General Description:
What happens to update latches and data/instruction registers of the boundary scan circuitry when the device enters the Test-Logic-Reset state? Are they set or reset?
When the device enters the Test-Logic-Reset state, the BYPASS instruction becomes the current instruction; hence, the instruction register and update latches are set (output High).
The 1-bit BYPASS register is selected by the BYPASS instruction. You may shift out the data in this register by performing the shift-DR instruction.
| AR# 2195 | |
|---|---|
| 日期 | 12/15/2012 |
| 状态 | Active |
| Type | 综合文章 |