8D525W20PB251

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8D525W20PB251 application field and working principle

8D525W20PB251 is an aerospace and defense USB hub created by Delphi us. It is designed to provide robust and reliable connections between a number of devices. It is ideal for use in aerospace systems, including fighter aircraft and commercial airliners that require the highest levels of freedom, performance, safety, and communications.

Overview

The 8D525W20PB251 is an MIL-STD-1553B redundancy protection hub with four independent microprocessor cores that control a total of eight high-speed USB ports. It is designed to provide critical link between a host device such as a CPU or communication subsystem and peripheral devices such as processors, memory and communication nodes. With the 8D525W20PB251 USB Hub, you can simultaneously connect eight USB devices to a single MIL-STD-1553B interface. The hub also provides a secure connection to the MIL-STD-1553B bus via a single set of four high-speed USB ports.

The USB Hub is designed to withstand extreme environmental conditions, from -55°C to +105°C. It features rugged enclosures with integrated EMI/RFI shielding, making it ideal for use in harsh environments. The 8D525W20PB251 USB Hub is also designed for easy installation, requiring no tools for installation. The USB Hub is also compliant with MIL-STD-1750A specifications, making it suitable for use in vehicles.

Features

The 8D525W20PB251 USB Hub offers several features that make it ideal for use in aerospace and defense applications. Its microprocessor cores are designed to accurately and quickly process MIL-STD-1553B messages from the host and peripheral device.

The hub features four independent USB ports, each providing high-speed transfer rates up to 480Mbps. Each port also has an additional four low-speed (1.5Mbps) ports that are ideal for connecting slow-speed peripherals, such as keyboards and mice.

The hub is designed with ESD and overvoltage protection, providing enhanced safety for the device and its connected peripherals. The USB Hub also features an on-board real-time clock, allowing for synchronization of time-sensitive activities between connected devices.

The 8D525W20PB251 USB Hub is also designed to provide secure connections. The hub supports secure authentication of USB devices, allowing only authorized devices to connect to the hub. Additionally, the hub supports hot-plugging, allowing devices to be quickly and easily connected or disconnected without requiring a restart of the host device.

Working Principle

The 8D525W20PB251 USB Hub works by using microprocessor cores to process MIL-STD-1553B messages and data from a host and peripheral device, and then routing the data to the appropriate port. The microprocessor cores are pre-programmed to identify and securely authenticate the connected devices, while simultaneously determining their transfer protocol and data rate.

Once the information is authenticated, the microprocessor cores can then perform the necessary data transfer between the connected devices via the 8D525W20PB251 USB Hub. As data is transferred, the hub\'s onboard hardware controller manages and organizes it. Finally, the data is routed to the appropriate port, either a high-speed or a low-speed one.

Conclusion

The 8D525W20PB251 USB Hub is an ideal solution for use in aerospace and defense applications. With its four independent microprocessor cores, eight high-speed USB ports, and MIL-STD-1553B compliance, the USB Hub provides a reliable connection between a host device and its connected peripherals. Additionally, it is designed for rapid installation and easy setup, making it an ideal choice for the demanding environment of aerospace and defense.

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