You're reading from The FPGA Programming Handbook An essential guide to FPGA design for transforming ideas into hardware using SystemVerilog and VHDL

Product type Paperback

Published in Apr 2024

Publisher Packt

ISBN-13 9781805125594

Length 550 pages

Edition 2nd Edition

Languages

C++

Tools

FPGA

Concepts

Embedded Systems

Authors (2):

Guy Eschemann

Frank Bruno

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Table of Contents (17) Chapters

Preface

1. Introduction to FPGA Architectures FREE CHAPTER

2. FPGA Programming Languages and Tools

3. Combinational Logic

4. Counting Button Presses

5. Let’s Build a Calculator

6. FPGA Resources and How to Use Them

7. Math, Parallelism, and Pipelined Design

8. Introduction to AXI

9. Lots of Data? MIG and DDR2

10. A Better Way to Display – VGA

11. Bringing It All Together

12. Using the PMOD Connectors – SPI and UART

13. Embedded Microcontrollers Using the Xilinx MicroBlaze

14. Advanced Topics

15. Other Books You May Enjoy

16. Index

Understanding Peripheral Modules (PMODs)

Digilent introduced the PMOD connector as a way to provide a standardized interface for its development boards. The goal of the PMOD specification is to allow the development of lower-speed daughter cards, such as I2C, SPI, UART, and General-Purpose Input/Output (GPIO) peripherals. The standard is open and has been adopted by multiple companies both for their development boards and to provide different PMODs for developers.

PMOD connectors primarily provide low-speed connections of a predefined type. In practice, the power connections are the only pins that are constant, and the others could be used for any signaling up to about 100MHz operation, even though this would technically be beyond the original spec.

From the Nexys A7 perspective, four of the PMODs connect to GPIO and the fifth is dual-purpose analog/digital.

...

Pin

PMOD JA

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Table of Contents (17) Chapters