User's Manual

5-5 System Command
5-5
5-40
5-5-1 System Read (SR): ISO Mode only
This command read system information in the system area of the Tag.
<Command Format>
STX Node No..
Command
code
“SR”
Tag
type
System
method
“00
”
ET
X
BC
C
1 2 2 1 2 1 1
Tag type Specified a Tag type
A: I.CODE SLI chip
System method Specified the kind of system information.
“00” fixed.
<Response Format>
STX Node No..
Retry
flag
Command
code
“SR”
Response
code
“00”
Information
flag
UID(SNR) Information
field
ETX
BCC
1 2 1 2 2 2 16 2to10 1 1
Response code 00:normal completion
For other Response Codes, refer to SECTION 5-3-7 Response Code List.
Information flag Indicates information in the Information field with a flag.
Bit Information
０ DSFID
１ AFI
２ VICC memory size
３ IC reference information
４to７ For future use
* Information field is stored in order of bit when the bit above is 1.
* For the contents of information flag, refer to 2-4 Memory Map.
UID(SNR) Indicates UID (SNR) data having read from a Tag.
DSFID DSFID of a Tag
AFI AFI of a Tag
VICC
memory size
Defines the memory and block sizes of a Tag.
MSB LSB
15 13 12   8 7      0
Un-
assigned
Block size Block length
* Block length: the number of blocks of a Tag（00h to FFh＝1 to 256）
* Block size: the number of bytes per one block（00h to 1Fh＝1 to 32）
<As for I.CODE SLI chip: “1B03”>
Block length: “1B”＝28 blocks
Block size: “03”＝ 4 bytes
Information field
IC reference
information
IC reference Information of Tag
* IC reference Information is a form of data defined by IC manufacturer.
：This command is in ISO Mode Only. The command is not available for I.CODE1 mode.