AT697F Datasheet, PDF (69/155 Pages) ATMEL Corporation – Rad-Hard 32 bit SPARC V8 Processor

AT697F ADVANCE INFORMATION
Figure 44. TAP - State Machine
1 Test Logic Reset
0
1
0 Run Test/Idle
1
Select DR Scan
0
1
Capture DR^[1]
0
Transitions between
states are controlled
by TMS input value.
Shift DR
0
1
1
Exit_1 DR
0
Pause DR
0
1
0
Exit_2 DR
1
Update DR^[1]
10
1
Select IR Scan
0
1
Capture IR
0
Shift IR
0
1
1
Exit_1 IR
0
Pause IR
0
1
0
Exit_2 IR
1
Update IR
10
Due to the scan cell layout, "Capture DR" and "Update DR" are states without associated action
during the scanning of internal chains.
TAP Instructions
The following instruction are supported by the AT697 TAP.
Table 25. TAP instruction set
Binary Value Instruction Name
000
EXTEST
001
SAMPLE/PRELOAD
010
BYPASS
111
IDCODE
Data Register
Boundary scan register
Boundary scan register
Bypass register
Device id register
Scan Chain Accessed
Boundary scan chain
Boundary scan chain
Bypassscan chain
ID register scan chain
BYPASS
EXTEST
This instruction is binary coded "010"
It is used to speed up shifting at board level through components that are not to be activated.
This instruction is binary coded "000"
69
7703C–AERO–6/09