iCLASS OEM75 Integration Guide, 3141-907, Rev. B.0
Page 2 of 49
January 2014
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restrictions, please immediately return this document to HID Global Corporation, 15370 Barranca Pkwy, Irvine, CA 92618-3106.
Contents
1
Overview ................................................................................................................................... 5
1.1
Introduction ........................................................................................................................................ 5
1.2
References ........................................................................................................................................ 5
1.3
Ordering ............................................................................................................................................. 5
2
Getting Started ......................................................................................................................... 6
2.1
Theory of Operation ........................................................................................................................... 6
2.2
Peripheral Circuits ............................................................................................................................. 7
2.2.1
External Noise Filter ...............................................................................................................................7
2.2.2
Adding External LEDs or Beeper ............................................................................................................7
2.2.3
Adding External Resistors ......................................................................................................................7
2.3
Transitioning from HID’s OEM50 or eProx Lock modules .................................................................. 7
2.3.1
OEM50 ...................................................................................................................................................8
2.3.2
eProx Lock Module .................................................................................................................................8
3
Software Integration Recommendations ............................................................................... 9
4
Mechanical Specifications .................................................................................................... 11
4.1
OEM75 Module – 3141Axx .............................................................................................................. 12
4.2
OEM75 Module – 3141ADx ............................................................................................................. 13
4.3
Antennas ......................................................................................................................................... 14
4.3.1
Antenna Model 3142 ............................................................................................................................ 15
4.3.2
Antenna Model 3144 ............................................................................................................................ 15
4.3.3
Antenna Model 3146 ............................................................................................................................ 16
4.3.4
Antenna Model 3148 ............................................................................................................................ 16
4.3.5
Antenna Model 3153 ............................................................................................................................ 17
4.4
Antenna Interfacing.......................................................................................................................... 17
5
Electrical Specifications ........................................................................................................ 18
5.1
Power Supply .................................................................................................................................. 18
5.2
Electrical Connections ..................................................................................................................... 18
5.3
I/O Specifications ............................................................................................................................. 20
5.4
P1 connector Ping Mode Static States ............................................................................................ 22
5.5
Electrical Application Hints .............................................................................................................. 22
6
Firmware ................................................................................................................................. 23
6.1
Applications ..................................................................................................................................... 23
6.2
Feature Bundles and Configuration ................................................................................................. 23
6.3
Updates ........................................................................................................................................... 23
6.4
Communication ................................................................................................................................ 23
6.5
SPI Implementation ......................................................................................................................... 23
6.6
General Recommendations ............................................................................................................. 24
6.7
SPI Message Transmission ............................................................................................................. 27
6.7.1
Host SPI Master Write Function ........................................................................................................... 27
6.7.2
Host SPI Master Read Function ........................................................................................................... 27
6.7.3
Peripheral Processor SPI Slave Interrupt Processing ........................................................................... 27
6.7.4
Sample Source Code ........................................................................................................................... 28
6.8
I²C Implementation .......................................................................................................................... 32
6.8.1
General Recommendations .................................................................................................................. 32
6.8.2
I²C Baud Rates and Clock Stretching ................................................................................................... 32
6.8.3
I²C Message Transmission ................................................................................................................... 32
6.8.4
Sample Source Code - I²C ................................................................................................................... 34
