DE70322T/DE70322TC Demonstration Kit User Manual UM70322T/2 October 2019 Advance Features AIS Class B AIS transceiver technology demonstrator On-board GNSS receiver Designed to meet IEC62287-1 Dual UART interface 2 Watt Tx operation Small size: 122 x 57 mm On-board ARM host microcontroller (DE70322T) Dual, independent GMSK receivers On-board SCT7033 microcontroller (DE70322TC) USB interface to PC C-BUS interface to host microcontroller 1 Brief Description The DE70322T/DE70322TC is a complete AIS Class B CSTDMA (IEC 62287-1) technology demonstrator aimed at speeding manufacturers design and development of AIS Class B transponders using the CMX7032 AIS Class B Baseband Processor with RF Synthesiser IC. The design is a flexible platform which allows users to configure and evaluate the CMX7032 with either 7032/7042FI-1.x or 7032/7042FI-3.x (for use with ExactEarths exactTraxprotocol). The DE70322T/DE70322TC implements a dual channel receiver / single transmitter on 161.975MHz (AIS channel 1) and 162.025MHz (AIS channel 2) with 25kHz channel spacing and 9600bps over-air data rate. The receivers are programmable across the entire marine band (156.000 to 162.050 MHz) while the transmitter is optimised for use in the upper marine band (160.000 to 162.050 MHz). The unit is available in two variants: DE70322T uses an on-board ARM microcontroller (STM32F411VET6) which allows a USB-connected host to directly control the CMX7032 using the CML script processing language or to run an in-built Rx-only application. A JTAG header is also provided so that customers can implement their own code and/or implement a complete Class-B CSTDMA protocol stack. The microcontroller has sufficient memory and processing capability to run a suitable Class-B SOTDMA (IEC 62287-2) protocol stack, however the RF output of the pcb is limited to 2W. DE70322TC uses an SCT7033 microcontroller to implement a full Class-B CSTDMA protocol stack. This document describes operation of the DE70322T. The SCT7033 Datasheet should be consulted for further details and operation of the DE70322TC. 2019 CML Microsystems Plc Demonstration Kit for CMX7032 DE70322T The CMX7032 is configurable over the C-BUS interface once it has been loaded with the appropriate Function Image . The on-board ARM microcontroller is included which can load a Function Image into the CMX7032 at power-up. All necessary RF circuits, such as VCOs, a 2 watt PA (CMX902), harmonic filter, antenna switching, LNA and GNSS module are provided to facilitate easy evaluation and demonstration of the design as a Class B CSTDMA unit. The DE70322T/DE70322TC design is production-engineered for low cost, with a minimum number of component types and values and using only low-cost, off-the-shelf components and addresses the component obsolescence issues with the DE70321. With the addition of suitable power supply and interface components, a complete Class-B AIS unit can be easily implemented. The UART signals are 3V3 logic levels which require external interfaces both for protection and signal conditioning. These are not provided on-board so as to leave the required interfaces as customer selectable options (NMEA-0183, NMEA-0183-HS, NMEA-2000, Bluetooth, IEC 61162-450, Ethernet etc.). The USB interface provided is suitable for direct connection to a host PC using the micro-USB connector. Note that NMEA-2000 / CANBUS is not supported on the STM32F411 microcontroller used on this pcb, however the STM32F413 does support this interface and is pin-compatible. Status-indicating LEDs are provided on-board and also routed to the 40-way multi-way connector. A number of buffered open collector outputs and inputs to the ARM are also provided on the 40-way multi-way connector. The TX ACTIVE signal is provided to control an attached VHF-AIS antenna splitter if required, or as a test point used during testing to IEC 62287-1. 2019 CML Microsystems Plc 2 UM70322T/2