10

e5561

4699A–RFID–04/03

Configuration

The configuration data of the e5561 is stored in block 0 of the EEPROM which contains

the following information (see Figure 9):

•

Type of modulation and bit rate

•

ID code length

•Several lock-bits

•

Selected terminator

•

Stop mode selection for short/long authentication time

•

Adaptation of resonance frequency (if auto-adapt is not used)

The configuration may be changed by programming block 0. However, this is only possi-

ble if the lock-bit L_0 in block 0 has not been set.

Figure 8. Configuration Data in Block 0

Block 9 contains the customer configuration and the password (if password function is

enabled). The customer-configuration data in block 9 includes (see Figure 10):

•

Lock-bit for ID code (blocks 1 and 4/1 to 4)

•

Lock-bit for crypro key (block 5 to 8)

•

Lock-bit for block 9

•

Password function enable

If the password function has been enabled, bits 4 to 31 represent the password of the

e5561.

Figure 9. Customer Configuration Data in Block 9

Modulation (0 = Manchester, 1 = Bi-phase)

Bit-rate (0 = RF/32, 1 = RF/64)

Bitcount (0 = 128 bit, 1 = 64 bit) ID

Terminator

Stop mode (0 = off, 1 = on)

Adapt (0 = automatic, 1 = value according to user programmed

adapt bit setting)

Number of AUT64-times, 0 = 24 times, 1 = 8 times

Lock-bit for block 0 (1 = active)

Tuning bits

20 bit Supplier Chip ID (SCID)

31

20

6

4

16

13

11

MOD

15

14

[1]

[0]

0

1

2

3

7

8

9

19

17

30

10

5

12

18

29

25

22

24

23

28

26

21

27

L_0

BR

BC

T

AUT

adapt bits

11 1

A

S

Test only

Terminator

Terminator

No terminator

MOD

BR

BC

T

S

A

AUT

L_0

adapt bits

0

0

1

0

0

1

1

1

28 bit Password

31

20

16

13

15

14

19

17

12

18

6

4

11

0

1

2

3

7

8

9

30

10

5

29

25

22

24

23

28

26

21

27

L_ID

L_K

L_9

PWD

PWD Password enable ('1' = active)

L_9

Lockbit for block 9 ('1' = active)

L_K

Lockbit for blocks 5 to 8 (crypto key) ('1' = active)

L_ID Lockbit for blocks 1 and 4/1 to 4 (ID code) ('1' = active)