Caen RFID Hadron R4320C, Technical Information Manual

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HADRON R4320C/R4320CB - Technical Information Manual 14
Shutdown pin
R4320C/R4320CB SHUTDOWN pin allows to set the module in power off mode (current consumption less
than 1mA) and can be used also for manual reset operation.
SHUTDOWN pin is pulled-down by an internal resistor.
Fig. 2.4: Hadron R4320C/R4320CB SHUTDOWN pin connection
Communication interface selection
The communication with Hadron R4320C/R4320CB module can be performed via UART or USB interface.
If at power up an USB host is already connected to the module the USB interface is selected otherwise if
USB pins are not connected the UART interface is selected.
UART connection
The RXD/TXD pins are used to communicate with the R4320C/R4320CB module via UART port. Since
R4320C/R4320CB RX/TX are TTL level signals, to connect it with a PC, a TTL/RS232 translator shall be used
(please refer to the diagram below)
4 .
To establish a link with the device host COM port shall be configured as follows:
Baud rate: 115200
Parity: None
Data bits: 8
Stop bits: 1
Flow Control: none
4
R4320C service board (R4320CEVB) hosts both UART (via USB converter) and USB full interfaces.