Reference Manual for the CLOUD 370x F Contactless Desktop Readers
Document Version 1.0
Last revised on 2014-07-22
Page 17 of 82
4:
Characteristics of the CLOUD 370x F Readers
4.1:
High-Level Architecture
4.1.1:
Block Diagram
The link between a CLOUD 370x F reader and the host computer to which it is connected is the standard
Universal Serial Bus (USB) 2.0 interface, which provides both the power and the communication
channel.
Device controller
RF front-end
EMC
Matching circuitry
LED
text
text
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Antenna
To host
The device controller has several interfaces available. In the CLOUD 370x F implementation two
peripherals are connected to the device controller:
•
LED for reader status indication
•
A radio frequency (RF) front-end that handles the RF communication
The device controller contains the firmware developed by Identiv to handle all the RF communication
protocols and the PC/SC communication protocol with the host. The flash memory can be upgraded
after the device controller has been deployed in the field, hence enabling firmware upgrades to add and
patch features.
The RF front-end ensures the coding/decoding/framing modulation/demodulation required for the RF
communication. It is managed by the device controller through registers.
The matching circuitry provides the transmission and receiver paths adaptation for the antenna to
function properly.