Rfid Contactless Reader - Access OCR640 Operational Description

RFID Contactless Reader

RFID contactless reader contains both digital and analog section. Information on these two sections are
provided below.
RFID Contactless Reader – Digital Section
Device classification
Operating Voltage / Current
Digital/Analog
Crystal Frequency
PLL Multiplier
Data transfer rate
Intentional Radiation
Software requirements
RFID Contactless Reader – Analog Section
Device classification
Operating Voltage / Current
RFID protocol
Digital/Analog
Crystal Frequency
PLL Multiplier
RF Data transfer rate
Intentional Radiation
Carrier frequency
Sub Carrier frequency
Number of Antenna
Output power
RF field strength
Software requirements
Operational Description:
The RFID contactless reader is a proximity reader that operates on 13.56 Mhz carrier frequency. It
communicates to RFID passports using ISO14443 A/B protocols. The reader has two inbuilt antennas and
it keeps switching the carrier between the two antennas, polling for RFID passports. The following
diagram shows the internal blocks of the RFID reader.
USB full speed device
5V / 50mA
Digital circuitry
8 MHz
x6 (48 Mhz internal frequency)
12Mbps
No
Microsoft CCID smartcard driver is required. Only if the driver is loaded
in the host machine the digital section will enable the RFID analog
section. There are no application software requirements to get the RFID
active. However, to reader RFID passport application software (like
Golden reader tool) is required.
RFID transceiver
5V / 150mA
ISO14443 Type A and Type B
Analog circuitry
13.56 MHz
None
424 Kbps
Yes
13.56 Mhz +/- 7 KHz
847 KHz (max)
2
< 250 mW
6 A/m (RMS)
Refer the RFID contactless reader - digital section software requirements