STMICROELECTRONICS LRIS2K_11

LRIS2K
2048-bit EEPROM tag IC at 13.56 MHz, with 64-bit UID and
Password, ISO15693 and ISO18000-3 Mode 1 compliant
Features
■
ISO 15693 standard fully compliant
■
ISO 18000-3 Mode 1 standard fully compliant
■
13.56 MHz ±7 kHz carrier frequency
■
To tag: 10% or 100% ASK modulation using
1/4 (26 Kbit/s) or 1/256 (1.6 Kbit/s) pulse
position coding
■
From tag: Load modulation using Manchester
coding with 423 kHz and 484 kHz subcarriers
in Low (6.6 Kbit/s) or High (26 Kbit/s) data rate
mode. Supports the 53 Kbit/s data rate with
Fast commands
■
Internal tuning capacitor 21 pF
■
1 000 000 Erase/Write cycles (minimum)
■
40 year data retention (minimum)
■
2048-bits EEPROM with Block Lock feature
■
64-bit unique identifier (UID)
■
Electrical article surveillance (EAS) capable
(software controlled)
■
Kill function
■
Multipassword protection
■
Read & Write (block of 32 bits)
■
5 ms programming time
September 2011
Doc ID 13888 Rev 9
Sawn Bumped Wafer
1/98
www.st.com
1
Contents
LRIS2K
Contents
1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.1
Memory mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.2
Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
1.3
Initial dialogue for vicinity cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.3.1
Power transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.3.2
Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.3.3
Operating field . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2
LRIS2K block security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3
Example of LRIS2K security protection . . . . . . . . . . . . . . . . . . . . . . . . 17
4
Communication signal from VCD to LRIS2K . . . . . . . . . . . . . . . . . . . . 18
5
Data rate and data coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6
7
5.1
Data coding mode: 1 out of 256 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5.2
Data coding mode: 1 out of 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.3
VCD to LRIS2K frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.4
Start of frame (SOF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Communications signal from LRIS2K to VCD . . . . . . . . . . . . . . . . . . . 25
6.1
Load modulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.2
Subcarrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.3
Data rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Bit representation and coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7.1
2/98
Bit coding using one subcarrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7.1.1
High data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7.1.2
Low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.2
Bit coding using two subcarriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.3
High data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.4
Low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Doc ID 13888 Rev 9
LRIS2K
8
Contents
LRIS2K to VCD frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.1
SOF when using one subcarrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.2
High data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.3
Low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8.4
SOF when using two subcarriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8.5
High data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8.6
Low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8.7
EOF when using one subcarrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.8
High data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.9
Low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.10
EOF when using two subcarriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8.11
High data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8.12
Low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9
Unique identifier (UID) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
10
Application family identifier (AFI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
11
Data storage format identifier (DSFID) . . . . . . . . . . . . . . . . . . . . . . . . . 36
11.1
CRC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
12
LRIS2K protocol description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
13
LRIS2K states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
14
15
13.1
Power-off state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
13.2
Ready state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
13.3
Quiet state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
13.4
Selected state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
14.1
Addressed mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
14.2
Non-addressed mode (general request) . . . . . . . . . . . . . . . . . . . . . . . . . 41
14.3
Select mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Doc ID 13888 Rev 9
3/98
Contents
LRIS2K
15.1
16
17
Request_flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Response format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
16.1
Response_flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
16.2
Response error code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Anticollision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
17.1
Request parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
18
Request processing by the LRIS2K . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
19
Explanation of the possible cases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
20
Inventory Initiated command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
21
Timing definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
21.1
t1: LRIS2K response delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
21.2
t2: VCD new request delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
21.3
t3: VCD new request delay in the absence of a response from
the LRIS2K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
22
Commands codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
23
Inventory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
24
Stay Quiet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
25
Read Single Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
26
Write Single Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
27
Lock Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
28
Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
29
Reset to Ready . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
30
Write AFI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
4/98
Doc ID 13888 Rev 9
LRIS2K
Contents
31
Lock AFI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
32
Write DSFID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
33
Lock DSFID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
34
Get System Info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
35
Get Multiple Block Security Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
36
Kill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
37
Write Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
38
Lock Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
39
Present Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
40
Fast Read Single Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
41
Fast Inventory Initiated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
42
Fast Initiate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
43
Inventory Initiated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
44
Initiate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
45
Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
46
DC and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
47
Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Appendix A Anticollision algorithm (Informative) . . . . . . . . . . . . . . . . . . . . . . . . 92
A.1
Algorithm for pulsed slots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Appendix B CRC (informative) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
B.1
CRC error detection method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Doc ID 13888 Rev 9
5/98
Contents
LRIS2K
B.2
CRC calculation example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Appendix C Application family identifier (AFI) (informative) . . . . . . . . . . . . . . . 95
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
6/98
Doc ID 13888 Rev 9
LRIS2K
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
Table 13.
Table 14.
Table 15.
Table 16.
Table 17.
Table 18.
Table 19.
Table 20.
Table 21.
Table 22.
Table 23.
Table 24.
Table 25.
Table 26.
Table 27.
Table 28.
Table 29.
Table 30.
Table 31.
Table 32.
Table 33.
Table 34.
Table 35.
Table 36.
Table 37.
Table 38.
Table 39.
Table 40.
Table 41.
Table 42.
Table 43.
Table 44.
Table 45.
Table 46.
Table 47.
Table 48.
Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Memory map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Memory blocks with protect status area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Protect status area organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Read / Write protection bit setting and block protection status . . . . . . . . . . . . . . . . . . . . . . 15
Password system area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
LRIS2K block security protection after power-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
LRIS2K block security protection after a valid presentation of password 1 . . . . . . . . . . . . 17
10% modulation parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Response data rates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
UID format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
CRC transmission rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
VCD request frame format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
LRIS2K response frame format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
LRIS2K response depending on Request_flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
General request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Definition of request_flags 1 to 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Request_flags 5 to 8 when Bit 3 = 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Request_flags 5 to 8 when Bit 3 = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
General response format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Definitions of response_flags 1 to 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Response error code definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Inventory request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Example of the addition of 0-bits to an 11-bit mask value . . . . . . . . . . . . . . . . . . . . . . . . . 46
Timing values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Command codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Inventory request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Inventory response format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Stay Quiet request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Read Single Block request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Read Single Block response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . 56
Block Locking status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Read Single Block response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . 56
Write Single Block request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Write Single Block response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . 58
Write Single Block response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . 58
Lock Single Block request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Lock Block response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Lock Block response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Select request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Select Block response format when Error_flag is NOT set. . . . . . . . . . . . . . . . . . . . . . . . . 62
Select response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Reset to Ready request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Reset to Ready response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . 63
Reset to Ready request format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Write AFI request format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Write AFI response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Write AFI response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Doc ID 13888 Rev 9
7/98
List of tables
Table 49.
Table 50.
Table 51.
Table 52.
Table 53.
Table 54.
Table 55.
Table 56.
Table 57.
Table 58.
Table 59.
Table 60.
Table 61.
Table 62.
Table 63.
Table 64.
Table 65.
Table 66.
Table 67.
Table 68.
Table 69.
Table 70.
Table 71.
Table 72.
Table 73.
Table 74.
Table 75.
Table 76.
Table 77.
Table 78.
Table 79.
Table 80.
Table 81.
Table 82.
Table 83.
Table 84.
Table 85.
Table 86.
Table 87.
Table 88.
Table 89.
Table 90.
Table 91.
Table 92.
Table 93.
Table 94.
Table 95.
Table 96.
Table 97.
8/98
LRIS2K
Lock AFI request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Lock AFI response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Lock AFI response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Write DSFID request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Write DSFID response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . . . 67
Write DSFID response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Lock DSFID request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Lock DSFID response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . . . . 69
Lock DSFID response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Get System Info request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Get System Info response format when Error_flag is NOT set. . . . . . . . . . . . . . . . . . . . . . 70
Get System Info response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Get Multiple Block Security Status request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Get Multiple Block Security Status response format when Error_flag is NOT set . . . . . . . 72
Block Locking status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Get Multiple Block Security Status response format when Error_flag is set . . . . . . . . . . . . 72
Kill request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Kill response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Kill response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Write Password request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Write Password response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . 76
Write Password response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Lock Password request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Protect status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Lock Password response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . . . 78
Lock Password response format when Error_flag is set. . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Present Password request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Present Password response format when Error_flag is NOT set . . . . . . . . . . . . . . . . . . . . 80
Present Password response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . . . . . 80
Fast Read Single Block request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Fast Read Single Block response format when Error_flag is NOT set . . . . . . . . . . . . . . . . 82
Block Locking status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Fast Read Single Block response format when Error_flag is set . . . . . . . . . . . . . . . . . . . . 82
Fast Inventory Initiated request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Fast Inventory Initiated response format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Fast Initiate request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Fast Initiate response format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Inventory Initiated request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Inventory Initiated response format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Initiate request format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Initiate Initiated response format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
DC characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
CRC definition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
AFI coding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Doc ID 13888 Rev 9
LRIS2K
List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Figure 17.
Figure 18.
Figure 19.
Figure 20.
Figure 21.
Figure 22.
Figure 23.
Figure 24.
Figure 25.
Figure 26.
Figure 27.
Figure 28.
Figure 29.
Figure 30.
Figure 31.
Figure 32.
Figure 33.
Figure 34.
Figure 35.
Figure 36.
Figure 37.
Figure 38.
Figure 39.
Figure 40.
Figure 41.
Figure 42.
Figure 43.
Figure 44.
Figure 45.
Figure 46.
Figure 47.
Figure 48.
Pad connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
100% modulation waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
10% modulation waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
1 out of 256 coding mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Detail of a time period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
1 out of 4 coding mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
1 out of 4 coding example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
SOF to select 1 out of 256 data coding mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
SOF to select 1 out of 4 data coding mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
EOF for either data coding mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Logic 0, high data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Logic 0, high data rate x2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Logic 1, high data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Logic 1, high data rate x2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Logic 0, low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Logic 0, low data rate x2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Logic 1, low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Logic 1, low data rate x2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Logic 0, high data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Logic 1, high data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Logic 0, low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Logic 1, low data rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Start of frame, high data rate, one subcarrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Start of frame, high data rate, one subcarrier x2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Start of frame, low data rate, one subcarrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Start of frame, low data rate, one subcarrier x2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Start of frame, high data rate, two subcarriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Start of frame, low data rate, two subcarriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
End of frame, high data rate, one subcarriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
End of frame, high data rate, one subcarriers x2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
End of frame, low data rate, one subcarriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
End of frame, low data rate, one subcarriers x2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
End of frame, high data rate, two subcarriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
End of frame, low data rate, two subcarriers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
LRIS2K decision tree for AFI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
LRIS2K protocol timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
LRIS2K state transition diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Principle of comparison between the mask, the slot number and the UID . . . . . . . . . . . . . 47
Description of a possible anticollision sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Stay Quiet frame exchange between VCD and LRIS2K. . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Read Single Block frame exchange between VCD and LRIS2K . . . . . . . . . . . . . . . . . . . . 57
Write Single Block frame exchange between VCD and LRIS2K . . . . . . . . . . . . . . . . . . . . 59
Lock Block frame exchange between VCD and LRIS2K . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Select frame exchange between VCD and LRIS2K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Reset to Ready frame exchange between VCD and LRIS2K. . . . . . . . . . . . . . . . . . . . . . . 63
Write AFI frame exchange between VCD and LRIS2K . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Lock AFI frame exchange between VCD and LRIS2K . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Write DSFID frame exchange between VCD and LRIS2K . . . . . . . . . . . . . . . . . . . . . . . . . 68
Doc ID 13888 Rev 9
9/98
List of figures
Figure 49.
Figure 50.
Figure 51.
Figure 52.
Figure 53.
Figure 54.
Figure 55.
Figure 56.
Figure 57.
Figure 58.
Figure 59.
10/98
LRIS2K
Lock DSFID frame exchange between VCD and LRIS2K . . . . . . . . . . . . . . . . . . . . . . . . . 69
Get System Info frame exchange between VCD and LRIS2K . . . . . . . . . . . . . . . . . . . . . . 71
Get Multiple Block Security Status frame exchange between VCD and LRIS2K . . . . . . . . 73
Kill frame exchange between VCD and LRIS2K. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Write Password frame exchange between VCD and LRIS2K . . . . . . . . . . . . . . . . . . . . . . 77
Lock Password frame exchange between VCD and LRIS2K . . . . . . . . . . . . . . . . . . . . . . . 79
Present Password frame exchange between VCD and LRIS2K . . . . . . . . . . . . . . . . . . . . 81
Fast Read Single Block frame exchange between VCD and LRIS2K . . . . . . . . . . . . . . . . 83
Fast Initiate frame exchange between VCD and LRIS2K . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Initiate frame exchange between VCD and LRIS2K . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
LRIS2K synchronous timing, transmit and receive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Doc ID 13888 Rev 9
LRIS2K
1
Description
Description
The LRIS2K is a contactless memory powered by the received carrier electromagnetic
wave, which follows the ISO 15693 recommendation for radio frequency power and signal
interface. It is a 2048-bit electrically erasable programmable memory (EEPROM). The
memory is organized as 64 blocks of 32 bits. The LRIS2K is accessed via the 13.56 MHz
carrier electromagnetic wave on which incoming data are demodulated from the received
signal amplitude modulation (ASK: amplitude shift keying). The received ASK wave is 10%
or 100% modulated with a data rate of 1.6 Kbit/s using the 1/256 pulse coding mode or a
Data rate of 26 Kbit/s using the 1/4 pulse coding mode.
Outgoing data are generated by the LRIS2K load variation using Manchester coding with
one or two subcarrier frequencies at 423 KHz and 484 kHz. Data are transferred from the
LRIS2K at 6.6 Kbit/s in low data rate mode and 26 Kbit/s high data rate mode. The LRIS2K
supports the 53 Kbit/s in high data rate mode in one subcarrier frequency at 423 kHz.
The LRIS2K also features a unique 32-bit multi-password protection scheme.
Figure 1.
Pad connections
LRIS2K
Power
Supply
Regulator
2048 bit
EEPROM
memory
AC1
ASK
Demodulator
Manchester
Load
Modulator
AC0
AI12853
Table 1.
Signal names
Signal name
Function
AC1
Antenna coil
AC0
Antenna coil
Doc ID 13888 Rev 9
11/98
Description
1.1
LRIS2K
Memory mapping
The LRIS2K is divided into 64 blocks of 32 bits as shown in Table 2. Each block can be
individually read- and/or write-protected using a specific lock or password command.
The user area consists of blocks that are always accessible. Read and Write operations are
possible if the addressed block is not protected. During a Write, the 32 bits of the block are
replaced by the new 32-bit value.
The LRIS2K also has a 64-bit block that is used to store the 64-bit unique identifier (UID).
The UID is compliant with the ISO 15963 description, and its value is used during the
anticollision sequence (Inventory). This block is not accessible by the user and its value is
written by ST on the production line.
The LRIS2K also includes an AFI register in which the application family identifier is stored,
and a DSFID register in which the data storage family identifier used in the anticollision
algorithm is stored. The LRIS2K has four additional 32-bit blocks in which the Kill code and
the password codes are stored.
Table 2.
Add
Memory map
0
7 8
15 16
23
31
Protect status
0
User area
5 bits
1
User area
5 bits
2
User area
5 bits
3
User area
5 bits
4
User area
5 bits
5
User area
5 bits
6
User area
5 bits
7
User area
5 bits
8
User area
5 bits
...
...
...
60
User area
5 bits
61
User area
5 bits
62
User area
5 bits
63
User area
5 bits
UID 0
UID 1
UID 2
UID 3
UID 4
UID 5
UID 6
UID 7
AFI
DSFID
(1)
Kill code
5 bits
1(1)
Password code 1
5 bits
2(1)
Password code 2
5 bits
3(1)
Password code 3
5 bits
0
1. RFU bit (b8) of Request_flag set to 1.
12/98
24
Doc ID 13888 Rev 9
LRIS2K
1.2
Description
Commands
The LRIS2K supports the following commands:
●
Inventory, used to perform the anticollision sequence.
●
Stay Quiet, used to put the LRIS2K in quiet mode, where it does not respond to any
inventory command.
●
Select, used to select the LRIS2K. After this command, the LRIS2K processes all
Read/Write commands with Select_flag set.
●
Reset To Ready, used to put the LRIS2K in the ready state.
●
Read Block, used to output the 32 bits of the selected block and its locking status.
●
Write Block, used to write the 32-bit value in the selected block, provided that it is not
locked.
●
Lock Block, used to lock the selected block. After this command, the block cannot be
modified.
●
Write AFI, used to write the 8-bit value in the AFI register.
●
Lock AFI, used to lock the AFI register.
●
Write DSFID, used to write the 8-bit value in the DSFID register.
●
Lock DSFID, used to lock the DSFID register.
●
Get System Info, used to provide the system information value
●
Get Multiple Block Security Status, used to send the security status of the selected
block.
●
Initiate, used to trigger the tag response to the Inventory Initiated sequence.
●
Inventory Initiated, used to perform the anticollision sequence triggered by the Initiate
command.
●
Kill, used to definitively deactivate the tag.
●
Write Password, used to write the 32 bits of the selected password.
●
Lock Password, used to write the Protect Status bits of the selected block.
●
Present Password, enables the user to present a password to unprotect the user
blocks linked to this password.
●
Fast Initiate, used to trigger the tag response to the Inventory Initiated sequence.
●
Fast Inventory Initiated, used to perform the anticollision sequence triggered by the
Initiate command.
●
Fast Read Single Block, used to output the 32 bits of the selected block and its
locking status.
Doc ID 13888 Rev 9
13/98
Description
1.3
LRIS2K
Initial dialogue for vicinity cards
The dialog between the vicinity coupling device (VCD) and the vicinity integrated circuit
Card or VICC (LRIS2K) takes place as follows:
●
activation of the LRIS2K by the RF operating field of the VCD.
●
transmission of a command by the VCD.
●
transmission of a response by the LRIS2K.
These operations use the RF power transfer and communication signal interface described
below (see Power transfer, Frequency and Operating field). This technique is called RTF
(Reader Talk First).
1.3.1
Power transfer
Power is transferred to the LRIS2K by radio frequency at 13.56 MHz via coupling antennas
in the LRIS2K and the VCD. The RF operating field of the VCD is transformed on the
LRIS2K antenna to an AC Voltage which is rectified, filtered and internally regulated. The
amplitude modulation (ASK) on this received signal is demodulated by the ASK
demodulator.
1.3.2
Frequency
The ISO 15693 standard defines the carrier frequency (fC) of the operating field as
13.56 MHz ±7 kHz.
1.3.3
Operating field
The LRIS2K operates continuously between Hmin and Hmax.
●
The minimum operating field is Hmin and has a value of 150 mA/m rms.
●
The maximum operating field is Hmax and has a value of 5 A/m rms.
A VCD shall generate a field of at least Hmin and not exceeding Hmax in the operating
volume.
14/98
Doc ID 13888 Rev 9
LRIS2K
LRIS2K block security
2
LRIS2K block security
The LRIS2K provides a special protection mechanism based on passwords. Each memory
block of the LRIS2K can be individually protected by one out of three available passwords,
and each block can also have Read/Write access conditions set.
Each memory block of the LRIS2K is assigned with a Protect Status area including a Block
Lock bit, two Password Control bits and two Read/Write protection bits as shown in Table 4.
Table 4 describes the organization of the Protect status area which can be read using the
Read Single Block command with the Option_flag set to ‘1’, and the Get Multiple Block
Security status command.
Table 3.
Add
Memory blocks with protect status area
0
7 8
15 16
23 24
31
Protect status
0
User area
5 bits
1
User area
5 bits
...
User area
5 bits
Table 4.
Protect status area organization
b7
b6
b5
0
0
0
b4
b3
b2
Password Control bits
b1
b0
Read / Write protection
Block Lock
bits
When the Block Lock bit is set to ‘1’, for instance by issuing a Block Lock command, the 2
Read/Write protection bits (b1, b2) are used to set the Read/Write access of the block as
described in Table 5.
The next 2 bits of the Protect Status area (b3, b4) are the Password Control bits. The value
of these two bits is used to link a password to the block as defined in Table 5.
Combinations not described in Table 5 are reserved.
Table 5.
Read / Write protection bit setting and block protection status
Block lock
function
Password
Control bits
Block access when
password presented
b0
b2, b1
b4, b3
0
00
00
1
11
01
READ
1
11
10
1
11
11
1
00
00
Not applicable
Block access when
password not presented
Block protection status
READ
WRITE
the block is not protected
NO WRITE
NO READ
NO WRITE
the block is protected by
password 1
READ
NO WRITE
NO READ
NO WRITE
the block is protected by
password 2
READ
NO WRITE
NO READ
NO WRITE
the block is protected by
password 3
READ
NO WRITE
the block is not protected
by a password
Not applicable
Doc ID 13888 Rev 9
15/98
LRIS2K block security
LRIS2K
The LRIS2K password protection is organized around a dedicated set of commands plus a
system area of four password blocks where the password values and the Kill code are
stored. Each password block also has a Protect Status area, making it possible to set the
Read / Write access right of each individual block. This system area is described in Table 6.
Table 6.
Add
Password system area
0
7 8
15 16
23 24
31
Protect status
0
Kill code
5 bits
1
Password 1
5 bits
2
Password 2
5 bits
3
Password 3
5 bits
The dedicated password commands are:
●
Write Password:
The Write Password command is used to write a 32-bit block into the password system
area. This command must be used to write or update password values and to set the
kill code. Depending on the Read/Write access set in the Protect Status area, it is
possible to modify a password value after issuing a valid Present Password command.
●
Lock Password:
The Lock Password command is used to set the Protect Status area of the selected
block. Bits b4 to b1 of the Protect Status are affected by the Lock Password command.
The Block Lock bit, b0, is set to ‘1’ automatically. After issuing a Lock Password
command, the protection settings of the selected block are activated. The protection of
a locked block cannot be changed. A Lock Password command sent to a locked block
returns an error code.
The Lock Password command is also used to set the Protect Status areas of the
password blocks. RFU bit 8 of the Request_flag is used to select either the memory
area (bit 8 = ‘0’) or the password area (bit 8 = ‘1’).
●
Present Password:
The Present Password command is used to present one of the three passwords to the
LRIS2K in order to modify the access rights of all the memory blocks linked to that
password (Table 5) including the password itself. If the presented password is correct,
the access rights remain activated until the tag is powered off or until a new Present
Password command is issued.
16/98
Doc ID 13888 Rev 9
LRIS2K
3
Example of LRIS2K security protection
Example of LRIS2K security protection
Table 7 and Table 8 show the block security protections before and after a valid Present
Password command. The Table 7 shows blocks access rights of an LRIS2K after power-up.
After a valid Present Password command with password 1, the memory block access is
changed as given in Table 8.
Table 7.
LRIS2K block security protection after power-up
Protect status
Add
0
7 8
15 16
23 24
31 b7b6b5
b4 b3 b2 b1 b0
0
Protection: Standard,
Read
- No Write
xxx
0
0
0
0
1
4
Protection: Pswd 1,
No Read
- No Write
xxx
0
1
1
1
1
Table 8.
LRIS2K block security protection after a valid presentation of password 1
Protect status
Add
0
7 8
15 16
23 24
31 b7b6b5
b4 b3 b2 b1 b0
0
Protection: Standard,
Read
- No Write
xxx
0
0
0
0
1
4
Protection: Pswd 1,
Read
- No Write
xxx
0
1
1
1
1
Doc ID 13888 Rev 9
17/98
Communication signal from VCD to LRIS2K
4
LRIS2K
Communication signal from VCD to LRIS2K
Communications between the VCD and the LRIS2K takes place using the modulation
principle of ASK (Amplitude Shift Keying). Two modulation indexes are used, 10% and
100%. The LRIS2K decodes both. The VCD determines which index is used.
The modulation index is defined as [a – b]/[a + b] where a is the peak signal amplitude and
b, the minimum signal amplitude of the carrier frequency.
Depending on the choice made by the VCD, a “pause” will be created as described in
Figure 2 and Figure 3.
The LRIS2K is operational for any degree of modulation index from between 10% and 30%.
Figure 2.
100% modulation waveform
a
105%
100%
95%
60%
5%
tRFF
tRFR
tRFSBL
t
AI06683
Table 9.
18/98
10% modulation parameters
Symbol
Parameter definition
Value
hr
0.1 x (a – b)
max
hf
0.1 x (a – b)
max
Doc ID 13888 Rev 9
LRIS2K
Communication signal from VCD to LRIS2K
Figure 3.
10% modulation waveform
hf
hr
tRFF
a
tRFSFL
tRFR
b
t
AI06655
Doc ID 13888 Rev 9
19/98
Data rate and data coding
5
LRIS2K
Data rate and data coding
The data coding implemented in the LRIS2K uses pulse position modulation. Both data
coding modes that are described in the ISO15693 are supported by the LRIS2K. The
selection is made by the VCD and indicated to the LRIS2K within the start of frame (SOF).
5.1
Data coding mode: 1 out of 256
The value of one single byte is represented by the position of one pause. The position of the
pause on 1 of 256 successive time periods of 18.88 µs (256/fC), determines the value of the
byte. In this case the transmission of one byte takes 4.833 ms and the resulting data rate is
1.65 kbits/s (fC/8192).
Figure 4 illustrates this pulse position modulation technique. In this figure, data E1h (225
decimal) is sent by the VCD to the LRIS2K.
The pause occurs during the second half of the position of the time period that determines
the value, as shown in Figure 5.
A pause during the first period transmits the data value 00h. A pause during the last period
transmit the data value FFh (255 decimal).
Figure 4.
1 out of 256 coding mode
9.44 µs
Pulse
Modulated
Carrier
18.88 µs
0 1
2
3
. . . . . . . .
. . . . . . . . .
. . . . . . . . .
2
2
5
. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
2
5
2
2
5
3
2
5
4
2
5
5
4.833 ms
AI06656
20/98
Doc ID 13888 Rev 9
LRIS2K
Data rate and data coding
Figure 5.
Detail of a time period
9.44 µs
18.88 µs
Pulse
Modulated
Carrier
.
.
.
.
.
.
.
.
2
2
4
2
2
5
.
.
.
.
.
2
2
6
Time Period
one of 256
Doc ID 13888 Rev 9
.
AI06657
21/98
Data rate and data coding
5.2
LRIS2K
Data coding mode: 1 out of 4
The value of 2 bits is represented by the position of one pause. The position of the pause on
1 of 4 successive time periods of 18.88 µs (256/fC), determines the value of the 2 bits. Four
successive pairs of bits form a byte, where the least significant pair of bits is transmitted first.
In this case the transmission of one byte takes 302.08 µs and the resulting data rate is 26.48
Kbits/s (fC/512). Figure 6 illustrates the 1 out of 4 pulse position technique and coding.
Figure 7 shows the transmission of E1h (225d - 1110 0001b) by the VCD.
Figure 6.
1 out of 4 coding mode
Pulse position for "00"
9.44 µs
9.44 µs
75.52 µs
Pulse position for "01" (1=LSB)
28.32 µs
9.44 µs
75.52 µs
Pulse position for "10" (0=LSB)
47.20µs
Pulse position for "11"
9.44 µs
75.52 µs
66.08 µs
9.44 µs
75.52 µs
AI06658
Figure 7.
1 out of 4 coding example
10
00
01
11
75.52µs
75.52µs
75.52µs
75.52µs
AI06659
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LRIS2K
5.3
Data rate and data coding
VCD to LRIS2K frames
Frames are delimited by a start of frame (SOF) and an end of frame (EOF). They are
implemented using code violation. Unused options are reserved for future use.
The LRIS2K is ready to receive a new command frame from the VCD 311.5 µs (t2) after
sending a response frame to the VCD.
The LRIS2K takes a power-up time of 0.1 ms after being activated by the powering field.
After this delay, the LRIS2K is ready to receive a command frame from the VCD.
5.4
Start of frame (SOF)
The SOF defines the data coding mode the VCD is to use for the following command frame.
The SOF sequence described in Figure 8 selects the 1 out of 256 data coding mode. The
SOF sequence described in Figure 9 selects the 1 out of 4 data coding mode. The EOF
sequence for either coding mode is described in Figure 10.
Figure 8.
SOF to select 1 out of 256 data coding mode
9.44µs
9.44µs
37.76µs
37.76µs
AI06661
Figure 9.
SOF to select 1 out of 4 data coding mode
9.44µs
9.44µs
37.76µs
9.44µs
37.76µs
AI06660
Doc ID 13888 Rev 9
23/98
Data rate and data coding
LRIS2K
Figure 10. EOF for either data coding mode
9.44µs
9.44µs
37.76µs
AI06662
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LRIS2K
6
Communications signal from LRIS2K to VCD
Communications signal from LRIS2K to VCD
The LRIS2K has several modes defined for some parameters, owing to which it can operate
in different noise environments and meet different application requirements.
6.1
Load modulation
The LRIS2K is capable of communication to the VCD via an inductive coupling area
whereby the carrier is loaded to generate a subcarrier with frequency fS. The subcarrier is
generated by switching a load in the LRIS2K.
The load-modulated amplitude received on the VCD antenna must be of at least 10mV
when measured as described in the test methods defined in International Standard
ISO10373-7.
6.2
Subcarrier
The LRIS2K supports the one-subcarrier and two-subcarrier response formats. These
formats are selected by the VCD using the first bit in the protocol header. When one
subcarrier is used, the frequency fS1 of the subcarrier load modulation is 423.75 kHz (fC/32).
When two subcarriers are used, the frequency fS1 is 423.75 kHz (fC/32), and frequency fS2
is 484.28 kHz (fC/28). When using the two-subcarrier mode, the LRIS2K generates a
continuous phase relationship between fS1 and fS2.
6.3
Data rates
The LRIS2K can respond using the low or the high data rate format. The selection of the
data rate is made by the VCD using the second bit in the protocol header. It also supports
the x2 mode available on all the Fast commands. Table 10 shows the different data rates
produced by the LRIS2K using the different response format combinations.
Table 10.
Response data rates
Data rate
One subcarrier
Two subcarriers
Standard commands
6.62 Kbits/s (fc/2048)
6.67 Kbits/s (fc/2032)
Fast commands
13.24 Kbits/s (fc/1024)
not applicable
Standard commands
26.48 Kbits/s (fc/512)
26.69 Kbits/s (fc/508)
Fast commands
52.97 Kbits/s (fc/256)
not applicable
Low
High
Doc ID 13888 Rev 9
25/98
Bit representation and coding
7
LRIS2K
Bit representation and coding
Data bits are encoded using Manchester coding, according to the following schemes. For
the low data rate, same subcarrier frequency or frequencies is/are used, in this case the
number of pulses is multiplied by 4 and all times will increase by this factor. For the Fast
commands using one subcarrier, all pulse numbers and times are divided by 2.
7.1
Bit coding using one subcarrier
7.1.1
High data rate
A logic 0 starts with 8 pulses at 423.75 kHz (fC/32) followed by an unmodulated time of
18.88 µs as shown in Figure 11.
Figure 11. Logic 0, high data rate
37.76µs
ai12076
For the fast commands, a logic 0 starts with 4 pulses at 423.75 kHz (fC/32) followed by an
unmodulated time of 9.44 µs as shown in Figure 12.
Figure 12. Logic 0, high data rate x2
18.88µs
ai12066
A logic 1 starts with an unmodulated time of 18.88 µs followed by 8 pulses at 423.75 kHz
(fC/32) as shown in Figure 13.
Figure 13. Logic 1, high data rate
37.76µs
ai12077
For the Fast commands, a logic 1 starts with an unmodulated time of 9.44 µs followed by 4
pulses of 423.75 kHz (fC/32) as shown in Figure 14.
Figure 14. Logic 1, high data rate x2
18.88µs
ai12067
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LRIS2K
7.1.2
Bit representation and coding
Low data rate
A logic 0 starts with 32 pulses at 423.75 kHz (fC/32) followed by an unmodulated time of
75.52 µs as shown in Figure 15.
Figure 15. Logic 0, low data rate
151.04µs
ai12068
For the Fast commands, a logic 0 starts with 16 pulses at 423.75 kHz (fC/32) followed by an
unmodulated time of 37.76 µs as shown in Figure 16.
Figure 16. Logic 0, low data rate x2
75.52µs
ai12069
A logic 1 starts with an unmodulated time of 75.52 µs followed by 32 pulses at 423.75 kHz
(fC/32) as shown in Figure 17.
Figure 17. Logic 1, low data rate
151.04µs
ai12070
For the Fast commands, a logic 1 starts with an unmodulated time of 37.76 µs followed by
16 pulses at 423.75 kHz (fC/32) as shown in Figure 17.
Figure 18. Logic 1, low data rate x2
75.52µs
Doc ID 13888 Rev 9
ai12071
27/98
Bit representation and coding
LRIS2K
7.2
Bit coding using two subcarriers
7.3
High data rate
A logic 0 starts with 8 pulses at 423.75 kHz (fC/32) followed by 9 pulses at 484.28 kHz
(fC/28) as shown in Figure 19. For the Fast commands, the x2 mode is not available.
Figure 19. Logic 0, high data rate
37.46µs
ai12074
A logic 1 starts with 9 pulses at 484.28 kHz (fC/28) followed by 8 pulses at 423.75 kHz
(fC/32) as shown in Figure 20. For the Fast commands, the x2 mode is not available.
Figure 20. Logic 1, high data rate
37.46µs
7.4
ai12073
Low data rate
A logic 0 starts with 32 pulses at 423.75 kHz (fC/32) followed by 36 pulses at 484.28 kHz
(fC/28) as shown in Figure 21. For the Fast commands, the x2 mode is not available.
Figure 21. Logic 0, low data rate
149.84µs
ai12072
A logic 1 starts with 36 pulses at 484.28 kHz (fC/28) followed by 32 pulses at 423.75 kHz
(fC/32) as shown in Figure 22. For the Fast commands, the x2 mode is not available.
Figure 22. Logic 1, low data rate
149.84µs
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Doc ID 13888 Rev 9
ai12075
LRIS2K
8
LRIS2K to VCD frames
LRIS2K to VCD frames
Frames are delimited by an SOF and an EOF. They are implemented using code violation.
Unused options are reserved for future use. For the low data rate, the same subcarrier
frequency or frequencies is/are used. In this case the number of pulses is multiplied by 4.
For the Fast commands using one subcarrier, all pulse numbers and times are divided by 2.
8.1
SOF when using one subcarrier
8.2
High data rate
The SOF includes an unmodulated time of 56.64 µs, followed by 24 pulses at 423.75 kHz
(fC/32), and a logic 1 that consists of an unmodulated time of 18.88 µs followed by 8 pulses
at 423.75 kHz as shown in Figure 23.
Figure 23. Start of frame, high data rate, one subcarrier
37.76µs
113.28µs
ai12078
For the Fast commands, the SOF comprises an unmodulated time of 28.32 µs, followed by
12 pulses at 423.75 kHz (fC/32), and a logic 1 that consists of an unmodulated time of
9.44µs followed by 4 pulses at 423.75 kHz as shown in Figure 24.
Figure 24. Start of frame, high data rate, one subcarrier x2
56.64µs
18.88µs
ai12079
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LRIS2K to VCD frames
8.3
LRIS2K
Low data rate
The SOF comprises an unmodulated time of 226.56 µs, followed by 96 pulses at 423.75 kHz
(fC/32), and a logic 1 that consists of an unmodulated time of 75.52 µs followed by 32 pulses
at 423.75 kHz as shown in Figure 25.
Figure 25. Start of frame, low data rate, one subcarrier
453.12µs
151.04µs
ai12080
For the Fast commands, the SOF comprises an unmodulated time of 113.28 µs, followed by
48 pulses at 423.75 kHz (fC/32), and a logic 1 that includes an unmodulated time of 37.76 µs
followed by 16 pulses at 423.75 kHz as shown in Figure 26.
Figure 26. Start of frame, low data rate, one subcarrier x2
226.56µs
75.52µs
ai12081
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LRIS2K
LRIS2K to VCD frames
8.4
SOF when using two subcarriers
8.5
High data rate
The SOF comprises 27 pulses at 484.28 kHz (fC/28), followed by 24 pulses at 423.75 kHz
(fC/32), and a logic 1 that includes 9 pulses at 484.28 kHz followed by 8 pulses at
423.75 kHz as shown in Figure 27.
For the Fast commands, the x2 mode is not available.
Figure 27. Start of frame, high data rate, two subcarriers
112.39µs
8.6
37.46µs
ai12082
Low data rate
The SOF comprises 108 pulses at 484.28 kHz (fC/28), followed by 96 pulses at 423.75 kHz
(fC/32), and a logic 1 that includes 36 pulses at 484.28 kHz followed by 32 pulses at
423.75 kHz as shown in Figure 28.
For the Fast commands, the x2 mode is not available.
Figure 28. Start of frame, low data rate, two subcarriers
449.56µs
149.84µs
ai12083
Doc ID 13888 Rev 9
31/98
LRIS2K to VCD frames
LRIS2K
8.7
EOF when using one subcarrier
8.8
High data rate
The EOF comprises a logic 0 that includes 8 pulses at 423.75 kHz and an unmodulated time
of 18.88 µs, followed by 24 pulses at 423.75 kHz (fC/32), and by an unmodulated time of
56.64 µs as shown in Figure 29.
Figure 29. End of frame, high data rate, one subcarriers
37.76µs
113.28µs
ai12084
For the Fast commands, the EOF comprises a logic 0 that includes 4 pulses at 423.75 kHz
and an unmodulated time of 9.44 µs, followed by 12 pulses at 423.75 kHz (fC/32) and an
unmodulated time of 37.76 µs as shown in Figure 30.
Figure 30. End of frame, high data rate, one subcarriers x2
18.88µs
56.64µs
ai12085
8.9
Low data rate
The EOF comprises a logic 0 that includes 32 pulses at 423.75 kHz and an unmodulated
time of 75.52 µs, followed by 96 pulses at 423.75 kHz (fC/32) and an unmodulated time of
226.56 µs as shown in Figure 31.
Figure 31. End of frame, low data rate, one subcarriers
453.12µs
151.04µs
ai12086
For the Fast commands, the EOF comprises a logic 0 that includes 16 pulses at 423.75 kHz
and an unmodulated time of 37.76 µs, followed by 48 pulses at 423.75 kHz (fC/32) and an
unmodulated time of 113.28 µs as shown in Figure 32.
Figure 32. End of frame, low data rate, one subcarriers x2
75.52µs
226.56µs
ai12087
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LRIS2K
LRIS2K to VCD frames
8.10
EOF when using two subcarriers
8.11
High data rate
The EOF comprises a logic 0 that includes 8 pulses at 423.75 kHz and 9 pulses at
484.28 kHz, followed by 24 pulses at 423.75 kHz (fC/32) and 27 pulses at 484.28 kHz
(fC/28) as shown in Figure 33.
For the Fast commands, the x2 mode is not available.
Figure 33. End of frame, high data rate, two subcarriers
37.46µs
8.12
112.39µs
ai12088
Low data rate
The EOF comprises a logic 0 that includes 32 pulses at 423.75 kHz and 36 pulses at
484.28 kHz, followed by 96 pulses at 423.75 kHz (fC/32) and 108 pulses at 484.28 kHz
(fC/28) as shown in Figure 34.
For the Fast commands, the x2 mode is not available.
Figure 34. End of frame, low data rate, two subcarriers
149.84µs
449.56µs
ai12089
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33/98
Unique identifier (UID)
9
LRIS2K
Unique identifier (UID)
The LRIS2Ks are uniquely identified by a 64-bit Unique Identifier (UID). This UID complies
with ISO/IEC 15963 and ISO/IEC 7816-6. The UID is a read-only code and comprises:
●
8 MSBs with a value of E0h
●
The IC Manufacturer code of ST 02h, on 8 bits (ISO/IEC 7816-6/AM1)
●
a Unique Serial Number on 48 bits
Table 11.
UID format
MSB
63
LSB
56 55
0xE0
48
47
0x02
0
Unique serial number
With the UID each LRIS2K can be addressed uniquely and individually during the
anticollision loop and for one-to-one exchanges between a VCD and an LRIS2K.
34/98
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LRIS2K
10
Application family identifier (AFI)
Application family identifier (AFI)
The AFI (application family identifier) represents the type of application targeted by the VCD
and is used to identify, among all the LRIS2Ks present, only the LRIS2Ks that meet the
required application criteria.
Figure 35. LRIS2K decision tree for AFI
Inventory Request
Received
No
AFI Flag
Set ?
Yes
AFI value
=0?
No
Yes
AFI value
= Internal
value ?
No
Yes
Answer given by the LRIS2K
to the Inventory Request
No Answer
AI13238
The AFI is programmed by the LRIS2K issuer (or purchaser) in the AFI register. Once
programmed and Locked, it can no longer be modified.
The most significant nibble of the AFI is used to code one specific or all application families.
The least significant nibble of the AFI is used to code one specific or all application
subfamilies. Subfamily codes different from 0 are proprietary.
(See ISO 15693-3 documentation)
Doc ID 13888 Rev 9
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Data storage format identifier (DSFID)
11
LRIS2K
Data storage format identifier (DSFID)
The data storage format identifier indicates how the data is structured in the LRIS2K
memory. The logical organization of data can be known instantly using the DSFID.
It can be programmed and locked using the Write DSFID and Lock DSFID commands.
11.1
CRC
The CRC used in the LRIS2K is calculated as per the definition in ISO/IEC 13239.
The initial register contents are all ones: FFFFh.
The two-byte CRC are appended to each request and response, within each frame, before
the EOF. The CRC is calculated on all the bytes after the SOF up to the CRC field.
Upon reception of a request from the VCD, the LRIS2K verifies that the CRC value is valid.
If it is invalid, the LRIS2K discards the frame and does not answer to the VCD.
Upon reception of a request from the LRIS2K, it is recommended that the VCD verifies
whether the CRC value is valid. If it is invalid, actions to be performed are left to the
discretion of the VCD designer.
The CRC is transmitted least significant byte first.
Each byte is transmitted least significant bit first.
Table 12.
CRC transmission rules
LSByte
LSBit
MSByte
MSBit
LSBit
CRC 16 (8 bits)
36/98
MSBit
CRC 16 (8 bits)
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LRIS2K
12
LRIS2K protocol description
LRIS2K protocol description
The Transmission protocol (or simply protocol) defines the mechanism used to exchange
instructions and data between the VCD and the LRIS2K, in both directions. It is based on
the concept of “VCD talks first”.
This means that an LRIS2K will not start transmitting unless it has received and properly
decoded an instruction sent by the VCD. The protocol is based on an exchange of:
●
a request from the VCD to the LRIS2K
●
a response from the LRIS2K to the VCD
Each request and each request are contained in a frame. The frame delimiters (SOF, EOF)
are described in Section 8: LRIS2K to VCD frames.
Each request consists of:
●
a request SOF (see Figure 8 and Figure 9)
●
flags
●
a command code
●
parameters, depending on the command
●
application data
●
a 2-byte CRC
●
a request EOF (see Figure 10)
Each request consists of:
●
an Answer SOF (see Figure 23 to Figure 28)
●
flags
●
parameters, depending on the command
●
application data
●
a 2-byte CRC
●
an Answer EOF (see Figure 29 to Figure 34)
The protocol is bit-oriented. The number of bits transmitted in a frame is a multiple of eight
(8), i.e. an integer number of bytes.
A single-byte field is transmitted least significant bit (LSBit) first. A multiple-byte field is
transmitted least significant byte (LSByte) first, each byte is transmitted least significant bit
(LSBit) first.
The setting of the flags indicates the presence of the optional fields. When the flag is set (to
one), the field is present. When the flag is reset (to zero), the field is absent.
Table 13.
VCD request frame format
Request SOF Request_flags
Table 14.
Response
SOF
Command
code
Parameters
Data
2-byte CRC
Request
EOF
LRIS2K response frame format
Response
_flags
Parameters
Doc ID 13888 Rev 9
Data
2-byte CRC
Response
EOF
37/98
LRIS2K protocol description
LRIS2K
Figure 36. LRIS2K protocol timing
VCD
Request
frame
(Table 13)
Request
frame
(Table 13)
Response
frame
(Table 14)
LRIS2K
Timing
38/98
t1
Response
frame
(Table 14)
t2
Doc ID 13888 Rev 9
t1
t2
LRIS2K
13
LRIS2K states
LRIS2K states
An LRIS2K can be in one of 4 states:
●
Power-off
●
Ready
●
Quiet
●
Selected
Transitions between these states are specified in Figure 37: LRIS2K state transition diagram
and Table 15: LRIS2K response depending on Request_flags.
13.1
Power-off state
The LRIS2K is in the Power-off state when it does not receive enough energy from the VCD.
13.2
Ready state
The LRIS2K is in the Ready state when it receives enough energy from the VCD. When in
the Ready state, the LRIS2K answers any request where the Select_flag is not set.
13.3
Quiet state
When in the Quiet state, the LRIS2K answers any request except for Inventory requests with
the Address_flag set.
13.4
Selected state
In the Selected state, the LRIS2K answers any request in all modes (see Section 14:
Modes):
●
request in Select mode with the Select_flag set
●
request in Addressed mode if the UID matches
●
request in Non-Addressed mode as it is the mode for general requests
Doc ID 13888 Rev 9
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LRIS2K states
LRIS2K
Table 15.
LRIS2K response depending on Request_flags
Address_flag
Flags
1
Addressed
0
Non addressed
LRIS2K in Ready or Selected state
(Devices in Quiet state do not
answer)
X
LRIS2K in Selected state
X
LRIS2K in Ready, Quiet or
Selected state (the device which
matches the UID)
X
Error (03h)
X
Select_flag
1
Selected
0
Non selected
X
X
X
X
Figure 37. LRIS2K state transition diagram
Power Off
In field
Out of field
Out of field
Any other Command
where Select_Flag
is not set
(U
iet
qu
ay
St
y
ad
re
o
tt
se
Re
e
er r
)
ID
wh o
y et D)
(U
ad s UI
ct
le
re is t
o ag en
Se
t t Fl er
se ct_ diff
Re ele ect(
S el
S
ID
)
Out of field
Ready
Select (UID)
Quiet
Stay quiet(UID)
Any other command where the
Address_Flag is set AND
where Inventory_Flag is not set
Selected
Any other command
AI06681
1. The intention of the state transition method is that only one LRIS2K should be in the selected state at a
time.
40/98
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LRIS2K
14
Modes
Modes
The term “mode” refers to the mechanism used in a request to specify the set of LRIS2Ks
that will answer the request.
14.1
Addressed mode
When the Address_flag is set to 1 (Addressed mode), the request contains the Unique ID
(UID) of the addressed LRIS2K.
Any LRIS2K that receives a request with the Address_flag set to 1 compares the received
Unique ID to its own. If it matches, then the LRIS2K executes the request (if possible) and
returns a request to the VCD as specified in the command description.
If the UID does not match, then it remains silent.
14.2
Non-addressed mode (general request)
When the Address_flag is cleared to 0 (Non-Addressed mode), the request does not contain
a Unique ID. Any LRIS2K receiving a request with the Address_flag cleared to 0 executes it
and returns a request to the VCD as specified in the command description.
14.3
Select mode
When the Select_flag is set to 1 (Select mode), the request does not contain an LRIS2K
Unique ID. The LRIS2K in the Selected state that receives a request with the Select_flag set
to 1 executes it and returns a request to the VCD as specified in the command description.
Only LRIS2Ks in the Selected state answer a request where the Select_flag set to 1.
The system design ensures in theory that only one LRIS2K can be in the Select state at a
time.
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Request format
15
LRIS2K
Request format
The request consists of:
●
an SOF
●
flags
●
a command code
●
parameters and data
●
a CRC
●
an EOF
Table 16.
S
O
F
15.1
General request format
Request_flags
Command code
Parameters
Data
CRC
E
O
F
Request_flags
In a request, the “flags” field specifies the actions to be performed by the LRIS2K and
whether corresponding fields are present or not.
The flag field consists of eight bits.
The bit 3 (Inventory_flag) of the request_flag defines the contents of the 4 MSBs (bits 5 to
8).
When bit 3 is reset (0), bits 5 to 8 define the LRIS2K selection criteria.
When bit 3 is set (1), bits 5 to 8 define the LRIS2K Inventory parameters.
Table 17.
Bit No
Bit 1
Bit 2
Bit 3
Bit 4
Definition of request_flags 1 to 4
Flag
Subcarrier_flag(1)
Data_rate_flag(2)
Level
Description
0
A single subcarrier frequency is used by the LRIS2K
1
Two subcarrier are used by the LRIS2K
0
Low data rate is used
1
High data rate is used
0
The meaning of flags 5 to 8 is described in Table 18
1
The meaning of flags 5 to 8 is described in Table 19
0
No Protocol format extension
Inventory_flag
Protocol Extension_flag
1. Subcarrier_flag refers to the LRIS2K-to-VCD communication.
2. Data_rate_flag refers to the LRIS2K-to-VCD communication
42/98
Doc ID 13888 Rev 9
LRIS2K
Request format
.
Table 18.
Bit No
Flag
Level
Select_flag(1)
Bit 5
Bit 6
Request_flags 5 to 8 when Bit 3 = 0
Description
0
Request is executed by any LRIS2K according to the setting of
Address_flag
1
Request is executed only by the LRIS2K in Selected state
0
Request is not addressed. UID field is not present. The request is
executed by all LRIS2Ks.
1
Request is addressed. UID field is present. The request is
executed only by the LRIS2K whose UID matches the UID
specified in the request.
Address_flag(1)
Bit 7
Option_flag
0
Bit 8
RFU
0
1. If the Select_flag is set to 1, the Address_flag is set to 0 and the UID field is not present in the request.
Table 19.
Bit No
Bit 5
Bit 6
Request_flags 5 to 8 when Bit 3 = 1
Flag
Level
Description
0
AFI field is not present
1
AFI field is present
0
16 slots
1
1 slot
AFI_flag
Nb_slots_flag
Bit 7
Option_flag
0
Bit 8
RFU
0
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Response format
16
LRIS2K
Response format
The request consists of:
●
an SOF
●
flags
●
parameters and data
●
a CRC
●
an EOF
Table 20.
S
O
F
16.1
General response format
Response_flags
Parameters
Data
CRC
Response_flags
In a request, the flags indicate how actions have been performed by the LRIS2K and
whether corresponding fields are present or not. The request_flags consist of eight bits.
Table 21.
Definitions of response_flags 1 to 8
Bit No
Bit 1
44/98
Flag
Level
Description
0
No error
1
Error detected. Error code is in the "Error" field.
Error_flag
Bit 2
RFU
0
Bit 3
RFU
0
Bit 4
Extension_flag
0
Bit 5
RFU
0
Bit 6
RFU
0
Bit 7
RFU
0
Bit 8
RFU
0
No extension
Doc ID 13888 Rev 9
E
O
F
LRIS2K
16.2
Response format
Response error code
If the Error_flag is set by the LRIS2K in the request, the Error code field is present and
provides information about the error that occurred.
Error codes not specified in Table 22 are reserved for future use.
Table 22.
Response error code definition
Error code
Meaning
03h
The option is not supported
0Fh
Error with no information given
10h
The specified block is not available
11h
The specified block is already locked and thus cannot be locked again
12h
The specified block is locked and its contents cannot be changed.
13h
The specified block was not successfully programmed
14h
The specified block was not successfully locked
Doc ID 13888 Rev 9
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Anticollision
17
LRIS2K
Anticollision
The purpose of the anticollision sequence is to inventory the LRIS2Ks present in the VCD
field using their unique ID (UID).
The VCD is the master of communications with one or several LRIS2Ks. It initiates LRIS2K
communication by issuing the Inventory request.
The LRIS2K sends its request in the determined slot or does not respond.
17.1
Request parameters
When issuing the Inventory command, the VCD:
●
sets the Nb_slots_flag as desired
●
adds the mask length and the mask value after the command field
●
The mask length is the number of significant bits of the mask value.
●
The mask value is contained in an integer number of bytes. The mask length indicates
the number of significant bits. LSB is transmitted first
●
If the mask length is not a multiple of 8 (bits), as many 0-bits as required will be added
to the mask value MSB so that the mask value is contained in an integer number of
bytes
●
The next field starts at the next byte boundary.
Table 23.
Inventory request format
MSB
SOF
LSB
Request_
flags
Command
Optional
AFI
Mask
length
Mask value
CRC
8 bits
8 bits
8 bits
8 bits
0 to 8 bytes
16 bits
EOF
In the example of the Table 24 and Figure 38, the mask length is 11 bits. Five 0-bits are
added to the mask value MSB. The 11-bit Mask and the current slot number are compared
to the UID.
Table 24.
46/98
Example of the addition of 0-bits to an 11-bit mask value
(b15) MSB
LSB (b0)
0000 0
100 1100 1111
0-bits added
11-bit mask value
Doc ID 13888 Rev 9
LRIS2K
Anticollision
Figure 38. Principle of comparison between the mask, the slot number and the UID
MSB
LSB
0000 0100 1100 1111 b 16 bits
Mask value received in the Inventory command
MSB
LSB
100 1100 1111 b 11 bits
The Mask value less the padding 0s is loaded
into the Tag comparator
MSB LSB
xxxx
The Slot counter is calculated
Nb_slots_flags = 0 (16 slots), Slot Counter is 4 bits
MSB
LSB
xxxx 100 1100 1111 b 15 bits
The Slot counter is concatened to the Mask value
Nb_slots_flags = 0
The concatenated result is compared with
the least significant bits of the Tag UID.
4 bits
UID
b63
b0
xxxx xxxx ..... xxxx xxxx x xxx xxxx xxxx xxxx b
Bits ignored
64 bits
Compare
AI06682
The AFI field is present if the AFI_flag is set.
The pulse is generated according to the definition of the EOF in ISO/IEC 15693-2.
The first slot starts immediately after the reception of the request EOF. To switch to the next
slot, the VCD sends an EOF.
The following rules and restrictions apply:
●
if no LRIS2K answer is detected, the VCD may switch to the next slot by sending an
EOF,
●
if one or more LRIS2K answers are detected, the VCD waits until the complete frame
has been received before sending an EOF for switching to the next slot.
Doc ID 13888 Rev 9
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Request processing by the LRIS2K
18
LRIS2K
Request processing by the LRIS2K
Upon reception of a valid request, the LRIS2K performs the following algorithm:
●
NbS is the total number of slots (1 or 16)
●
SN is the current slot number (0 to 15)
●
LSB (value, n) function returns the n Less Significant Bits of value
●
MSB (value, n) function returns the n Most Significant Bits of value
●
“&” is the concatenation operator
●
Slot_frame is either an SOF or an EOF
SN = 0
if (Nb_slots_flag)
then NbS = 1
SN_length = 0
endif
else NbS = 16
SN_length = 4
endif
label1:
if LSB(UID, SN_length + Mask_length) =
LSB(SN,SN_length)&LSB(Mask,Mask_length)
then answer to inventory request
endif
wait (Slot_frame)
if Slot_frame = SOF
then Stop Anticollision
decode/process request
exit
endif
if Slot_frame = EOF
if SN < NbS-1
then SN = SN + 1
goto label1
exit
endif
endif
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LRIS2K
19
Explanation of the possible cases
Explanation of the possible cases
Figure 39 summarizes the main possible cases that can occur during an anticollision
sequence when the slot number is 16.
The different steps are:
Note:
●
The VCD sends an Inventory request, in a frame terminated by an EOF. The number of
slots is 16.
●
LRIS2K 1 transmits its request in Slot 0. It is the only one to do so, therefore no collision
occurs and its UID is received and registered by the VCD;
●
The VCD sends an EOF in order to switch to the next slot.
●
In slot 1, two LRIS2Ks, LRIS2K 2 and LRIS2K 3 transmit a request, thus generating a
collision. The VCD records the event and remembers that a collision was detected in
Slot 1.
●
The VCD sends an EOF in order to switch to the next slot.
●
In Slot 2, no LRIS2K transmits a request. Therefore the VCD does not detect any
LRIS2K SOF and decides to switch to the next slot by sending an EOF.
●
In slot 3, there is another collision caused by requests from LRIS2K 4 and LRIS2K 5
●
The VCD then decides to send a request (for instance a Read Block) to LRIS2K 1
whose UID has already been correctly received.
●
All LRIS2Ks detect an SOF and exit the anticollision sequence. They process this
request and since the request is addressed to LRIS2K 1, only LRIS2K 1 transmits a
request.
●
All LRIS2Ks are ready to receive another request. If it is an Inventory command, the
slot numbering sequence restarts from 0.
The decision to interrupt the anticollision sequence is made by the VCD. It could have
continued to send EOFs until Slot 16 and only then sent the request to LRIS2K 1.
Doc ID 13888 Rev 9
49/98
50/98
Doc ID 13888 Rev 9
Time
Comment
Timing
LRIS2Ks
VCD
SOF
Inventory
EOF
Request
t1
No
collision
Response
1
Slot 0
t2
EOF
t1
Collision
Response
3
Response
2
Slot 1
t2
EOF
No
Response
t3
Slot 2
EOF
t1
Collision
Response
5
Response
4
Slot 3
t2
SOF
Request to
EOF
LRIS2K 1
t1
AI12885
Response
from
LRIS2K 1
Explanation of the possible cases
LRIS2K
Figure 39. Description of a possible anticollision sequence
LRIS2K
20
Inventory Initiated command
Inventory Initiated command
The LRIS2K provides a special feature to improve the inventory time response of moving
tags using the Initiate_flag value. This flag, controlled by the Initiate command, allows tags
to answer to Inventory Initiated commands.
For applications in which multiple tags are moving in front of a reader, it is possible to miss
tags using the standard inventory command. The reason is that the inventory sequence has
to be performed on a global tree search. For example, a tag with a particular UID value may
have to wait the run of a long tree search before being inventoried. If the delay is too long,
the tag may be out of the field before it has been detected.
Using the Initiate command, the inventory sequence is optimized. When multiple tags are
moving in front of a reader, the ones which are within the reader field will be initiated by the
Initiate command. In this case, a small batch of tags will answer to the Inventory Initiated
command which will optimize the time necessary to identify all the tags. When finished, the
reader has to issue a new Initiate command in order to initiate a new small batch of tags
which are new inside the reader field.
It is also possible to reduce the inventory sequence time using the Fast Initiate and Fast
Inventory Initiated commands. These commands allow the LRIS2Ks to increase their
response data rate by a factor of 2, up to 53kbit/s.
Doc ID 13888 Rev 9
51/98
Timing definition
LRIS2K
21
Timing definition
21.1
t1: LRIS2K response delay
Upon detection of the rising edge of the EOF received from the VCD, the LRIS2K waits for a
time t1nom before transmitting its response to a VCD request or before switching to the next
slot during an inventory process. Values of t1 are given in Table 25. The EOF is defined in
Figure 10 on page 24.
21.2
t2: VCD new request delay
t2 is the time after which the VCD may send an EOF to switch to the next slot when one or
more LRIS2K responses have been received during an Inventory command. It starts from
the reception of the EOF from the LRIS2Ks.
The EOF sent by the VCD may be either 10% or 100% modulated regardless of the
modulation index used for transmitting the VCD request to the LRIS2K.
t2 is also the time after which the VCD may send a new request to the LRIS2K as described
in Figure 36: LRIS2K protocol timing.
Values of t2 are given in Table 25.
21.3
t3: VCD new request delay in the absence of a response from
the LRIS2K
t3 is the time after which the VCD may send an EOF to switch to the next slot when no
LRIS2K response has been received.
The EOF sent by the VCD may be either 10% or 100% modulated regardless of the
modulation index used for transmitting the VCD request to the LRIS2K.
From the time the VCD has generated the rising edge of an EOF:
●
If this EOF is 100% modulated, the VCD waits a time at least equal to t3min before
sending a new EOF.
●
If this EOF is 10% modulated, the VCD waits a time at least equal to the sum of t3min +
the LRIS2K nominal response time (which depends on the LRIS2K data rate and
subcarrier modulation mode) before sending a new EOF.
Table 25.
Timing values(1)
Minimum (min) values
Nominal (nom) values
Maximum (max) values
t1
318.6 µs
320.9 µs
323.3 µs
t2
309.2 µs
No tnom
No tmax
No tnom
No tmax
t3
t1max
(2)
+
tSOF(3)
1. The tolerance of specific timings is ± 32/fC.
2. t1max does not apply for write alike requests. Timing conditions for write alike requests are defined in the
command description.
3. tSOF is the time taken by the LRIS2K to transmit an SOF to the VCD. tSOF depends on the current data
rate: High data rate or Low data rate.
52/98
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LRIS2K
22
Commands codes
Commands codes
The LRIS2K supports the commands described in this section. Their codes are given in
Table 26.
Table 26.
Command codes
Command code
standard
Function
Command code
custom
Function
01h
Inventory
A6h
Kill
02h
Stay Quiet
B1h
Write password
20h
Read Single Block
B2h
Lock Password
21h
Write Single Block
B3h
Present Password
22h
Lock Block
C0h
Fast Read Single Block
25h
Select
C1h
Fast Inventory Initiated
26h
Reset to Ready
C2h
Fast Initiate
27h
Write AFI
D1h
Inventory Initiated
28h
Lock AFI
D2h
Initiate
29h
Write DSFID
2Ah
Lock DSFID
2Bh
Get System Info
2Ch
Get Multiple Block Security
Status
Doc ID 13888 Rev 9
53/98
Inventory
23
LRIS2K
Inventory
When receiving the Inventory request, the LRIS2K runs the anticollision sequence. The
Inventory_flag is set to 1. The meaning of flags 5 to 8 is shown in Table 19: Request_flags 5
to 8 when Bit 3 = 1.
The request contains the:
●
flags
●
Inventory command code (see Table 26: Command codes)
●
AFI if the AFI flag is set
●
mask length
●
mask value
●
CRC
The LRIS2K does not generate any answer in case of error.
Table 27.
Inventory request format
Request
Request_flags Inventory
SOF
Optional
AFI
Mask
length
Mask
value
CRC16
8 bits
8 bits
8 bits
0 - 64 bits
16 bits
01h
Request
EOF
The response contains the:
●
flags
●
unique ID
Table 28.
Inventory response format
Response Response_
SOF
flags
8 bits
DSFID
UID
CRC16
8 bits
64 bits
16 bits
Response
EOF
During an Inventory process, if the VCD does not receive an RF LRIS2K response, it waits a
time t3 before sending an EOF to switch to the next slot. t3 starts from the rising edge of the
request EOF sent by the VCD.
●
If the VCD sends a 100% modulated EOF, the minimum value of t3 is:
t3min = 4384/fC (323.3µs) + tSOF
●
If the VCD sends a 10% modulated EOF, the minimum value of t3 is:
t3min = 4384/fC (323.3µs) + tNRT
where:
●
tSOF is the time required by the LRIS2K to transmit an SOF to the VCD
●
tNRT is the nominal response time of the LRIS2K
tNRT and tSOF are dependent on the LRIS2K-to-VCD data rate and subcarrier modulation
mode.
54/98
Doc ID 13888 Rev 9
LRIS2K
24
Stay Quiet
Stay Quiet
Command code = 0x02
On receiving the Stay Quiet command, the LRIS2K enters the Quiet state and does NOT
send back a request. There is NO response to the Stay Quiet command even if an error
occurs.
When in the Quiet state:
●
the LRIS2K does not process any request if the Inventory_flag is set,
●
the LRIS2K processes any Addressed request
The LRIS2K exits the Quiet state when:
●
it is reset (power off),
●
receiving a Select request. It then goes to the Selected state,
●
receiving a Reset to Ready request. It then goes to the Ready state.
Table 29.
Request
SOF
Stay Quiet request format
Request_flags
Stay Quiet
UID
CRC16
8 bits
02h
64 bits
16 bits
Request
EOF
The Stay Quiet command must always be executed in Addressed mode (Select_flag is reset
to 0 and Address_flag is set to 1).
Figure 40. Stay Quiet frame exchange between VCD and LRIS2K
VCD
SOF
Stay Quiet
request
EOF
LRIS2K
Timing
Doc ID 13888 Rev 9
55/98
Read Single Block
25
LRIS2K
Read Single Block
On receiving the Read Single Block command, the LRIS2K reads the requested block and
sends back its 32 bits value in the request. The Option_flag is supported and gives access
to the protect status.
Table 30.
Read Single Block request format
Request
SOF
Request_flags
Read Single
Block
UID
Block
number
CRC16
8 bits
20h
64 bits
8 bits
16 bits
Request
EOF
Request parameters:
●
Option_flag
●
UID (optional)
●
Block number
Table 31.
Read Single Block response format when Error_flag is NOT set
Response
SOF
Response_flags
Block locking
status
Data
CRC16
8 bits
8 bits
32 bits
16 bits
Response
EOF
Response parameters:
●
Block Locking Status if Option_flag is set (see Table 32: Block Locking status)
●
4 bytes of block data
Table 32.
b7
Block Locking status
b6
b5
Reserved for future
use. All at 0
Table 33.
b4
b3
password
control bits
b2
Read / Write
protection bits
0: Current Block not locked
1: Current Block locked
Response_
Flags
Error code
CRC16
8 bits
8 bits
16 bits
Response parameter:
56/98
b0
Read Single Block response format when Error_flag is set
Response
SOF
●
b1
Error code as Error_flag is set
–
0Fh: other error
–
10h: block address not available
Doc ID 13888 Rev 9
Response
EOF
LRIS2K
Read Single Block
Figure 41. Read Single Block frame exchange between VCD and LRIS2K
VCD
LRIS2K
SOF
Read Single Block
request
EOF
<-t1->
Doc ID 13888 Rev 9
SOF
Read Single Block
response
EOF
57/98
Write Single Block
26
LRIS2K
Write Single Block
On receiving the Write Single Block command, the LRIS2K writes the data contained in the
request to the requested block and reports whether the write operation was successful in
the request. The Option_flag is supported.
During the write cycle tW, there should be no modulation (neither 100% nor 10%).
Otherwise, the LRIS2K may not program correctly the data into the memory. The tW time is
equal to t1nom + 18 × 302 µs.
Table 34.
Write Single Block request format
Request Request_
SOF
flags
8 bits
Write
Single
Block
UID
Block
number
Data
CRC16
21h
64 bits
8 bits
32 bits
16 bits
Request
EOF
Request parameters:
●
UID (optional)
●
Block number
●
Data
Table 35.
Write Single Block response format when Error_flag is NOT set
Response SOF
Response_flags
CRC16
8 bits
16 bits
Response EOF
Response parameter:
●
No parameter. The response is send back after the writing cycle.
Table 36.
Write Single Block response format when Error_flag is set
Response
SOF
Response_
Flags
Error code
CRC16
8 bits
8 bits
16 bits
Response parameter:
●
58/98
Error code as Error_flag is set:
–
10h: block address not available
–
12h: block is locked
–
13h: block not programmed
Doc ID 13888 Rev 9
Response
EOF
LRIS2K
Write Single Block
Figure 42. Write Single Block frame exchange between VCD and LRIS2K
VCD
LRIS2K
LRIS2K
SOF
Write Single
Block request
EOF
<-t1-> SOF
Write Single Block
response
<------------ tW ------------><- t1 ->
Doc ID 13888 Rev 9
EOF
SOF
Write sequence when
error
Write Single
Block response
EOF
59/98
Lock Block
27
LRIS2K
Lock Block
On receiving the Lock Block command, the LRIS2K permanently locks the selected block.
During the write cycle tW, there should be no modulation (neither 100% nor 10%).
Otherwise, the LRIS2K may not lock correctly the memory block. The tW time is equal to
t1nom + 18 × 302µs.
Table 37.
Lock Single Block request format
Request Request_
SOF
flags
8 bits
Lock
Block
UID
Block
number
CRC16
22h
64 bits
8 bits
16 bits
Request
EOF
Request parameters:
●
(Optional) UID
●
Block number
Table 38.
Lock Block response format when Error_flag is NOT set
Response
SOF
Response_flags
CRC16
8 bits
16 bits
Response
EOF
Response parameter:
●
No parameter.
Table 39.
Lock Block response format when Error_flag is set
Response
SOF
Response_
Flags
Error code
CRC16
8 bits
8 bits
16 bits
Response parameter:
●
60/98
Error code as Error_flag is set:
–
10h: block address not available
–
11h: block is locked
–
14h: block not locked
Doc ID 13888 Rev 9
Response
EOF
LRIS2K
Lock Block
Figure 43. Lock Block frame exchange between VCD and LRIS2K
VCD
LRIS2K
LRIS2K
SOF
Lock Block
EOF
request
<-t1->
SOF
Lock Block
response
EOF
<------------ tW ------------><- t1 -> SOF
Doc ID 13888 Rev 9
Lock sequence when
error
Lock Block
response
EOF
61/98
Select
28
LRIS2K
Select
When receiving the Select command:
●
if the UID is equal to its own UID, the LRIS2K enters or stays in the Selected state and
sends a request.
●
if the UID does not match its own, the selected LRIS2K returns to the Ready state and
does not send a request.
The LRIS2K answers an error code only if the UID is equal to its own UID. If not, no
response is generated.
Table 40.
Select request format
Request Request_
SOF
flags
Select
UID
CRC16
25h
64 bits
16 bits
8 bits
Request
EOF
Request parameter:
●
UID
Table 41.
Select Block response format when Error_flag is NOT set
Response
SOF
Response_flags
CRC16
8 bits
16 bits
Response
EOF
Response parameter:
●
No parameter.
Table 42.
Select response format when Error_flag is set
Response
SOF
Response_
Flags
Error code
CRC16
8 bits
8 bits
16 bits
Response parameter:
●
Error code as Error_flag is set:
–
0Fh: other error
Figure 44. Select frame exchange between VCD and LRIS2K
VCD
LRIS2K
62/98
SOF
Select
request
EOF
<-t1-> SOF
Doc ID 13888 Rev 9
Select
response
EOF
Response
EOF
LRIS2K
29
Reset to Ready
Reset to Ready
On receiving a Reset to Ready command, the LRIS2K returns to the Ready state. In the
Addressed mode, the LRIS2K answers an error code only if the UID is equal to its own UID.
If not, no response is generated.
Table 43.
Reset to Ready request format
Request Request_ Reset to
SOF
flags
Ready
UID
CRC16
8 bits
64 bits
16 bits
26h
Request
EOF
Request parameter:
●
UID (Optional)
Table 44.
Reset to Ready response format when Error_flag is NOT set
Response
SOF
Response_flags
CRC16
8 bits
16 bits
Response
EOF
Response parameter:
●
No parameter
Table 45.
Reset to Ready request format when Error_flag is set
Response Response_
SOF
flags
8 bits
Error code
CRC16
8 bits
16 bits
Response
EOF
Response parameter:
●
Error code as Error_flag is set:
–
0Fh: other error
Figure 45. Reset to Ready frame exchange between VCD and LRIS2K
VCD
LRIS2K
SOF
Reset to
Ready
request
EOF
<-t1->
SOF
Doc ID 13888 Rev 9
Reset to
Ready
response
EOF
63/98
Write AFI
30
LRIS2K
Write AFI
On receiving the Write AFI request, the LRIS2K writes the AFI byte value into its memory.
During the write cycle tW, there should be no modulation (neither 100% nor 10%).
Otherwise, the LRIS2K may not write correctly the AFI value into the memory. The tW time is
equal to t1nom + 18 × 302 µs.
Table 46.
Write AFI request format
Request Request Write
SOF
_flags
AFI
8 bits
27h
UID
AFI
CRC16
64 bits
8 bits
16 bits
Request
EOF
Request parameters:
●
UID (Optional)
●
AFI
Table 47.
Write AFI response format when Error_flag is NOT set
Response
SOF
Response_flags
CRC16
8 bits
16 bits
Response
EOF
Response parameter:
●
No parameter.
Table 48.
Write AFI response format when Error_flag is set
Response
SOF
Response_
Flags
Error code
CRC16
8 bits
8 bits
16 bits
Response parameter:
●
64/98
Error code as Error_flag is set
–
12h: block is locked
–
13h: block not programmed
Doc ID 13888 Rev 9
Response
EOF
LRIS2K
Write AFI
Figure 46. Write AFI frame exchange between VCD and LRIS2K
VCD
SOF
Write AFI
request
EOF
Write AFI
response
LRIS2K
<-t1-> SOF
LRIS2K
<------------ tW ------------><- t1 -> SOF
Doc ID 13888 Rev 9
EOF
Write sequence
when error
Write AFI
response
EOF
65/98
Lock AFI
31
LRIS2K
Lock AFI
On receiving the Lock AFI request, the LRIS2K locks the AFI value permanently.
During the write cycle tW, there should be no modulation (neither 100% nor 10%).
Otherwise, the LRIS2K may not Lock correctly the AFI value in memory. The tW time is
equal to t1nom + 18 × 302 µs.
Table 49.
Lock AFI request format
Request Request_
SOF
flags
8 bits
Lock
AFI
UID
CRC16
28h
64 bits
16 bits
Request
EOF
Request parameter:
●
UID (optional)
Table 50.
Lock AFI response format when Error_flag is NOT set
Response
SOF
Response_flags
CRC16
8 bits
16 bits
Response
EOF
Response parameter:
●
No parameter
Table 51.
Lock AFI response format when Error_flag is set
Response
SOF
Response_
Flags
Error code
CRC16
8 bits
8 bits
16 bits
Response
EOF
Response parameter:
●
Error code as Error_flag is set
–
11h: block is locked
–
14h: block not locked
Figure 47. Lock AFI frame exchange between VCD and LRIS2K
VCD
66/98
SOF
Lock AFI
request
EOF
Lock AFI
response
LRIS2K
<-t1-> SOF
LRIS2K
<------------ tW ------------><- t1 -> SOF
Doc ID 13888 Rev 9
EOF
Lock sequence when
error
Lock AFI
response
EOF
LRIS2K
32
Write DSFID
Write DSFID
On receiving the Write DSFID request, the LRIS2K writes the DSFID byte value into its
memory.
During the write cycle tW, there should be no modulation (neither 100% nor 10%).
Otherwise, the LRIS2K may not write correctly the DSFID value in memory. The tW time is
equal to t1nom + 18 × 302 µs.
Table 52.
Write DSFID request format
Request Request_ Write
SOF
flags
DSFID
8 bits
29h
UID
DSFID
CRC16
64 bits
8 bits
16 bits
Request
EOF
Request parameters:
●
UID (optional)
●
DSFID
Table 53.
Write DSFID response format when Error_flag is NOT set
Response
SOF
Response_flags
CRC16
8 bits
16 bits
Response
EOF
Response parameter:
●
No parameter
Table 54.
Write DSFID response format when Error_flag is set
Response
Response_flags
SOF
Error code
CRC16
8 bits
16 bits
8 bits
Response
EOF
Response parameter:
●
Error code as Error_flag is set
–
12h: block is locked
–
13h: block not programmed
Doc ID 13888 Rev 9
67/98
Write DSFID
LRIS2K
Figure 48. Write DSFID frame exchange between VCD and LRIS2K
VCD
68/98
SOF
Write DSFID
EOF
request
Write DSFID
response
LRIS2K
<-t1-> SOF
LRIS2K
<------------ tW ------------><- t1 -> SOF
Doc ID 13888 Rev 9
EOF
Write sequence when
error
Write DSFID
EOF
response
LRIS2K
33
Lock DSFID
Lock DSFID
On receiving the Lock DSFID request, the LRIS2K locks the DSFID value permanently.
During the write cycle tW, there should be no modulation (neither 100% nor 10%).
Otherwise, the LRIS2K may not lock correctly the DSFID value in memory. The tW time is
equal to t1nom + 18 × 302 µs.
Table 55.
Lock DSFID request format
Request Request_
SOF
flags
Lock
DSFID
UID
CRC16
2Ah
64 bits
16 bits
8 bits
Request
EOF
Request parameter:
●
UID (optional)
Table 56.
Lock DSFID response format when Error_flag is NOT set
Response
SOF
Response_flags
CRC16
8 bits
16 bits
Response
EOF
Response parameter:
●
No parameter.
Table 57.
Lock DSFID response format when Error_flag is set
Response
Response_flags
SOF
Error code
CRC16
8 bits
16 bits
8 bits
Response
EOF
Response parameter:
●
Error code as Error_flag is set:
–
11h: block is locked
–
14h: block not locked
Figure 49. Lock DSFID frame exchange between VCD and LRIS2K
VCD
SOF
Lock DSFID
EOF
request
Lock DSFID
response
LRIS2K
<-t1-> SOF
LRIS2K
<------------ tW ------------><- t1 -> SOF
Doc ID 13888 Rev 9
EOF
Lock sequence
when error
Lock DSFID
EOF
response
69/98
Get System Info
34
LRIS2K
Get System Info
When receiving the Get System Info command, the LRIS2K sends back its information data
in the request.The Option_flag is supported and must be reset to 0. The Get System Info
can be issued in both Addressed and Non Addressed modes.
Table 58.
Get System Info request format
Request Request Get System
SOF
_flags
Info
8 bits
2Bh
UID
CRC16
64 bits
16 bits
Request
EOF
Request parameter:
●
UID (optional)
Table 59.
Get System Info response format when Error_flag is NOT set
Response Response Information
SOF
_flags
_flags
00h
0Fh
UID
64 bits
DSFID AFI
Memory
IC
Response
CRC16
Size reference
EOF
8 bits 8 bits 033Fh 001010xxb 16 bits
Response parameters:
●
Information flags set to 0Fh. DSFID, AFI, memory size and IC reference fields are
present
●
UID code on 64 bits
●
DSFID value
●
AFI value
●
Memory size. The LRIS2K provides 64 blocks (3Fh) of 4 byte (03h)
●
IC Reference. Only the 6 MSB are significant. The product code of the LRIS2K is
00 1010b=10d
Table 60.
Get System Info response format when Error_flag is set
Response SOF
Response_
flags
Error code
CRC16
01h
0Fh
16 bits
Response parameter:
●
70/98
Error code as Error_flag is set:
–
03h: Option not supported
–
0Fh: other error
Doc ID 13888 Rev 9
Response EOF
LRIS2K
Get System Info
Figure 50. Get System Info frame exchange between VCD and LRIS2K
VCD
LRIS2K
SOF
Get System Info
request
EOF
<-t1-> SOF Get System Info response
Doc ID 13888 Rev 9
EOF
71/98
Get Multiple Block Security Status
35
LRIS2K
Get Multiple Block Security Status
When receiving the Get Multiple Block Security Status command, the LRIS2K sends back
the block security status. The blocks are numbered from '00 to '3F' in the request and the
value is minus one (–1) in the field. For example, a value of '06' in the “Number of blocks”
field requests to return the security status of 7 blocks. In request, option flag must be set to
0.
Table 61.
Get Multiple Block Security Status request format
Get
Multiple
Request Request
Block
SOF
_flags
Security
Status
UID
8 bits
64 bits
2Ch
First Number
block
of
number blocks
8 bits
8 bits
CRC16
Request
EOF
16 bits
Request parameters:
●
UID (optional)
●
First block number
●
Number of blocks
NOT set
Table 62.
Response
SOF
Get Multiple Block Security Status response format when Error_flag is
NOT set
Response_
Flags
Block locking
status
CRC16
8 bits
8 bits(1)
16 bits
Response
EOF
1. Repeated as needed.
Response parameters:
●
Block Locking Status (see Table 63: Block Locking status)
●
N blocks of data
Table 63.
b7
Block Locking status
b6
b5
Reserved for future use. All
at 0
Table 64.
Response
SOF
72/98
b4
b3
password control
bits
b2
b1
b0
Read / Write
protection bits
0: Current Block not locked
1: Current Block locked
Get Multiple Block Security Status response format when Error_flag is
set
Response_
Flags
Error code
CRC16
8 bits
8 bits
16 bits
Doc ID 13888 Rev 9
Response
EOF
LRIS2K
Get Multiple Block Security Status
Response parameter:
●
Error code as Error_flag is set:
–
03h: Option not supported
–
0Fh: other error
Figure 51. Get Multiple Block Security Status frame exchange between VCD and
LRIS2K
VCD
LRIS2K
SOF
Get Multiple Block
Security Status
EOF
<-t1-> SOF
Doc ID 13888 Rev 9
Get Multiple Block
EOF
Security Status
73/98
Kill
36
LRIS2K
Kill
On receiving the Kill command, in the Addressed mode only, the LRIS2K compares the kill
code with the data contained in the request and reports whether the operation was
successful in the request. If the command is received in the Non Addressed or the Selected
mode, the LRIS2K returns an error response.
During the comparison cycle equal to tW, there should be no modulation (neither 100% nor
10%). Otherwise, the LRIS2K may not match the kill code correctly. The tW time is equal to
t1nom + 18 × 302 µs. After a successful Kill command, the LRIS2K is deactivated and does
not interpret any other command.
Table 65.
Kill request format
Request Request
SOF
_flags
8 bits
Kill
IC
MFG
Code
UID
Kill
access
Kill code
CRC16
A6h
0x02
64 bits
00h
32 bits
16bits
Request
EOF
Request parameters:
●
UID
●
Kill code
Table 66.
Kill response format when Error_flag is NOT set
Response
SOF
Response_flags
CRC16
8 bits
16 bits
Response
EOF
Response parameter:
●
No parameter. The response is send back after the writing cycle
Table 67.
Kill response format when Error_flag is set
Response
SOF
Response_
Flags
Error code
CRC16
8 bits
8 bits
16 bits
Response parameter:
●
74/98
Error code as Error_flag is set:
–
0Fh: other error
–
14h: LRIS2K not killed
Doc ID 13888 Rev 9
Response
EOF
LRIS2K
Kill
Figure 52. Kill frame exchange between VCD and LRIS2K
VCD
SOF Kill request EOF
LRIS2K
<-t1-> SOF
LRIS2K
<------------ tW ------------><- t1 -> SOF
Doc ID 13888 Rev 9
Kill response
EOF
Kill sequence when
error
Kill
response
EOF
75/98
Write Password
37
LRIS2K
Write Password
On receiving the Write Password command, the LRIS2K uses the data contained in the
request to write the password and reports whether the operation was successful in the
request. The Option_flag is supported.
During the write cycle time, tW, there must be no modulation at all (neither 100% nor 10%).
Otherwise, the LRIS2K may not correctly program the data into the memory. The tW time is
equal to t1nom + 18 × 302 µs. After a successful write, the selected password must be locked
again by issuing a Lock Password command to re-activate the block protection.
Prior to writing the password for a block, the Write Password command erases the Protect
Status area of the block.
Table 68.
Write Password request format
IC
Request Request Write
MFG
SOF
_flags Password
code
8 bits
B1h
02h
UID
Password
number
Data
CRC16
64 bits
8 bits
32 bits
16 bits
Request
EOF
Request parameters:
●
UID (optional)
●
Password number (00h = Kill, 01h = Pswd1, 02h = Pswd2, 03h = Pswd3, other = Error)
●
Data
Table 69.
Write Password response format when Error_flag is NOT set
Response
SOF
Response_flags
CRC16
8 bits
16 bits
Response
EOF
Response parameter:
●
32-bit password value. The response is sent back after the write cycle.
Table 70.
Write Password response format when Error_flag is set
Response
SOF
Response_
Flags
Error code
CRC16
8 bits
8 bits
16 bits
Response parameter:
●
76/98
Error code as Error_flag is set:
–
10h: block address not available
–
12h: block is locked
–
13h: block not programmed
Doc ID 13888 Rev 9
Response
EOF
LRIS2K
Write Password
Figure 53. Write Password frame exchange between VCD and LRIS2K
VCD
SOF
Write
Password
request
EOF
Write Password
response
LRIS2K
<-t1-> SOF
LRIS2K
<------------ tW ------------><- t1 -> SOF
Doc ID 13888 Rev 9
EOF
Write sequence when
error
Write
Password
response
EOF
77/98
Lock Password
38
LRIS2K
Lock Password
On receiving the Lock Password command, the LRIS2K sets the access rights and
permanently locks the selected block. The Option_flag is supported.
RFU bit 8 of the request_flag is used to select either the memory area (bit 8 = ‘0’) or the
password area (bit 8 = ‘1’).
During the write cycle tW, there should be no modulation (neither 100% nor 10%) otherwise,
the LRIS2K may not correctly lock the memory block.
The tW time is equal to t1nom + 18 × 302 µs.
Table 71.
Lock Password request format
Request Request
Lock
SOF
_flags Password
8 bits
B2h
IC
MFG
code
UID
02h
64 bits
Block Protect
Request
CRC16
number Status
EOF
8 bits
8 bits
16 bits
Request parameters:
●
(Optional) UID
●
Block number (bit 8 = ‘1’: 00h = Kill, 01h = Pswd1, 02h = Pswd2, 03h = Pswd3, other =
Error)
●
Protect status (refer to Table 72)
Table 72.
Protect status
b7
b6
b5
0
0
0
b4
b3
password control bits
b2
b1
Read / Write protection
bits(1)
b0
1
1. b1b2 is 00 or 11. Other combinations are reserved but will behave as 11 in terms of protection settings.
Table 73.
Response
SOF
Lock Password response format when Error_flag is NOT set
Response_flags
CRC16
8 bits
16 bits
Response
EOF
Response parameter:
●
No parameter.
Table 74.
Response
SOF
78/98
Lock Password response format when Error_flag is set
Response_
Flags
Error code
CRC16
8 bits
8 bits
16 bits
Doc ID 13888 Rev 9
Response
EOF
LRIS2K
Lock Password
Response parameter:
●
Error code as Error_flag is set:
–
10h: block address not available
–
11h: block is locked
–
14: block not locked
Figure 54. Lock Password frame exchange between VCD and LRIS2K
VCD
SOF
Lock
Password
request
EOF
Lock Password
response
LRIS2K
<-t1-> SOF
LRIS2K
<------------ tW ------------><- t1 -> SOF
Doc ID 13888 Rev 9
EOF
Lock sequence when
error
Lock
Password
response
EOF
79/98
Present Password
39
LRIS2K
Present Password
On receiving the Present Password command, the LRIS2K compares the requested
password with the data contained in the request and reports whether the operation has
been successful in the request. The Option_flag is supported.
During the comparison cycle equal to tW, there should be no modulation (neither 100% nor
10%) otherwise, the LRIS2K the Password value may not be correctly compared.
The tW time is equal to t1nom + 18 × 302 µs.
After a successful command, the access to all the memory blocks linked to the password is
changed as described in Section 2: LRIS2K block security.
Table 75.
Present Password request format
IC
Request Request Present
MFG
SOF
_flags Password
code
8 bits
B3h
02h
UID
Password
number
Data
CRC16
64 bits
8 bits
32 bits
16 bits
Request
EOF
Request parameters:
●
UID (optional)
●
Password number (0x01 = Pswd1, 0x02 = Pswd2, 0x03 = Pswd3, other = Error)
●
Data
Table 76.
Present Password response format when Error_flag is NOT set
Response
SOF
Response_flags
CRC16
8 bits
16 bits
Response
EOF
Response parameter:
●
No parameter. The response is send back after the writing cycle
Table 77.
Present Password response format when Error_flag is set
Response
SOF
Response_
Flags
Error code
CRC16
8 bits
8 bits
16 bits
Response parameter:
●
Error code as Error_flag is set:
–
80/98
0Fh: other error
Doc ID 13888 Rev 9
Response
EOF
LRIS2K
Present Password
Figure 55. Present Password frame exchange between VCD and LRIS2K
VCD
SOF
Present
Password
request
EOF
Present
Password
response
LRIS2K
<-t1-> SOF
LRIS2K
<------------ tW ------------><- t1 -> SOF
Doc ID 13888 Rev 9
EOF
sequence when error
Present
Password
response
EOF
81/98
Fast Read Single Block
40
LRIS2K
Fast Read Single Block
On receiving the Fast Read Single Block command, the LRIS2K reads the requested block
and sends back its 32-bit value in the request. The Option_flag is supported. The data rate
of the response is multiplied by 2.
Table 78.
Fast Read Single Block request format
Request Request_
SOF
flags
Fast Read
Single
Block
IC
MFG
code
UID
Block
number
CRC16
C0h
02h
64 bits
8 bits
16 bits
8 bits
Request
EOF
Request parameters:
●
Option_flag
●
UID (optional)
●
Block number
Table 79.
Fast Read Single Block response format when Error_flag is NOT set
Response Response
SOF
_flags
Block
Locking
Status
Data
CRC16
8 bits
32 bits
16 bits
8 bits
Response
EOF
Response parameters:
●
Block Locking Status if Option_flag is set (see Table 80)
●
4 bytes of block data
Table 80.
Block Locking status
b7
b6
b5
Reserved for future used. All
at 0
Table 81.
b4
b3
password control
bits
b2
Read / Write
protection bits
0: Current Block not locked
1: Current Block locked
Response_
Flags
Error code
CRC16
8 bits
8 bits
16 bits
Response parameter:
82/98
b0
Fast Read Single Block response format when Error_flag is set
Response
SOF
●
b1
Error code as Error_flag is set:
–
0Fh: other error
–
10h: block address not available
Doc ID 13888 Rev 9
Response
EOF
LRIS2K
Fast Read Single Block
Figure 56. Fast Read Single Block frame exchange between VCD and LRIS2K
VCD
LRIS2K
SOF
Fast Read Single
Block request
EOF
<-t1-> SOF
Doc ID 13888 Rev 9
Fast Read Single
Block response
EOF
83/98
Fast Inventory Initiated
41
LRIS2K
Fast Inventory Initiated
Before receiving the Fast Inventory Initiated command, the LRIS2K must have received an
Initiate or a Fast Initiate command in order to set the Initiate_ flag. If not, the LRIS2K does
not answer to the Fast Inventory Initiated command.
On receiving the Fast Inventory Initiated request, the LRIS2K runs the anticollision
sequence. The Inventory_flag must be set to 1. The meaning of flags 5 to 8 is shown in
Table 19: Request_flags 5 to 8 when Bit 3 = 1. The data rate of the response is multiplied by
2.
The request contains the:
●
flags
●
Inventory command code
●
AFI option not supported, AFI_flag must be set to 0
●
mask length
●
mask value
●
CRC
The LRIS2K does not generate any answer in case of error.
Table 82.
Fast Inventory Initiated request format
Request Request
SOF
Flags
Fast Inventory
Initiated
8 bits
C1h
IC MFG Optional Mask
Request
Mask value CRC16
code
AFI
length
EOF
02h
8 bits
8 bits
0 - 64 bits
16 bits
The response contains:
●
the flags
●
the Unique ID
Table 83.
Fast Inventory Initiated response format
Response SOF
Response_flags
DSFID
UID
CRC16
8 bits
00h
64 bits
16 bits
Response EOF
During an Inventory process, if the VCD does not receive an RF LRIS2K response, it waits a
time t3 before sending an EOF to switch to the next slot. t3 starts from the rising edge of the
request EOF sent by the VCD.
●
If the VCD sends a 100% modulated EOF, the minimum value of t3 is:
t3min = 4384/fC (323.3µs) + tSOF
●
If the VCD sends a 10% modulated EOF, the minimum value of t3 is:
t3min = 4384/fC (323.3µs) + tNRT
where:
●
tSOF is the time required by the LRIS2K to transmit an SOF to the VCD
●
tNRT is the nominal response time of the LRIS2K
tNRT and tSOF are dependent on the LRIS2K-to-VCD data rate and subcarrier modulation
mode.
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LRIS2K
42
Fast Initiate
Fast Initiate
On receiving the Fast Initiate command, the LRIS2K sets the internal Initiate_flag and sends
back a request. The command has to be issued in the Non Addressed mode only
(Select_flag is reset to 0 and Address_flag is reset to 0). If an error occurs, the LRIS2K does
not generate any answer. The Initiate_flag is reset after a power off of the LRIS2K. The data
rate of the response is multiplied by 2.
The request contains:
●
No data
Table 84.
Request
SOF
Fast Initiate request format
Request_flags
Fast
Initiate
IC MFG
code
CRC16
8 bits
C2h
02h
16 bits
Request
EOF
The response contains:
●
the flags
●
the Unique ID
Table 85.
Fast Initiate response format
Response Response
DSFID
SOF
_flags
8 bits
00h
UID
CRC16
64 bits
16 bits
Response
EOF
Figure 57. Fast Initiate frame exchange between VCD and LRIS2K
VCD
LRIS2K
SOF
Fast Initiate request
EOF
<-t1-> SOF Fast Initiate response EOF
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Inventory Initiated
43
LRIS2K
Inventory Initiated
Before receiving the Inventory Initiated command, the LRIS2K must have received an
Initiate or a Fast Initiate command in order to set the Initiate_ flag. If not, the LRIS2K does
not answer to the Inventory Initiated command.
On receiving the Inventory Initiated request, the LRIS2K runs the anticollision sequence.
The Inventory_flag must be set to 1. The meaning of flags 5 to 8 is given in Table 19:
Request_flags 5 to 8 when Bit 3 = 1.
The request contains the:
●
flags
●
Inventory command code
●
AFI option not supported, AFI_flag must be set to 0
●
mask length
●
mask value
●
CRC
The LRIS2K does not generate any answer in case of error.
Table 86.
Inventory Initiated request format
Request Request Inventory
SOF
_flags
Initiated
IC MFG
code
8 bits
02h
D1h
Optional Mask
AFI
length
8 bits
8 bits
Mask value
CRC16
0 - 64 bits
16 bits
Request
EOF
The response contains the:
●
flags
●
unique ID
Table 87.
Inventory Initiated response format
Response SOF Response_flags
8 bits
DSFID
UID
CRC16
0x00
64 bits
16 bits
Response EOF
During an Inventory process, if the VCD does not receive an RF LRIS2K response, it waits a
time t3 before sending an EOF to switch to the next slot. t3 starts from the rising edge of the
request EOF sent by the VCD.
●
If the VCD sends a 100% modulated EOF, the minimum value of t3 is:
t3min = 4384/fC (323.3µs) + tSOF
●
If the VCD sends a 10% modulated EOF, the minimum value of t3 is:
t3min = 4384/fC (323.3µs) + tNRT
where:
●
tSOF is the time required by the LRIS2K to transmit an SOF to the VCD
●
tNRT is the nominal response time of the LRIS2K
tNRT and tSOF are dependent on the LRIS2K-to-VCD data rate and subcarrier modulation
mode.
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44
Initiate
Initiate
On receiving the Initiate command, the LRIS2K sets the internal Initiate_flag and sends
back a request. The command has to be issued in the Non Addressed mode only
(Select_flag is reset to 0 and Address_flag is reset to 0). If an error occurs, the LRIS2K does
not generate any answer. The Initiate_flag is reset after a power off of the LRIS2K.
The request contains:
●
No data
Table 88.
Initiate request format
Request
Request_flags
SOF
Initiate
IC MFG
code
CRC16
D2h
02h
16 bits
8 bits
Request
EOF
The response contains the:
●
flags
●
unique ID
Table 89.
Initiate Initiated response format
Response Response
SOF
_flags
8 bits
DSFID
UID
CRC16
00h
64 bits
16 bits
Response
EOF
Figure 58. Initiate frame exchange between VCD and LRIS2K
VCD
LRIS2K
SOF
Initiate
request
EOF
<-t1-> SOF
Doc ID 13888 Rev 9
Initiate
response
EOF
87/98
Maximum rating
45
LRIS2K
Maximum rating
Stressing the device above the rating listed in the absolute maximum ratings table may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in the operating sections of
this specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability. Refer also to the STMicroelectronics SURE
Program and other relevant quality documents.
Table 90.
Absolute maximum ratings
Symbol
Parameter
TSTG
Storage conditions
tSTG
Storage time
ICC
Supply current on AC0 / AC1
VMAX
VESD
Wafer (kept in its
antistatic bag)
Input voltage on AC0 / AC1
Electrostatic discharge voltage(1)
Min.
Max.
Unit
15
25
°C
23
months
–20
20
mA
–7
7
V
(HBM)(2)
–1000
1000
V
UFDFPN8 (MM)(3)
–100
100
V
UFDFPN8
1. AEC-Q100-002 (compliant with JEDEC Std JESD22-A114A, C1=100 pF, R1=1500 Ohm, R2=500 Ohm)
2. Human body model.
3. Machine model.
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LRIS2K
46
DC and AC parameters
DC and AC parameters
This section summarizes the operating and measurement conditions, and the DC and AC
characteristics of the device. The parameters in the DC and AC characteristic tables that
follow are derived from tests performed under the measurement conditions summarized in
the relevant tables. Designers should check that the operating conditions in their circuit
match the measurement conditions when relying on the quoted parameters.
Table 91.
AC characteristics(1) (2)
Symbol
fCC
Parameter
External RF signal frequency
MICARRIER 10% carrier modulation index
tRFR, tRFF
tRFSBL
tRFSBL
tJIT
Min
Typ
Max
Unit
13.553 13.56 13.567 MHz
10
30
%
10% rise and fall time
0.5
3.0
µs
10% minimum pulse width for bit
7.1
9.44
µs
95
100
%
100% rise and fall time
0.5
3.5
µs
100% minimum pulse width for bit
7.1
9.44
µs
Bit pulse jitter
-2
+2
µs
1
ms
MICARRIER 100% carrier modulation index
tRFR, tRFF
Condition
MI=(A-B)/(A+B)
MI=(A-B)/(A+B)
tMIN CD
Minimum time from carrier
generation to first data
From H-field min
0.1
fSH
Subcarrier frequency high
FCC/32
423.75
KHz
fSL
Subcarrier frequency low
FCC/28
484.28
KHz
t1
Time for LRIS2K response
4224/FS
318.6
320.9
323.3
µs
t2
Time between commands
4224/FS
309
311.5
314
µs
tW
Programming time (including
internal verify time)
5.8
ms
1. TA = –20 to 85 °C.
2. All timing measurements were performed on a reference antenna with the following characteristics:
External size: 75 mm x 48 mm
Number of turns: 6
Width of conductor: 1 mm
Space between 2 conductors: 0.4 mm
Value of the tuning capacitor: 21 pF (LRIS2K-SBN18)
Value of the coil: 4.3 µH
Tuning frequency: 13.8 MHz.
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DC and AC parameters
LRIS2K
Table 92.
DC characteristics(1)
Symbol
Parameter
Test conditions
VCC
Regulated voltage
VRET
Retromodulated induced
voltage
ICC
Typ.
1.5
ISO10373-7
Max.
Unit
3.0
V
10
mV
Read
VCC = 3.0 V
50
µA
Write
VCC = 3.0 V
150
µA
Supply current
CTUN
Min.
f = 13.56 MHz for
SBN18/1
Internal tuning capacitor
21
pF
1. TA = –20 to 85 °C.
Table 93.
Operating conditions
Symbol
Parameter
Min.
Max.
Unit
TA
Ambient operating temperature
–20
85
°C
Figure 59 shows an ASK modulated signal, from the VCD to the LRIS2K. The test condition
for the AC/DC parameters are:
●
Close coupling condition with tester antenna (1mm)
●
LRIS2K performance measured at the tag antenna
Figure 59. LRIS2K synchronous timing, transmit and receive
A
B
tRFF
tRFR
fCC
tRFSBL
tMAX
tMIN CD
AI06680
90/98
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LRIS2K
47
Part numbering
Part numbering
Table 94.
Ordering information scheme
Example:
LRIS2K
-
SBN18/ 1
GE
Device type
LRIS2K
Package
SBN18 = 180 µm ± 15 µm bumped and sawn wafer on 8-inch frame
Tuning capacitance
1 = 21 pF
Customer code given by ST
GE
For further information on any aspect of this device, please contact your nearest ST sales
office.
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Anticollision algorithm (Informative)
Appendix A
LRIS2K
Anticollision algorithm (Informative)
The following pseudocode describes how anticollision could be implemented on the VCD,
using recursivity.
A.1
Algorithm for pulsed slots
function
function
function
function
push (mask, address); pushes on private stack
pop (mask, address); pops from private stack
pulse_next_pause; generates a power pulse
store(LRIS2K_UID); stores LRIS2K_UID
function poll_loop (sub_address_size as integer)
pop (mask, address)
mask = address & mask; generates new mask
; send the request
mode = anticollision
send_Request (Request_cmd, mode, mask length, mask value)
for sub_address = 0 to (2^sub_address_size - 1)
pulse_next_pause
if no_collision_is_detected ; LRIS2K is inventoried
then
store (LRIS2K_UID)
else ; remember a collision was detected
push(mask,address)
endif
next sub_address
if stack_not_empty ; if some collisions have been detected and
then
; not yet processed, the function calls itself
poll_loop (sub_address_size); recursively to process the
last stored collision
endif
end poll_loop
main_cycle:
mask = null
address = null
push (mask, address)
poll_loop(sub_address_size)
end_main_cycle
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LRIS2K
CRC (informative)
Appendix B
B.1
CRC (informative)
CRC error detection method
The cyclic redundancy check (CRC) is calculated on all data contained in a message, from
the start of the flags through to the end of data. The CRC is used from VCD to LRIS2K and
from LRIS2K to VCD.
Table 95.
CRC definition
CRC definition
CRC type
ISO/IEC 13239
Length
16 bits
Polynomial
16
X
+
X12
+
X5
+ 1 = 8408h
Direction
Preset
Residue
Backward
FFFFh
F0B8h
To add extra protection against shifting errors, a further transformation on the calculated
CRC is made. The One’s Complement of the calculated CRC is the value attached to the
message for transmission.
To check received messages the 2 CRC bytes are often also included in the re-calculation,
for ease of use. In this case, the expected value for the generated CRC is the residue
F0B8h.
B.2
CRC calculation example
This example in C language illustrates one method of calculating the CRC on a given set of
bytes comprising a message.
C-example to calculate or check the CRC16 according to ISO/IEC 13239
#define
#define
#define
POLYNOMIAL0x8408//
PRESET_VALUE0xFFFF
CHECK_VALUE0xF0B8
x^16 + x^12 + x^5 + 1
#define
#define
#define
NUMBER_OF_BYTES4// Example: 4 data bytes
CALC_CRC1
CHECK_CRC0
void main()
{
unsigned int current_crc_value;
unsigned char array_of_databytes[NUMBER_OF_BYTES + 2] = {1, 2, 3,
4, 0x91, 0x39};
int
number_of_databytes = NUMBER_OF_BYTES;
int
calculate_or_check_crc;
int
i, j;
calculate_or_check_crc = CALC_CRC;
// calculate_or_check_crc = CHECK_CRC;// This could be an other
example
if (calculate_or_check_crc == CALC_CRC)
{
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CRC (informative)
LRIS2K
number_of_databytes = NUMBER_OF_BYTES;
}
else
// check CRC
{
number_of_databytes = NUMBER_OF_BYTES + 2;
}
current_crc_value = PRESET_VALUE;
for (i = 0; i < number_of_databytes; i++)
{
current_crc_value = current_crc_value ^ ((unsigned
int)array_of_databytes[i]);
for (j = 0; j < 8; j++)
{
if (current_crc_value & 0x0001)
{
current_crc_value = (current_crc_value >> 1) ^
POLYNOMIAL;
}
else
{
current_crc_value = (current_crc_value >> 1);
}
}
}
if (calculate_or_check_crc == CALC_CRC)
{
current_crc_value = ~current_crc_value;
printf ("Generated CRC is 0x%04X\n", current_crc_value);
//
stream
//
}
else
{
if
{
current_crc_value is now ready to be appended to the data
(first LSByte, then MSByte)
// check CRC
(current_crc_value == CHECK_VALUE)
printf ("Checked CRC is ok (0x%04X)\n",
current_crc_value);
}
else
{
printf ("Checked CRC is NOT ok (0x%04X)\n",
current_crc_value);
}
}
}
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Doc ID 13888 Rev 9
LRIS2K
Application family identifier (AFI) (informative)
Appendix C
Application family identifier (AFI)
(informative)
The AFI (application family identifier) represents the type of application targeted by the VCD
and is used to extract from all the LRIS2K present only the LRIS2K meeting the required
application criteria.
It is programmed by the LRIS2K issuer (the purchaser of the LRIS2K). Once locked, it
cannot be modified.
The most significant nibble of the AFI is used to code one specific or all application families,
as defined in Table 96.
The least significant nibble of the AFI is used to code one specific or all application
subfamilies. Subfamily codes different from 0 are proprietary.
Table 96.
AFI coding(1)
AFI
AFI
Most
significant
nibble
Least
significant
nibble
‘0’
‘0’
All families and subfamilies
No applicative preselection
‘X’
'0
'All subfamilies of family X
Wide applicative preselection
'X
'‘Y’
Only the Yth subfamily of family X
‘0’
‘Y’
Proprietary subfamily Y only
‘1
'‘0’, ‘Y’
Transport
Mass transit, Bus, Airline,...
'2
'‘0’, ‘Y’
Financial
IEP, Banking, Retail,...
'3
'‘0’, ‘Y’
Identification
Access Control,...
'4
'‘0’, ‘Y’
Telecommunication
Public Telephony, GSM,...
‘5’
‘0’, ‘Y’
Medical
'6
'‘0’, ‘Y’
Multimedia
'7
'‘0’, ‘Y’
Gaming
8
'‘0’, ‘Y’
Data Storage
'9
'‘0’, ‘Y’
Item Management
'A
'‘0’, ‘Y’
Express Parcels
'B
'‘0’, ‘Y’
Postal Services
'C
'‘0’, ‘Y’
Airline Bags
'D
'‘0’, ‘Y’
RFU
'E
'‘0’, ‘Y’
RFU
‘F’
‘0’, ‘Y’
RFU
Meaning
VICCs respond from
Examples / Note
Internet services....
Portable Files,...
1. X = '1' to 'F', Y = '1' to 'F'
Doc ID 13888 Rev 9
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Revision history
LRIS2K
Revision history
Table 97.
Document revision history
Date
Revision
13-Jun-2006
1
Initial release.
19-Feb-2007
2
Figure 1.1: Memory mapping added.
Only bits set to ‘1’ are programmed to the AFI and DSFID Registers
(see Section 30: Write AFI and Section 32: Write DSFID.
CTUN typical value for W4/3 modified in Table 92: DC characteristics.
Small text changes.
07-Sep-2007
3
23.5 pF internal tuning capacitor (CTUN) value added (see Features
on page 1 and Table 92: DC characteristics.
VESD modified for MLP in Table 90: Absolute maximum ratings.
08-Apr-2008
4
Small text changes. Titles of Table 62 and Table 63 modified.
Response parameters modified in Section 35: Get Multiple Block
Security Status on page 72.
UFDFPN8 package mechanical data updated and dimensions in
inches rounded to four decimal digits instead of three in Table 94:
UFDFPN8 - 8-lead ultra thin fine pitch dual flat package no lead
(MLP) mechanical data
16-Sep-2008
5
LRIS2K products are no longer delivered in A1 inlays and A6 and A7
antennas.
Table 94: Ordering information scheme clarified.
24-Oct-2008
6
Section 30: Write AFI and Section 32: Write DSFID: command
descriptions modified. Small changes in Table 90: Absolute
maximum ratings.
7
Note added to Table 2: Memory map.
Section 2: LRIS2K block security modified. Table 5: Read / Write
protection bit setting and block protection status modified to include
also the Password Control bits (Password Control bits table
removed), Write Password paragraph modified.
Addresses 1 and 2 removed from Table 7: LRIS2K block security
protection after power-up and Table 8: LRIS2K block security
protection after a valid presentation of password 1.
Option_flag specified in Section 25: Read Single Block.
Note added to Table 72: Protect status.
15-Dec-2009
96/98
Changes
Doc ID 13888 Rev 9
LRIS2K
Revision history
Table 97.
Document revision history (continued)
Date
Revision
Changes
30-Sep-2010
8
Removed unsawn wafer (W4) and MLP8 (MBTG).
Modified programming time to 5 ms.
Removed 23, 28.5, and 97 pF tuning capacitor.
Section 36: Kill: UID mandatory, and error code definition.
Removed Option_flag in Section 27: Lock Block, Section 30: Write
AFI, Section 31: Lock AFI, Section 32: Write DSFID, Section 33:
Lock DSFID, Section 36: Kill. Specified Option_flag in Section 35:
Get Multiple Block Security Status.
Corrected IC reference in Table 59: Get System Info response format
when Error_flag is NOT set.
AFI_flag not supported by Fast Inventory and Inventory initiated
commands (see Section 41: Fast Inventory Initiated, Section 43:
Inventory Initiated).
19-Sep-2011
9
Updated Section 1: Description.
Updated disclaimer on last page.
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LRIS2K
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right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
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