Smart Machine Smart Decision
SIM521x EVB User Guide
11.04.2011
23
6 Quickly start
6.1 Running
There are two ways to provide power supply to SIM521x module: one is to use the 6V power
supply provided in the EVB kit; the other is to use USB port of personal computer.
(1)
When user use the power supply, if user insert 6V DC source adapter, user should connect
ADAPTER_VBAT pin and VBAT pin on the EVB board; then insert a valued SIM card and
check if the antenna is connected, and make sure that RF control switch is set to ON; finally
press the on/off switch for about 1 second, and then SIM521x module will begin running.
(2) Another option is to use USB port of Computer as power supply. To do so, user need to
connect USB_VBAT pin and VBAT pin on the EVB board, and make sure that RF control
switch is set to ON. Firstly insert the SIM card and connect the antenna, then connect the PC
with USB-to-USB cable and press the POWER_ON button for one second, then SIM521x
will start running.
User can see the light on the EVB flashing at a certain frequency about 1.25Hz. By the state,
user can judge whether the EVB and SIM521x is running or not. No function and test can be
executed if user has not connected necessary accessories.
NOTE: This EVB board supports USB power supply when user connects USB_VBAT and
VBAT together.
6.2 Installing Driver
There are 3 ways to connect the module to user’s computer and communicate via HyperTerminal:
(1) Using USB-TO-USB cable;
(2) Using UART-TO-USB cable;
(3) Using UART-TO-UART cable.
In the first case, user need install the module USB driver, which can be got from our FAE or sales;
For the UART to USB driver, user may get it from the CD in the EVB kit; If user use UART to
UART cable, there are certain points to be noticed. One can use UART to UART cable in EVB kit,
if the customers want to use their own UART to UART cable, please make sure that the pin
sequences of it is same as those of cable in EVB kit, pin sequences of which are shown in Figure
9.
