Document Version 1.2
Last revised on
2017-09-26
Page 17 of 92
Reference Manual for uTrust 4701F and uTrust 4711F Readers
4.
uTrust 47xx F characteristics
4.1.
uTrust 47xx F high level architecture
4.1.1.
Block diagram
The link between uTrust 47xx F and the host to which it is connected is the USB interface providing
both the power and the communication channel.
The device controller has several interfaces available. In the uTrust 47xx F implementation three
peripherals are connected to the device controller:
●
LED for reader status indication
●
A contact smart card interface
●
An RF front-end that handles the RF communication
The controller embeds flash memory that contains the firmware developed by Identiv to handle all
the ISO7816 contact protocol, the RF communication protocols and the PC/SC communication
protocol with the host. The flash can be upgraded once the device is deployed in the field, hence
enabling firmware upgrades to add and potentially patch features.
The RF front-end ensures the coding/decoding/framing modulation/demodulation required for the RF
communication. It is controlled by the device controller through registers.
The matching circuitry provides the transmission and receiver paths adaptation for the antenna to
function properly.
