3.3.4. User output bits dialog

The user output bits correspond to two TTL logic-level outputs available from the user I/O connector (see Appendix G User I/O Connections). You can use these signals to remotely control user logic at the server location.

You access the User Output Bits dialog shown in Figure 3.13 from the Settings menu.

Figure 3.13. The User Output Bits dialog

The User Output Bits dialog


The state of the user output bits changes as soon as you click on them. You do not have to click on OK for the changes to take effect.

The dialog box contains the following items:

Set Low

Turns the bit permanently LOW.

Set High

Turns the bit permanently HIGH.

Set by Debugger/Driver

Enables the output bits to be controlled by either:

  • the TAPOp procedure calls TAPOp_WriteMICEUser1 and TAPOp_WriteMICEUser2, described in the Multi-ICE TAPOp API Reference Guide

  • the debugger internal variables output_bit_1 and output_bit_2, described in Internal variable descriptions.

Set on Download

Sets bit 1 HIGH while a debugger is downloading to the specified TAP controller.

Set on Go

Sets bit 2 HIGH while a debugger is executing an image file on the specified TAP controller.

You can select the TAP controller to use with the user output bits by selecting its number from the Tap Position drop-down box. All configured TAP controllers are listed.

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