Document Version 1.0
Last revised on
2018-‐10-‐22
Page 16 of 79
Reference Manual for uTrust 5501 F Reader/Writer Module
4.
uTrust 5501 F Characteristics
4.1.
uTrust 5501 F High-‐Level Architecture
4.1.1.
Block Diagram
The link between uTrust 5501 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 5501 F implementation,
peripherals are connected to the device controller:
●
LED for reader status indication
●
Buzzer
●
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
ISO 7816 contact protocols, 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 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.
