HID Hi-O iCLASS Installation Guide - Manual (Page 45)

iCLASS OEM75 Integration Guide, 3141-907, Rev. B.0
January 2014 Page 45 of 49
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7 OEM75 Module Configuration
7.1 Configuration Options
The OEM75 is a highly configurable device to meet the needs of the integrators’ application. This
section clarifies how the OEM75 operates and how to reconfigure the unit.
Configuration Examples:
• Access and read credentials (for example, iCLASS, MIFARE, PIV, DESFire, ISO15693).
• Active serial interfaces (for example, Wiegand, Clock and Data, UART/SPI, or I2C).
• Device operational power mode (normal power or ultra low power).
• I/O operations (Card_Present Signal Timing) that are normally used as a processor
interrupt before the card data is buffered on the serial ports.
Given the OEM 75 configurable options, an HID Applications Engineer helps you identify the exact
configuration of the OEM75 for your application.
7.2 Configuration Card Availability
HID provides configuration cards to integrators for aiding the OEM75 integration. An HID
Applications Engineer makes and distributes these configuration cards to you. Contact HID for
additional configurations not included in the OEM75 Development Kit.
7.3 Custom Configurations for High Volume Manufacturing
Availability
Once your OEM75 configuration is solidified, an HID Applications Engineer creates a custom
configuration part number. OEM75 custom configuration orders are then possible directly from HID
eliminating additional steps in your manufacturing line for reconfiguring the OEM75.
7.4 Reconfiguring the OEM75 in Normal Power Mode
To reconfigure the OEM75 in Normal Power Mode reset power and present the configuration card
within 25 seconds of power up.
7.5 Reconfiguring the OEM75 in Ultra Low Power Mode
Since the main processor is powered down in Ultra Low Power Mode, it is not necessary to cycle
power before presenting the configuration card. Certain caveats must be recognized when
operating in ultra-low power mode. When operating in Ultra-Low Power mode the integrator must
recognize that the timing of operations must of necessity change. There are two intelligent
components on the OEM 75 module. One of them controls polling operations and interfaces to the
antenna assembly and is active in any operational power mode, the other is the microprocessor.
In Ultra-Low Power mode the microprocessor is powered off. When a valid card is presented and
recognized by the Antenna Control component a wake-up signal is generated which powers up the
microprocessor. The microprocessor must perform initialization operations. One of these tasks is to
configure the I/O ports on the microprocessor itself. The signal from the Antenna Control
component is connected to an input pin on the microprocessor which is configured as an interrupt
source to the microprocessor. This interrupt source must be polled for a high value signal and not
edge triggered as the edge can be lost during the power-up initialization process.