User guide

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DS4830A User’s Guide

164

Run-Test/Idle

Select-DR-Scan

Capture-DR

Sh

ift-DR

Exit1-DR

Pause-DR

Exit2-DR

Shi

ft-

DR

Update-DR

Select-IR-Scan

Exit1-DR

Run-Test/Idle

Select-DR-S

can

Old Data

New Data

Data Register

Test-Lo

gi

c

-R

es

et

TCK

TMS

TDI

TDO

Control

State

Shift

Register

Parallel

Output

Instruction

Register

TDO

Enable

Don’t care or undefined

Don’t care or undefined

Don’t care or undefined

Figure 20-4: TAP Controller Debug Mode DR-Scan Example