Developing Modem Applications

Note

You can also hang up an asynchronous data call by de-asserting DTR.

However, if DTR is high on only one port and you then de-assert it, the

 

 

modem will begin its shutdown sequence.

Mobile-Terminated Asynchronous Data Calls

The GSP-1620 modem lets the application device (DTE) connected to it receive an asynchronous data call. It is the responsibility of the DTE application to keep the modem powered up if it is to receive incoming asynchronous data calls.

Here is what happens during a mobile-terminated asynchronous call:

•The host server directs a host modem to call the GSP-1620 modem (DCE), using the Dial Number (DN) assigned to the GSP-1620 modem by the Service Provider.

•The incoming call toggles RI and displays RING to the appropriate port.

•The ATA command tells the GSP-1620 modem (DCE) to answer an incoming call (for details, see Answer Incoming Call (A) on page 6-18; also see Automatic Answer (S0) on page 6-25).

•How the modem answers the call depends on how the ports are configured. Port behavior for incoming asynchronous calls is the same as for packet calls. For details, see Answering Calls Using the Data Port Only on page 5-28 and Answering Calls Using the Data and Control Ports on page 5-29.

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Qualcomm GSP-1620 specifications Mobile-Terminated Asynchronous Data Calls
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GSP-1620 specifications

Qualcomm GSP-1620 is a powerful, cutting-edge SoC (System on Chip) that is tailored for the demands of modern mobile and embedded applications. Designed to deliver high performance, energy efficiency, and advanced connectivity, the GSP-1620 stands out in the competitive landscape of processor solutions.

One of the main features of the GSP-1620 is its multi-core architecture, which facilitates simultaneous processing of multiple tasks. This architecture ensures enhanced multitasking capabilities, allowing devices to run complex applications smoothly without compromising performance. The GSP-1620 integrates Qualcomm's latest Kryo CPU technology, which optimizes performance while maintaining lower power consumption.

The GSP-1620 excels in graphics performance, powered by Adreno GPU technology. This integration enables rich visual experiences, making it ideal for gaming, augmented reality, and immersive multimedia applications. The GPU's capabilities allow for high frame rates and stunning graphics, ensuring that users enjoy a premium visual experience.

In terms of connectivity, the GSP-1620 supports advanced wireless technologies, including 5G, Wi-Fi 6, and Bluetooth 5. With these capabilities, users can expect ultra-fast data speeds, low latency, and improved networking performance. The integration of Qualcomm’s Snapdragon X55 modem enhances the SoC's capability to deliver seamless connectivity in various environments, whether indoors or outdoors.

Moreover, the GSP-1620 features cutting-edge AI and machine learning capabilities, enabled by Qualcomm’s Hexagon DSP technology. This allows for efficient processing of AI tasks, supporting functionalities such as voice recognition, image processing, and real-time translation. It makes the GSP-1620 suitable for applications in smart devices, automotive solutions, and industrial IoT.

Security is a priority in the design of the GSP-1620. The SoC incorporates hardware-based security features that protect sensitive data and applications, ensuring robust defense against cyber threats. This is vital for applications requiring high levels of security, such as mobile payments and confidential communications.

Lastly, the GSP-1620 is designed with scalability in mind. Its modular architecture allows manufacturers to customize the chipset according to specific needs, making it a versatile solution for a broad range of devices, from smartphones and tablets to wearables and embedded systems.

In summary, Qualcomm GSP-1620 combines high-performance processing, advanced graphics capabilities, sophisticated connectivity options, AI support, and robust security features. With these characteristics, it sets a new standard for mobile and embedded platforms, driving innovation in a variety of industries.
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