21
21-13
Rev.1.0
JTAG
21.4 Basic Operation of the JTAG
Figure 21.4.5 Continuous JTAG Access
Note 1 : The setup value for each register must be entered from the JTDI pin beginning with the LSB.
Note 2 : The value of each register is output from the JTDO pin beginning with the LSB. The JTDO pin
outputs valid data in only "Shift-IR" state of IR path sequence and "Shift-DR" state of DR path
sequence. In all other states, the JTDO pin is tristated (high impedance).
Note 3 : Data can only be read out from the data register which is selected by the instruction that was
set in the immediately preceding IR path sequence. Output in the selected data register's shift
register stage is the value that was sampled during "Capture-DR" state.
Specify the data register
you want to inspect or set.
Test-Logic-
Reset state
Run-Test
/Idle state
IR path
sequence
TAP
states
Instruction
code
#0
Setup data
#0
JTDI
(Note 1)
Fixed
value
b'110001
(Note 3)
JTDO
(Note 2)
Setup data is entered serially from JTDI.
Reference data is serially output from JTDO.
(1) Basic access
Same data register can be operated
on to inspect or set data continuously.
(2) Continuous access to the same data register
Specify the data register
you want to inspect or set.
DR path
sequence
Run-Test
/Idle state
IR path
sequence
DR path
sequence
Instruction
code
#1
Setup data
#1
Fixed
value
b'110001
(Note 3)
Test-Logic-
Reset state
Run-Test
/Idle state
IR path
sequence
TAP
states
Instruction
code
#0
Setup data
#0
JTDI
(Note 1)
Fixed
value
b'110001
(Note 3)
JTDO
(Note 2)
DR path
sequence
Run-Test
/Idle state
IR path
sequence
DR path
sequence
Setup data
#2
(Note 3)
Setup data
#1
(Note 3)
Содержание 32172
Страница 20: ... This is a blank page 16 ...
Страница 21: ...1 1 Overview 1 2 Block Diagram 1 3 Pin Functions 1 4 Pin Layout CHAPTER 1 CHAPTER 1 OVERVIEW ...
Страница 44: ...1 1 24 Rev 1 0 This is a blank page Overview 1 4 Pin Layout ...
Страница 58: ...2 2 14 Rev 1 0 This is a blank page CPU 2 6 Data Formats ...
Страница 122: ...4 4 26 Rev 1 0 This is a blank page EIT 4 13 Precautions on EIT ...
Страница 200: ...7 7 6 Rev 1 0 This is a blank page RESET 7 4 Precautions to Be Taken Immediately after Reset ...
Страница 240: ...8 8 40 Rev 1 0 This is a blank page INPUT OUTPUT PORTS AND PIN FUNCTIONS 8 5 Precautions on Input Output Ports ...
Страница 298: ...9 9 58 Rev 1 0 This is a blank page DMAC 9 4 Precautions on Using DMAC ...
Страница 416: ...10 10 118 Rev 1 0 This is a blank page INPUT OUTPUT TIMERS 10 6 TOM Output Related 16 bit Timers ...
Страница 658: ...14 14 16 Rev 1 0 REAL TIME DEBUGGER RTD 14 4 Typical Connection with the Host This is a blank page ...
Страница 718: ...16 16 16 Rev 1 0 This is a blank page D A CONVERTERS 16 3 Functional Description of the D A Converters ...
Страница 766: ...18 18 22 Rev 1 0 WAIT CONTROLLER 18 3 Typical Operation of the Wait Controller This is a blank page ...
Страница 776: ...19 19 10 Rev 1 0 RAM BACKUP MODE 19 4 Exiting RAM Backup Mode Wakeup This is a blank page ...
Страница 777: ...CHAPTER 20 CHAPTER 20 OSCILLATION CIRCUIT 20 1 Oscillator Circuit 20 2 Clock Generator Circuit ...
Страница 782: ...20 20 6 Rev 1 0 OSCILLATION CIRCUIT 20 2 Clock Generator Circuit This is a blank page ...
Страница 856: ...23 23 26 Rev 1 0 This is a blank page ELECTRICAL CHARACTERISTICS 23 6 AC Characteristics ...
Страница 857: ...24 1 A D Conversion Characteristics CHAPTER 24 CHAPTER 24 STANDARD CHARACTERISTICS ...
Страница 859: ...Appendix 1 1 Dimensional Outline Drawing APPENDIX 1 APPENDIX 1 MECHANICAL SPECIFICATIONS ...
Страница 861: ...Appendix 2 1 M32R E Instruction Processing Time APPENDIX 2 APPENDIX 2 INSTRUCTION PROCESSING TIME ...
Страница 865: ...Appendix 3 1 Precautions about Noise APPENDIX 3 APPENDIX 3 PRECAUTIONS ABOUT NOISE ...