In-system Programming Clamp State

Allows you to specify the state that the pins take during in-system programming for used pins that do not have an in-system programming clamp state assignment. Unused pins and dedicated inputs must always be tri-stated for in-system programming. Used pins are tri-stated by default during in-system programming, which electrically isolates the device from other devices on the board. At times, however, in order to prevent system damage you may want to specify the logic level for used pins during in-system programming. This option is available for MAXII devices only. The following settings are available:

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Setting	I/O Pin State
Tri-state	The pins are tri-stated.
High	The pins drive `VCCIO.`
Low	The pins drive `GND`.
Sample and Sustain	The pins drive the level captured during the `SAMPLE/PRELOAD` JTAG instruction.