ScholarLens Back to search
2008•Unpublished venueRequires access

Design and Implementation of a Single-Chip ARM-Based USB Interface JTAG Emulator

Xuhui Chen, Dengyi Zhang, Hongyun Yang

Open publisher page 8 citations

Abstract

Boundary-scan technology is a popular design-for-test technology, which is used by some embedded chips by means of embedding special boundary scan cells inside the circuits. It allows the debugger to talk via a JTAG port directly to the IC's core. As more and more chips using the JTAG interface, the application of JTAG emulator becomes frequent. Commercial JTAG emulators using parallel port on the market are usually expensive and inconvenience. This paper describes two methods to design an inexpensive USB interface JTAG emulator based on a single-chip ARM, including theirs hardware and software. One is the GPIO pins of an ARM device are used to generate TAP timing and its USB port is used to communicate with PC. Another is used the SPI interface to generate higher TCK. Result shows that this emulator not only has high speed but also is portable.

About this research paper

What this paper is about

Boundary-scan technology is a popular design-for-test technology, which is used by some embedded chips by means of embedding special boundary scan cells inside the circuits. It allows the debugger to talk via a JTAG port directly to the IC's core. As more and more chips using the JTAG interface, the application of JTAG emulator becomes frequent. Commercial JTAG emulators using parallel port on the market are usually expensive and inconvenience. This paper describes two methods to design an inexpensive USB interface JTAG emulator based on a single-chip ARM, including theirs hardware and software. One is the GPIO pins of an ARM device are used to generate TAP timing and its USB port is used to communicate with PC. Another is used the SPI interface to generate higher TCK. Result shows that this emulator not only has high speed but also is portable.

Why it matters

OpenAlex reports 8 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Boundary-scan technology is a popular design-for-test technology, which is used by some embedded chips by means of embedding special boundary scan cells inside the circuits. It allows the debugger to talk via a JTAG port directly to the IC's core. As more and more chips using the JTAG interface, the application of JTAG emulator becomes frequent. Commercial JTAG emulators using parallel port on the market are usually expensive and inconvenience. This paper describes two methods to design an inexpensive USB interface JTAG emulator based on a single-chip ARM, including theirs hardware and software. One is the GPIO pins of an ARM device are used to generate TAP timing and its USB port is used to communicate with PC. Another is used the SPI interface to generate higher TCK. Result shows that this emulator not only has high speed but also is portable.

Key concepts: USB, Embedded system, Interface (matter), Computer hardware, Debugger, Computer science, Parallel port, Port (circuit theory)

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
Design and Implementation of a Single-Chip ARM-Based USB Interface JTAG Emulator — Research Paper | ScholarLens