SRTAG2K-D View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
SRTAG2K-D
STMicroelectronics
'SRTAG2K-D' PDF : 51 Pages View PDF
SRTAG2K-D
SRTAG2K-D memory management
File offset
0x0000
0x0004
...
...
...
0x00FF
Table 5. NDEF file layout
Byte 0
Byte 1
NDEF message length
User data
User data
...
...
...
...
...
...
...
...
Byte 2
User data
User data
...
...
...
...
Byte 3
User data
User data
...
...
...
User data
3.1.4
System file layout
The system file specifies the configuration of the SRTAG2K-D. Table 6 lists the different
fields.
Table 6. Field list
File offset
Field name
Number of
bytes
Read access Write access
Delivery
state (1)
0x0000
Length system file
2
0x0002
ST reserved
1
0x0003
ST reserved
1
0x0004
RF Session field
1
0x0005
ST reserved
1
RF
-
0x0012
RF
none
0x01
RF
none
0x00
RF
none
0x11
RF
none
0x00
0x0006
ST reserved
1
0x0007
NDEF File number
(RFU)
1
RF
none
0x01
RF
none
0x00
0x0008
0x000F
UID
Memory Size
7
RF
none
0x02D2 xx xx
xx xx xx (2)
2
RF
none
0x00FF
0x0011
Product Code
1
RF
none
0xD2
1. The delivery state for all passwords = 0x00000000000000000000000000000000.
2. x values are defined by ST to insure UID unicity.
3.2
Read and write access rights to the memory
An NDEF file can be locked for read or write accesses. It is also protected by a 128-bit
password that the host shall present before accessing the NDEF file. There are two 128-bit
passwords, one for the read access and the other one for the write access.
An NDEF file can be permanently locked for read or write accesses. Thus, the host cannot
access the NDEF file.
DocID025446 Rev 3
13/51
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