ATA557001-DDW Atmel, ATA557001-DDW Datasheet - Page 19

• Manufacturer Part Number: ATA557001-DDW
• Description: IC IDIC RW RF 125KHZ 330BIT
• Manufacturer: Atmel

Specifications of ATA557001-DDW

• Function: Read/Write
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7.4
Figure 7-3.
7.5
4863A–RFID–07/05
Inverse Data Output
Fast Write
Data clock
Intern out
Data Encoder for Inverse Data Output
data
D
CLK
The ATA5570 supports in its extended mode (X-mode) an inverse data output option. If inverse
data is enabled, the modulator as shown in
This function is supported for all basic types of encoding.
R
In the optional fast-write mode the time between two gaps is nominally 12 field clocks for a “0”
and 27 field clocks for a “1”. When there is no gap for more than 32 field clocks after a previous
gap, the ATA5570 will exit the write mode. Please refer to
Table 7-2.
Sync
Parameters
Start gap
Write gap
Write data in normal mode
Write data in fast mode
S
R
< 100 k typical.
Sensor in
XOR
Inverse data output
Fast Write Decoding Schemes
XOR
Normal write mode
Fast write mode
Remark
“0” data
“1” data
“0” data
“1” data
–
Direct/NRZ
Manchester
Modulator
Bi-phase
Figure 7-3
PSK1
PSK2
PSK3
FSK1
FSK2
ATA5570 [Preliminary]
works on inverted data (see
Table 7-1
Table 7-2
Symbol
Wngap
Wfgap
Sgap
Mux
d0
d1
d0
d1
shows the modulation, when
and
Min
10
16
48
24
Figure 5-6 on page
8
8
8
Data output
Max
50
30
20
31
63
15
31
Table
Unit
FC
FC
FC
FC
FC
FC
FC
7-1).
12.
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