ATA555811-DDW Atmel, ATA555811-DDW Datasheet - Page 25

• 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

Figure 7-1.
4681C–RFID–09/05
Read
multiple
blocks
Read single
block
Write single
block
Select
SelectCRC
GetID
GetID
(Even partial TagID)
0
where n : even
Select All
SelectGroup
m+n: even
0
SelectNGroup
m+n: even
0
GetID
(Odd partial TagID)
0
where n : odd
Note:
Note:
Command Format
variable length mask positioning pattern
variable length mask positioning pattern
n
n
m+n
m+n
Length(TagID)
Length(TagID)-1
Length(TagID)
Length(TagID)
1. The leftmost position of the TagID select mask is determined by m '0' bits followed by a single '1' bit.
2. The TagID select mask is a variable (n) bits long. It starts immediately after the positioning pattern
These bit positions can be regarded as don't care bit positions.
and can be terminated as required with the end of the command. All TagID lsb bits not defined are don't care.
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
0 0
1 0
cmd
1 0
cmd
cmd
cmd
0 0
0 1
0 1
0 1
0 0
0 0
0 0
cmd
1 0
0 0
cmd
cmd
cmd
0 [(0)
0 0
0 0
X X
X X
X X
0 1
0 0
1
0 0
1 [(0)
(1)
(1)
start addr
m
TagID[msb],TagID[msb-1]...TagID[msb-(n-1)]
m
TagID[msb],TagID[msb-1]..TagID[msb-(n-1)]
addr
addr
X X
X X
X X
CRC(TagID)
1] TagID(msb-m) ... TagID(msb-m-n)
Command
1] TagID(msb-m) ... TagID(msb-m-n)
fn (addr)
TagID
variable length (n) TagID Select pattern
variable length (n) TagID Select pattern
X X
X X
X X
fn (start addr,end addr)
partial_TagID
partial_TagID
X X X X X X
0 L
CRC_d
lock
fn (addr,lock,data)
end addr
31............0
data bits
CRC_d
CRC_d
(2)
(2)
fn(addr,data,(CRC_d))
addr,(CRC_d),data
SOF
SOF
SOF
SOF
SOF
SOF
SOF
SOF
fn(start addr,end
ATA5558 [Preliminary]
OK Response
Anticollision
Anticollision
Anticollision
Response
Response
Response
Data
Data
CRC_u
fn (TagID)
CRC_u
CRC_u
SOF
SOF
SOF
SOF
SOF
SOF
Error Response
None
None
None
None
None
Error code
Error code
Error code
Error code
Error code
Error code
pattern
pattern
pattern
pattern
pattern
pattern
dual
dual
dual
dual
dual
dual
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