Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD Ficha De Dados
Códigos do produto
AT32UC3A3-XPLD
946
32072H–AVR32–10/2012
AT32UC3A3
1.
Select the IR Scan path.
2.
In Capture-IR: The IR output value is latched into the shift register.
3.
In Shift-IR: The instruction register is shifted by the TCK input.
4.
Return to Run-Test/Idle.
5.
Select the DR Scan path.
6.
In Capture-DR: The Data on the external pins are sampled into the boundary-scan
chain.
chain.
7.
In Shift-DR: The boundary-scan chain is shifted by the TCK input.
8.
Return to Run-Test/Idle.
35.5.2.3
EXTEST
This instruction selects the boundary-scan chain as Data Register for testing circuitry external to
the 32-bit AVR package. The contents of the latched outputs of the boundary-scan chain is
driven out as soon as the JTAG IR-register is loaded with the EXTEST instruction.
the 32-bit AVR package. The contents of the latched outputs of the boundary-scan chain is
driven out as soon as the JTAG IR-register is loaded with the EXTEST instruction.
Starting in Run-Test/Idle, the EXTEST instruction is accessed the following way:
1.
Select the IR Scan path.
2.
In Capture-IR: The IR output value is latched into the shift register.
3.
In Shift-IR: The instruction register is shifted by the TCK input.
4.
In Update-IR: The data from the boundary-scan chain is applied to the output pins.
5.
Return to Run-Test/Idle.
6.
Select the DR Scan path.
7.
In Capture-DR: The data on the external pins is sampled into the boundary-scan chain.
8.
In Shift-DR: The boundary-scan chain is shifted by the TCK input.
9.
In Update-DR: The data from the scan chain is applied to the output pins.
10. Return to Run-Test/Idle.
Table 35-11. SAMPLE_PRELOAD Details
Instructions
Details
IR input value
00010 (0x02)
IR output value
p0001
DR Size
Depending on boundary-scan chain, see BSDL-file.
DR input value
Depending on boundary-scan chain, see BSDL-file.
DR output value
Depending on boundary-scan chain, see BSDL-file.
Table 35-12. EXTEST Details
Instructions
Details
IR input value
00011 (0x03)
IR output value
p0001
DR Size
Depending on boundary-scan chain, see BSDL-file.
DR input value
Depending on boundary-scan chain, see BSDL-file.
DR output value
Depending on boundary-scan chain, see BSDL-file.