The PLX OX16C954-PLBG is a quad universal asynchronous receiver/transmitter (UART) with a parallel interface. It is designed to provide four independent serial communication channels from a single device. UARTs are essential components in embedded systems and computer systems for enabling serial data communication with peripherals and other devices. The '954 series UARTs are known for their enhanced features and reliability compared to older UART designs.

Applications

• Serial communication in embedded systems
• Industrial automation
• Data acquisition systems
• Point-of-sale (POS) systems
• Networking equipment
• Multi-port serial cards

Features

• Four independent UART channels
• Parallel host interface
• Programmable baud rate generator
• 16-byte transmit and receive FIFOs (First-In, First-Out buffers) per channel
• Automatic hardware and software flow control
• Modem control signals
• Interrupt generation

Benefits

• Increased serial communication capacity: The four UART channels allow for simultaneous communication with multiple devices.
• Simplified system integration: The parallel host interface simplifies integration with microprocessors and microcontrollers.
• Flexible baud rate selection: The programmable baud rate generator allows for communication at various speeds.
• Reduced CPU overhead: The 16-byte FIFOs reduce CPU intervention by buffering data.
• Reliable data transmission: Automatic flow control prevents data loss due to buffer overflow.
• Modem support: Modem control signals enable communication with modems.
• Efficient interrupt handling: Interrupt generation allows the CPU to be notified of important events.

Additional Details

The OX16C954-PLBG is typically interfaced to a host processor via a parallel data bus and control signals. Each UART channel can be independently configured for various serial communication parameters, such as baud rate, data bits, parity, and stop bits. The FIFOs help to reduce the number of interrupts generated by the UART, improving system performance. Hardware flow control uses RTS/CTS signals to prevent buffer overflow, while software flow control uses XON/XOFF characters. The modem control signals include DTR, DSR, RI, and CD. It operates typically from 3.3V or 5V supply.

Always refer to the official datasheet for the most accurate and up-to-date specifications and application guidelines.