VXI SM7100, Microwave Matrix user manual Control Register Read and Write

Page 31

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Control Register - Read and Write (continued)

0= Non-inverted Front Panel Open signal polarity

1= Inverted Front Panel Open signal polarity Pon state = 0

 

Front Panel

Non-inverted: If set in pulse mode, the Front Panel Open signal will generate a

D1

Open

reset pulse on a falling edge. If set in level mode, the Front Panel Open signal will

Signal

 

generate a reset signal on a low input signal.

 

Polarity Bit

 

 

 

 

Inverted: If set in pulse mode, the Front Panel Open signal will generate a reset

 

 

pulse on a rising edge. If set in level mode, the Front Panel Open signal will

 

 

generate a reset signal on a high input signal.

 

 

0 = Pulse mode

 

 

1 = Level mode

 

 

Pon state = 0

 

 

Pulse mode: An edge seen at the Front Panel Open signal pin will generate a reset

 

 

pulse that may be used to reset system relays. The pulse is of approximately 300 ns

 

 

duration.

 

 

Level mode: A level present on the Front Panel Open signal pin will generate a

 

Front Panel

reset signal that may be used to reset system relays. This signal will remain active

 

as long as the input is active.

D0

Open

On the front panel of most SMIP II plug-in modules, there are two pins for access

Signal

 

Operation

to the Front Panel Open signal of the module. These are the Front Panel Open

 

Select Bit

signal pin and a ground reference pin. The purpose of the Front Panel Open signal

 

 

is to allow user access to a configurable interlock feature that will reset all of the

 

 

SMIP II system relays. The Front Panel Open signal may be used to reset the relays

 

 

only on the module, which initiated the Front Panel Open signal fault condition. It

 

 

also may be used to broadcast to all the other SMIP II plug-in modules installed in

 

 

a SMIP II Interface Module via what is called the Openbus. Any plug-in module

 

 

may be programmed to drive and/or listen to the Openbus. The Openbus signal

 

 

may also be used to generate a wider chassis level fault signal via the TTL Trigger

 

 

Bus (see the register definitions for A16 address space). The Front Panel Open

 

 

signal is meant to be driven by either a switch closure or TTL/CMOS logic gate. It

 

 

is pulled high on the module.

SM7100 Programming

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Contents SM7100 VXI Technology, Inc Table of Contents Restricted Rights Legend WarrantyLimitation of Warranty CertificationEMC C L a R a T I O N O F C O N F O R M I T YTerms and Symbols General Safety InstructionsAvoid Electric Shock Support Resources Programming OverviewVswr SM7100 SpecificationsSMA Setting the Chassis Backplane Jumpers Calculating System Power and Cooling RequirementsIntroduction MSB LSB Setting the Logical AddressSelecting the Extended Memory Space VXI Technology, Inc SM7100 Preparation for Use Front Panel Connection SM7000 Switch ConfigurationGND EXTReturn GND SM7100 Module Configuration SM7100 Matrix Schematic Offset Hex VXI Technology, Inc SM7100 Module Configuration Addressing Register AccessOffset Write Function Smip II Register MAP A16Status Register 0x04 Read Only ID Register 0x00 Read OnlyLogical Address Register 0x00 Write Only Device Type Register 0x02 Read OnlyVersion Number Register 0x0E Read Only Offset Register 0x06 Read and WriteReserved Register 0x0A Read Only Reserved Register 0x0C Read OnlySubclass Register 0x1E Read Only NVM Access Resister 0x20 Read OnlyNVM Access Resister 0x20 Write Only Interrupt Control Register 0x1C Read and WriteTrace RAM End Low Register 0x2E Read and Write Trace RAM Start High Register 0x28 Read and WriteTrace RAM Start Low Register 0x2A Read and Write Trace RAM End High Register 0x2C Read and WriteTTL Trigger Polarity Register 0x38 -Write Only Loop EnableTrace Enable Open Trigger Select Register 0x36 -Write OnlyReserved Registers Read and Write Busy Trigger Control Register 0x3C Read and WriteTrigger Advance Register 0x3E Write Only Board Busy Register 0x3E Read OnlyAcfailn AddrBBM/MBB Control Register Read and Write Delay Register Read and Write Writing to the Relays Relay Register OffsetVIA16SPACE Index SM7100
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