The OXUPCI954-LQAG, manufactured by Oxford, is a high-performance PCI Express (PCIe) to Universal Asynchronous Receiver/Transmitter (UART) bridge. It is designed to provide seamless connectivity between a PCIe host system and serial devices. This chip is commonly used in applications requiring reliable and high-speed serial communication where a larger number of serial ports are needed.

Applications:

• Industrial automation systems
• Point-of-Sale (POS) systems with multiple peripherals
• Data acquisition systems requiring several serial connections
• Serial device servers with high port density
• Embedded systems
• Medical equipment
• Telecommunications equipment

Features:

• PCI Express x1 compliant
• Eight high-speed UART ports
• Data transfer rates up to 15 Mbps per port
• Supports 5, 6, 7, or 8 data bits
• Supports 1 or 2 stop bits
• Odd, even, mark, space, or no parity
• Built-in DMA controller for high-performance data transfer
• RS-232, RS-422, and RS-485 support
• Hardware and software flow control
• Interrupt support
• Operating temperature range: -40°C to +85°C
• Lead-free package

Benefits:

• High-performance serial communication: Provides fast and reliable data transfer between PCIe host and serial devices.
• Versatile connectivity: Supports various serial standards, including RS-232, RS-422, and RS-485, offering flexibility in connecting to different types of serial devices.
• Easy integration: PCIe interface simplifies integration into existing systems.
• Reduced CPU load: Built-in DMA controller offloads data transfer tasks from the CPU, improving system performance.
• High port density: Eight UART ports allow connecting a larger number of serial devices to a single PCIe slot.
• Wide operating temperature range: Suitable for use in harsh industrial environments.
• RoHS compliant: Meets environmental regulations.

Additional Details:

The OXUPCI954-LQAG boasts a robust architecture and supports advanced features such as hardware and software flow control to ensure data integrity. This makes it ideal for demanding applications that require a high number of reliable, high-speed serial connections. The chip is typically supplied in a lead-free LQFP package. It requires a 3.3V power supply for operation. Consult the official Oxford Semiconductor datasheet for comprehensive specifications, including pinout information and register details.