Datasheet
14
T5557
4517E–RFID–02/03
OTP Functionality If the OTP bit is set to ‘1’, all memory blocks are write protected and behave as if all lock
bits are set to 1. If the master key is set to ‘6’ additionally, the T5557 mode of operation
is locked forever (= OTP functionality).
If the master key is set to ‘9’, the test-mode access allows the re-configuration of the tag
again.
Figure 16. Block 0 — Configuration Map in Extended Mode (X-mode)
Table 4. T5557 Types of Modulation in Extended Mode
Notes: 1. A common multiple of bitrate and FSK frequencies is recommended.
2. In PSK mode the selected data rate has to be an integer multiple of the PSK sub-carrier frequency.
Mode Direct Data Output Encoding Inverse Data Output Encoding
FSK1
(1)
FSK/5-/8 ‘0’ = RF/5; ‘1’ = RF/8 FSK/8-/5 ‘0’ = RF/8; ‘1’ = RF/5 (= FSK1a)
FSK2
(1)
FSK/10-/8 ‘0’ = RF/10; ‘1’ = RF/8 FSK/8-/10 ‘0’ = RF/8; ‘1’ = RF/10 (= FSK2a)
PSK1
(2)
Phase change when input changes Phase change when input changes
PSK2
(2)
Phase change on bit clock if input high Phase change on bit clock if input low
PSK3
(2)
Phase change on rising edge of input Phase change on falling edge of input
Manchester ‘0’ = falling edge, ‘1’= rising edge on mid-bit ‘1’ = falling edge, ‘1’= rising edge on mid-bit
Biphase 1 (’50) ‘1’ creates an additional mid-bit change ‘0’ creates an additional mid-bit change
Biphase 2 (’57) ‘0’ creates an additional mid-bit change ‘1’ creates an additional mid-bit change
NRZ ‘1’= damping on, ‘0’= damping off ‘0’= damping on, ‘1’= damping off
SST-Sequence Start Marker
Master Key
Note 1), 2)
L 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2021 22 23 2425 26 27 28 29 30 31 32
1 0 0 1 0 0 0 0 1
Data Bit Rate
00
01
10
11
RF/2
RF/4
RF/8
Res.
00000
00001
00010
00011
00100
00101
01000
10000
11000
Direct
PSK1
PSK2
PSK3
FSK1
FSK2
Manchester
Biphase ('50)
Biphase ('57)
PSK-
CF
AOR
OTP
MAX-
BLOCK
1) If Master Key = 6 and bit 15 set, then test-mode access is disabled and extended mode is active
2) If Master Key = 9 and bit 15 set, then extended mode is enabled
Modulation
0Unlocked
1Locked
Lock Bit
PWD
n5 n4 n3 n2 n1 n0
RF/(2n+2)
X-Mode
Fast write
Inverse Data
POR-Delay