JTAG/IEEE 1149.1 Design Considerations

Texas Instruments

Published Date: 11/01/1996

Description

Using surface-mount packages double-sided boards and multi-chip modules in board design results in the loss of physical access to the signals on these boards. JTAG or boundary scan provides a means of testing printed circuit boards and modules that might otherwise be untestable. This documents is a brief introduction to TI JTAG and its documentation. The basics of boundary scan are discussed.