AP-630 Designing for On-Board Programming Using the IEEE 1149.1 (JTAG) Access Port

This document provides information on an alternative OBP method for small form factor PCB applications. You will learn about using the Joint Test Action Group Test Access Port (JTAG TAP) to perform OBP. This application note provides details about the following topics:

· What is JTAG?
· Why use the JTAG TAP to program flash memory?
· JTAG programming performance
· Design considerations
· Programming strategies
· Vendor references

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