ATA555811-DDW Atmel, ATA555811-DDW Datasheet - Page 24

• Manufacturer Part Number: ATA555811-DDW
• Manufacturer: Atmel

Specifications of ATA555811-DDW

• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Not Compliant

Table 6-1.
7. Command Set
Table 7-1.
24
Command
Read Single Block
Read Multiple Blocks
Write Single Block
Login Write
Login Read
GetID
GetID (Tag ID-part, even)
GetID (Tag ID-part, odd)
Select (Tag ID)
SelectAll
SelectGroup
SelectNGroup
ResetSelected
ResetToReady
ArmClear
ClearAll
Parameter
Tag reaction time
Tag to Interrogator
response time
End of anticollision
loop to start of SOF
(and CRC) response
Note:
In the above example the following is assumed: f
T
ATA5558 [Preliminary]
Bit
= 32
Anti-collision Timing
List of ATA5558 Supported Commands
T
C
Remark
End of start gap to start of
tag command processing
End of final command gap
to start of tag SOF
acknowledge
Final bit of Tag ID = 0
Final bit of Tag ID = 1
The first two bits of any interrogator command are called Start Of Command (SOC) and are
always 00 . This pulse interval is used for auto calibration purposes. The following series of dual
bit packets define the interrogator command opcodes and the command dependant parameter
information. A command overview is given in
SOC
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
01 11 01 11 10
01 11 01 10 10
11 10 00 00
11 00 00 00
11 00 10 00
01 01 11 11
10 0[0]n 1
10 1[0]n 1
Opcode
00 00
00 00
00 00
10 00
00 1
01
01
01
Symbol
T
Number of Parameter bits
C
T
T
T
Tag
IR
= 125 kHz; T
Length of partial Tag ID
Length of partial Tag ID
0
1
Length of Tag ID mask
Length of Tag ID mask
34
12 (+ 16 CRC_d)
40 (+ 16 CRC_d)
Length of Tag ID
6 (+ 16 CRC_d)
0 (+ 16 CRC_d)
None
None
None
None
6
d
(see
2
32
32
11
max + 1½
C
0
T
= 1/f
page
Formula
Figure 4-1 on
C
= T
+ 1½
C
Table 7-1
Tag
15)
= 8 µs and a data rate of f
T
T
Bit
Bit
Description
Read single 32 bit data block and CRC_u
(+ optional downlink CRC_d)
Read multiple data blocks and CRC_u
(+ optional downlink CRC_d)
Write a single block
(+ optional downlink CRC_d)
Login for write PWD protected access
Login for read PWD protected access
Starts a complete new anticollision loop
Anticollision loop with partial Tag ID, with
even number of matching Tag ID bits.
Anticollision loop with partial Tag ID, with odd
number of matching Tag ID bits.
Puts specified tag into Selected state
Selects all tags in the RF field
Select a specific group of tags
Select all tags which are NOT members of
the specified group
Reset selected tag to READY state without
reloading configuration register
Reset all tags in the RF field to READY state
and reload configuration register from system
memory (block #63)
Arms tag for ClearAll command
Clears memory except traceability data
(with optional constant CRC_d = 96ADh)
below
DDR = 1
DDR = 0
DDR = 1
DDR = 0
T
Bit
=f
C
0
C
/32; so a bit period
/32
116
116
84
50
84
4681C–RFID–09/05
Unit
T
T
T
T
T
T
C
C
C
C
C
C