19
19-13
Ver.0.10
JTAG
19.4 Basic Operation of JTAG
Figure 19.4.5 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)
Summary of Contents for M32170F3VFP
Page 42: ...1 1 24 Ver 0 10 OVERVIEW 1 4 Pin Layout This is a blank page ...
Page 56: ...2 2 14 Ver 0 10 This is a blank page ...
Page 88: ...3 3 32 Ver 0 10 ADDRESS SPACE 3 7 Notes on Address Space This is a blank page ...
Page 270: ...9 9 40 Ver 0 10 DMAC 9 4 Precautions about the DMAC This is a blank page ...
Page 614: ...12 12 64 Ver 0 10 This is a blank page SERIAL I O 12 9 Precautions on Using UART Mode ...
Page 756: ...17 17 10 Ver 0 10 RAM BACKUP MODE 17 4 Exiting RAM Backup Mode Wakeup This is a blank page ...
Page 762: ...18 18 6 Ver 0 10 OSCILLATION CIRCUIT 18 2 Clock Generator Circuit This is a blank page ...
Page 831: ...CHAPTER 22 CHAPTER 22 TYPICAL CHARACTERISTICS 22 1 A D Conversion Characteristics ...
Page 833: ...Appendix 1 1 Dimensional Outline Drawing APPENDIX 1 APPENDIX 1 MECHANICAL SPECIFICATIONS ...
Page 841: ...Appendix 3 1 Precautions about Noise APPENDIX 3 APPENDIX 3 PRECAUTIONS ABOUT NOISE ...