ib technology
Connector and link descriptions
a) CON J1 (2.5mm Power Socket (+ve centre pin):
Connector for external 9-12v DC supply.
b) Link J2 (2 pin, 0.1 inch header):
Connects 5 volt output from on-board voltage regulator to the rest of the board.
c) CON J3 (2 pin , 0.1 inch polarised connector):
Connector for external 5v stabilised power supply to board.
d) Link J4 (2 pin, 0.1 inch header):
Connects 5 volt supply on board to USB module.
e) Link J5 (2 pin, 0.1 inch header):
Connects external USB bus 5 volt supply to the rest of the board.
f) CON J6 (2 pin, 0.1 inch header):
Connection for external 125kHz, 700 uH antenna coil.
g) Link J7 (2 pin, 0.1 inch header):
Connects 5 volt supply on board to MAX202 RS232 level converter.
h) Links J8 (6 pin, 0.1 inch header):
Selects on-board 13.56MHz PCB antenna or external 125kHz antenna coil.
AN3
AN3
AN1
AN5
AN4
AN2
AN6
AN2
AN6
AN1
For 125 kHz antenna
link AN1-AN5
AN5
AN2-AN6
AN4
For 13.56 MHz antenna
link AN1-AN3
AN2-AN4
i) CON J9 (2 x 10 way, 0.1 inch header):
RED LED
GRN LED
OP3
OP2
USB SLEEP
USB CLK
USB PWREN
USB RESET
0v GND
5v
1
OP1
OP0
MCLR / (VPP)
RX / (DATA)
TX / (CLK)
GND
CTS
SW1
0v GND
5v
All available interface signals from
RWD module and USB module.
j) CON J10 (9 pin female, D-type):
RS232 connector (1, 4, 6 joined, 2 – Tx, 3 – Rx, 5 – GND, 8 – CTS)
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