VXI SM7100 user manual Open Trigger Select Register 0x36 -Write Only, Loop Enable, Trace Enable

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Open Trigger Select Register (0x36) —Write Only

D15-D8

D7-D0

Sets the TTLTRIG line or lines, which are configures as outputs, and will toggle when Relay Open condition occurs in the module. D15 corresponds to TTLTRIG7, D14 to TTLTRIG6, … and D8 to TTLTRIG0. Setting a bit to a 1 enables the trigger line, setting a bit to 0 disables the corresponding line. All bits are set to 0 when either a soft or a hard reset is received by the module.

Sets the TTLTRIG line or lines, which are configured as inputs, and will cause a Relay Open event to occur in the module. D7 corresponds to TTLTRIG7, D6 to TTLTRIG6, … and D0 to TTLTRIG0. Setting a bit to a 1 enables the trigger line, setting a bit to 0 disables the corresponding line. All enabled TTLTRIG lines are OR'd together to allow more than one TTLTRIG line to cause a Relay Open event to occur. All bits are set to 0 when the module receives either a soft or a hard reset.

TTL Trigger Polarity Register (0x38) —Write Only

D15-D9	Unused	Data written to these bits have no effect.
D8	FAIL LED Control	0 = off
		1 = on
D4	Board Busy Trigger	0 acts on the falling edge, 1 acts on the rising edge.
	Slope
D3	Relay Open Input Slope	0 acts on the falling edge, 1 acts on the rising edge.
D2	Relay Open Output	0 sets the falling edge active, 1 sets the rising edge active.
	Slope
D1	Trace Advance Input	0 advances on the falling edge, 1 advances on the rising edge.
	Slope
D0	Trace Advance Output	0 sets the falling edge active, 1 sets the rising edge active.
	Slope

Note: A hard or a soft reset sets D3 - D0 to 0.

Trace RAM Control Register (0x3A) — Read and Write

D15-D11	Unused	Data written to these bits have no effect.
		Set to 0 if the module is installed or set to a 1 if not installed. These
D15-D10	Modules Installed	bits are set to 0 at power on. By setting a 1, the SMIP II Interface PCB
		will generate DTACK for any read or write cycles to the memory
		space of the uninstalled plug-in module.
D9-D5	Unused	Data written to these bits have no effect.
D4	Modules used in trace	D9 is for module 5, D4 is for module 0. Set to 1 if the module is used
	mode	in trace mode, set to 0 if not in trace mode.
D3-D2	Unused	Data written to these bits have no effect. The value written is read
		back.
		1 = Enabled, 0 = Disabled. If enabled, the trace resumes at the start of
D1	LOOP ENABLE	active RAM and continues from there. If disabled, the trace stops at
		the end of active RAM and clears the TRACE ENABLE bit.
D0	TRACE ENABLE	1 = enabled, 0 = disabled. If the LOOP ENABLE bit is set and the end
		of active trace RAM is reached, this bit will not be reset.

SM7100 Programming 27