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Related Manuals for bynav C2-M2X EVB
Summary of Contents for bynav C2-M2X EVB
- Page 1 Version ： V1.0 Date ： 2023-08-23 C2-M2X EVB User Manual...
- Page 2 Revision History Edition Content Revised by Release date V1.0 Initial Y.ZHOU 2023-08-23...
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Page 3: Table Of Contents
1.1 Product introduction ................... 1 1.2 EVB Architecture ................... 1 1.3 Function ......................2 1.4 EVB package ....................3 2 Hardware Introduction ..................4 2.1 C2-M2X EVB ....................4 2.2 Power diagram ..................... 4 3 Module Introduction .....................5 3.1 28pin connector ....................5 3.2 Power input ....................8 3.2.1 5V DCDC boost circuit ................ - Page 4 4.3 Connection and Use .................. 19 5 Precautions ......................20 5.1 Precautions ....................20 5.2 Common Troubleshooting ............... 20...
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Page 5: Overview
It is primarily used for testing various functions of the M20/M21/M22 modules and provides power and various interfaces for these modules. The C2-M2X EVB can be connected to a computer using a Type-C data cable and can also be used in conjunction with the BY6Vx carrier boards. -
Page 6: Function
UART-USB 5V-3.3V step-down Switch automatically 3.3V input 3.3v-5v boost indicator Figure1-1 C2-M2X diagram 1.3 Function The functional module layout of C2-M2X EVB is as follows: Figure1-2 C2-M2X EVB 1. RF Reception Circuit 2 / 25... -
Page 7: Evb Package
10.Dual Row Header Pins 11.Three-hole Pins 12.Analog Switch Circuit 13.LED Indicator Lights 14.Test Points 15.RF Connectors 16.Mounting Holes 1.4 EVB package C2-M2X EVB mainly includes the following items: C2-M2X EVB Certificate of conformity RF converter cable 3 / 25... -
Page 8: Hardware Introduction
2 Hardware Introduction 2.1 C2-M2X EVB Figure2-1 C2-M2X 2.2 Power diagram 5V-3.3V Step-down When USB is plugged in, the power of header pins is disconnected Main power 3.3V power 3.3V-5V boost Antenna power feed Figure2-2 Power diagram 4 / 25... -
Page 9: Module Introduction
3 Module Introduction 3.1 28pin connector The C2-M2X external interface is led out through a 28-pin double row of pin header, with a pin spacing of 2mm. Figure3-1 C2-M2X pin header Table 3-1 C2-M2X Pin definition 5 / 25... - Page 10 Description Comment SPI_MOSI/I2C_S SPI interface data output 3.3V LVTTL, leave it I2C interface data unconnected if not in use SPI interface chip select 3.3V LVTTL, leave it SPI_CS/I2C_SCL I2C interface clock unconnected if not in use Ethernet connection indicator 3.3V LVTTL, leave it ETH_LINK_ACT signal unconnected if not in use...
- Page 11 3.3V LVTTL, leave it RXD1 COM1 serial input unconnected if not in use signal and power ground TXD2：COM2 serial output TXD2/SEVENT_O 3.3V LVTTL, leave it SEVENT_O1：output pulse signal 1/GPIO unconnected if not in use GPIO：other RXD2：COM2 serial input RXD2/SEVENT_I SEVENT_I2：input external pulse 3.3V LVTTL, leave it 2/GPIO signal...
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Page 12: Power Input
The 3.3V power input goes through a DC-DC boost chip to output 5V voltage, providing power to the antenna. Figure3-2 5V boost circuit 3.2.2 3.3V step-down circuit The Type-C interface inputs 5V voltage to power the C2-M2X EVB through a 3.3V step-down circuit. 8 / 25... -
Page 13: Rtc Circuit
Figure3-3 3.3V step-down circuit 3.2.3 RTC circuit When using C2-M2X EVB for a hot start, backup power needs to be supplied to the module. 9 / 25... -
Page 14: Uart-Usb Circuit
Figure3-4 RTC circuit Important Notes: The V_3V3_BCKP power supply is typically provided by a battery. The battery charging circuit should be designed with reverse protection to ensure that the battery only powers VCC_3V3_BCKP and does not backflow into the 3.3V power domain, as shown in Figure D24. 3.3 UART-USB circuit The evaluation board features a Type-C interface as the power and communication interface, enabling communication through a UART to... -
Page 15: Analog Switch
Figure3-5 UART-USB module 3.4 Analog switch C2-M2X EVB is equipped with four analog switches. When USB is disconnected, the M2X module's serial port is connected to the header pins. When USB is connected, the M2X module's serial port switches to USB, disconnecting from the header pins. -
Page 16: M20/M21/M22 Module
Figure3-6 analog switch circuit 3.5 M20/M21/M22 module The evaluation board uses M20/M21/M22 modules with the following characteristics: 22nm process GNSS SOC chip Alice Deeply coupled integrated navigation (DR accuracy up to 0.2%) Full-system, full-frequency GNSS (1507 channels) ... -
Page 17: Rmii Phy
Figure3-7 M20/M21/M22 module 3.6 RMII PHY C2-M2X EVB features an Ethernet PHY circuit, which can be used for network interface interactions. 13 / 25... -
Page 18: Rf Reception Circuit
Figure3-8 RMII PHY circuit 3.7 RF reception circuit 3.7.1 Antenna feeding Circuit 3.7.1 Antenna Feeding Circuit After the power supply input goes through reverse protection and a secondary LC filter circuit, it provides power to the antenna. The RF signal, after passing through a DC-blocking capacitor, is then input into the M20/M21/M22 modules. -
Page 19: Low-Noise Amplification Circuit
Figure3-9 Antenna Feeding Circuit 3.7.2 Low-noise amplification circuit C2-M2X EVB has a low-noise amplification circuit that can amplify the input RF signal. Figure3-10 low-noise amplification circuit 3.8 LED indicators C2-M2X EVB is equipped with LED indicator lights to indicate the 15 / 25... - Page 20 operational status of various functional units. 16 / 25...
- Page 21 Figure3-11 LED indicator Table 3-2 Indicator description Indicator Color Description When the power supply is normal, the indicator remains Power indicator（3.3V） Green When the serial port is in operation, the indicator UART indicator Green remains on. During normal operation, the indicator blinks. PPS indicator Green If D1 is constantly on and D2 is constantly...
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Page 22: Operation Guide
4 Operation guide 4.1 Powering On (1) The C2-M2X EVB can be powered directly via Type-C. The Type-C interface on the board serves both power supply and serial communication functions. Simply connect the Type-C port on the module to your computer using a Type-C USB cable to power it on. - Page 23 Figure4-1 Two COM ports recognized in Device Manager 4.3 Connection and Use The GNSS antenna should be installed in a stable, unobstructed area. If using it indoors, ensure that the antenna's RF signal can penetrate indoors. Connect the antenna to the C2-M2X development board using RF coaxial cable and use a Type-C data cable to connect the C2-M2X to external communication devices.
- Page 24 5 Precautions 5.1 Precautions C2-M2X EVB is suitable for laboratory or engineering development environments. Before starting any operations, please read the following precautions: 1. Under no circumstances should performing the hot-plugging on the development board's interfaces or the carrier boards.
- Page 25 1. Serial Communication Issues: Check if the power supply voltage is correct. Verify that the USB cable or the serial cable of the L-shaped carrier board is properly connected. Ensure that the USB driver is installed and up to date. Verify if the serial indicator lights on the development board are functioning correctly.Check the software for the correct serial port selection and baud rate.
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