5.32.17.1 I/O State (Output Only)

Sets your I/O states during programming to one of the values shown in the list below.

  • 1 – I/Os are set to drive out logic High
  • 0 – I/Os are set to drive out logic Low
    • Last Known State: I/Os are set to the last value that was driven out prior to entering the programming mode, and then held at that value during programming
  • Z - Tri-State: I/Os are tristated

When you set your I/O state, the Boundary Scan Register cells are set according to the table below. Use the Show BSR Details option to set custom states for each cell.

Table 5-79. Default I/O Output Settings

Output State

Settings

Input

Control (Output Enable)

Output

Z (Tri-State)

1

0

0

0 (Low)

1

1

0

1 (High)

0

1

1

Output State

Settings

Input

Control (Output Enable)

Output

Last_Known_State

Last_Known_State

Last_Known_State

Last_Known_State

Table Key:

  • 1 – High: I/Os are set to drive out logic High
  • 0 – Low: I/Os are set to drive out logic Low
    • Last_Known_State - I/Os are set to the last value that was driven out prior to entering the programming mode, and then held at that value during programming