 6 of the parameter field.
Mod(1:0)
Index
2:1
00
01
10
11
7
6
5
4
3
0
Function
Addressing_mode(1), if needed
Addressing_mode(0), if needed
Depends on the command
Depends on the command
Depends on the command
Return modulation type: Mod(1:0)
Select flag
0: to all (ID_s is “0”)
1: if selected (via group select (pre_select)) before or during anticollision, after ID was set
Type of Modulation
NRZI soft locked (1 / 4 of reference time)
3Phase1
NRZI notch locked
FM0
Parameter Field in Conjunction with the Defined Commands
Modulation Control Using Default Commands
ATA5590
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