5
Proprietary & Confidential
Notes:
1.)
Open collector pin if configured as I2C port
2.)
Signal Dir valid if module is configured as SPI Master
MC13224
SoC
Ceramic LPF
MBC13720
Power
Amplifier
CEL
uPG2214T/R
Switch
24 MHz
Crystal
512KB
Flash memory
BALUN
Network
Antenna connector
MMCX
32768Hz RTC
Power is supplied to the modem through pins 38, 39 and 40.
Pin 39 must be supplied with 2.7 to 3.3 Volts and powers the digital and RF functional
entities of the modem. The modem has internal filtering circuitry to smooth out the
supply voltage but it has no onboard regulators.
All of the remaining pins of the modem are I/O lines of the processor, except for pin 50,
which is the RF I/O port.
The voltage on any of the I/O lines should never exceed VCC+0.3 V.
Pins 1 to 4 are attached to UART 2. Pins 5 to 8 are attached to UART1. If connecting to
the serial port of a PC, a level-shifting transceiver must be employed in order to provide
the appropriate voltage levels on the RX and TX lines.
Communication with the VN210 radio modem happens through serial port 1. The baud-
rate is set to be 115200, 8N1.
Open a terminal software on a serial port with the above settings and connect to the RF
modem. Upon power up, the terminal will display a list of the available commands.
Содержание VN210
Страница 1: ...VN210 RF Modem User Manual...
