Globalstar ST150 - Block Diagram; Core Components; Nordic Soc; ASIC Satellite Transmitter

9150-0125-01 R-4
ST150M User Manual
Confidential & Proprietary Information
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2.3 BLOCK DIAGRAM
The ST150M Block Diagram illustrates the overall module system.
2.4 CORE COMPONENTS
2.4.1 Nordic SoC
The ST150M contains a Nordic nRF52840, which utilizes an ARM Cortex-M4 processor with integrated
communication protocols including Bluetooth 5.0, NFC, I
2
C, SPI, UART and Client USB.
Details on the nRF52840 SOC can be found in documentation from Nordic Semiconductor:
https://infocenter.nordicsemi.com/index.jsp?topic=%2Fug_nrf52840_dk%2FUG%2Fdk%2Fintro.html
2.4.2 ASIC satellite transmitter
The ST150M contains a Globalstar proprietary ASIC used for all satellite transmission and related operations
including signal modulation, channelization, and amplification.
Communication is handled over UART interface bus connecting to the MPU.
FIGURE 4 - OVERALL MODULE SYSTEM