Reference Manual Preliminary
Prox–DU & Prox–SU
www.gemalto.com Release for first samples Do not use for final design
DOC118569A Public Use Page 31/134
Configuring the reader/writer
The Prox–DU and Prox–SU device’s configuration is stored into an internal EEPROM
memory specifying various parameters used by the devices for their operation.
For normal use it is not needed to modify the reader/writer’s configuration.
These parameters can be modified if needed using the “Write EEPROM” and “Read
EEPROM” commands supported by the HID interface. Refer to the “Proprietary commands
on the HID interface” paragraph for more information.
Note: Special care should be considered on the understanding of the parameters. A
modified value may result in an unexpected operation of the Prox–DU and Prox–SU device
if the parameter is not known by the user.
EEPROM parameters contents
The next table shows the EEPROM parameters contents:
Offset Usage Default Value
Control parameters
0 EEPROM structure version 01h
General parameters
1 Dual interface card protection 00h
2 Card notification delay (x 100 ms) 01h
3 Communication time-out with GemCore POS Pro (x10 sec) 11h
4 to 8 RFU (5 bytes) 00h
Contactless automaton parameters
9 Automaton timing 11h
10 Extended ATQB support 00h
11 ISO level preference 04h
12 Allowed bit rates list B3h
13 T=CL card presence check behavior 00h
14 to 16 RFU (3 bytes) 00h
Miscellaneous parameters
17 Reserved for test FFh
18 to 24 RFU (7 bytes) 00h
General RF parameters
25 RF reset time 00h
26 RF on delay 00h
27 RF parameters use 00h
28 RF power attenuation 00h
29 to 32 RFU (4 bytes) 00h
RF parameters for ISO14443-A cards
33 RxThreshold for 106 kbps 84h
34 RxThreshold for 212 kbps 84h
35 RxThreshold for 424 kbps 84h
36 RxThreshold for 848 kbps 84h
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