UARTmodule
Universal Asynchronous Receiver/Transmitter Module
The UARTmodule is part of Inicore's IPmodule family. Universal asynchronous receiver and transmitter, using the RS232 protocol, are often used to connect peripheral devices to a central controller.
The UARTmodule has one receive and one transmit channel, receive and transmit buffers, an interrupt controller as well as a local bus interface. The built-in receive buffer is configurable in depth, therefore, enabling a gate count and application optimized implementation.
The baudrate generator uses a innovative digital controlled oscillator (DCO) to generate baudrates over a wide frequency range. With a system clock of 8MHz, all baudrates from 1200 baud to 115.2 kbaud have an accuracy of better than 0.1%!
To improve glitch rejection, the receiver uses a 3-point input sampling. Format and parity errors are detected and reported.
Block Diagram
Features
- Single channel UART
- Flexible baudrate generator
- Status and error registers
- Scalable RxFIFO (2/4/8/16 bytes deep)
- Double buffered TxFIFO
- 7-bit or 8-bit format
- 1 or 2 stopbits
- Parity enable, even or odd
- Receive timeout counter
- Local loop back mode
- Local interrupt controller
- Industry standard AMBA APB host interface
- Full synchronous design
- Technology independent, vendor independent
Implementation Features
- Supports register and SRAM based FIFO implementations.
- The Rx-FIFO size is selectable enabling the optimal device utilization
- Fully synchronous design: one clock, one global asynchronous reset.
- Technology independent implementation. This design can be used for any technology as long as timing constraints are met.
Deliverables
- VHDL source code
- Simulation testbench
- Timing constraints file
- Synthesis script
- User Guide
Datasheet
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