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VXI SM7100, Microwave Matrix user manual Programming, Section, Register Access, Addressing

Models: SM7100 Microwave Matrix

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PROGRAMMING

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SECTION 4

PROGRAMMING

REGISTER ACCESS

The SMIP II modules are VXIbus register-based devices for high-speed data transfers. Register- based programming is a series of reads and writes directly to the switch module registers. This eliminates the time for command parsing thus increasing speed.

ADDRESSING

The VTI switching modules utilize either the A24 or A32 space of the shared-memory architecture. To read or write to a module register, a register address needs to be specified. This is done by using the offset value (assigned by the resource manager) and multiplying it by 256 or 64 k to get the base address in A24 or A32 address space, respectively

A24 Base Address = Offset value * 0x0100 (or 256)

A32 Base Address = Offset value * 0x10000 (or 65,536)

The A24 or A32 offset value, assigned by the resource manager, can also be accessed by reading the A16 Offset Register. To address the A16 Offset Register use the following formula:

A16 Base Address = (Logical Address * 64) + 0xC000 (or 49,152)

then

A16 Offset Register Address = A16 Base Address + 6

See Table 4-1for A16 Memory Map and A24/A32 address space allocation.

SM7100 Programming

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VXI SM7100, Microwave Matrix user manual Programming, Section, Register Access, Addressing

Contents

2031 Main Street Irvine, CA 949 P/N: Released February 13, VXI Technology, IncSM7100 MICROWAVE MATRIX USER’S MANUALVXI Technology, Inc SECTION TABLE OF CONTENTSSECTION SECTIONLIMITATION OF WARRANTY WARRANTYCERTIFICATION RESTRICTED RIGHTS LEGENDVXI Technology, Inc D E C L A R A T I O N O F C O N F O R M I T Y2031 Main Street Irvine, CaliforniaTERMS AND SYMBOLS GENERAL SAFETY INSTRUCTIONSUse Proper Power Cord Use Proper Power SourceAvoid Electric Shock WARNINGS CONTGround the Product Operating ConditionsVXI Technology World Headquarters SUPPORT RESOURCESVXI Technology Cleveland Instrument Division VXI Technology Lake Stevens Instrument DivisionINTRODUCTION SECTIONSM7100 SPECIFICATIONS CALCULATING SYSTEM POWER AND COOLING REQUIREMENTS PREPARATION FOR USESETTING THE CHASSIS BACKPLANE JUMPERS SECTIONFRONT BACKFRONT BACKSM7100 Preparation for Use VXI Technology, IncSWITCH CONFIGURATION SECTIONFRONT PANEL CONNECTION - SM7000 VXI Technology, Inc SM7100 Module Configuration INPUTS FIGURE 3-4:SM7100 MATRIX SCHEMATICEXPANSION INPUTS EXPANSION OUTPUTSOffset VXI Technology, Inc SM7100 Module ConfigurationREGISTER ACCESS PROGRAMMINGSECTION ADDRESSINGOFFSET TABLE 4-1:SMIP II REGISTER MAP - A16WRITE FUNCTION READ FUNCTIONLogical Address Register 0x00 — Write Only ID Register 0x00 — Read OnlyDevice Type Register 0x02 — Read Only Status Register 0x04 — Read OnlyReserved Register 0x0A — Read Only Offset Register 0x06 — Read and WriteReserved Register 0x0C — Read Only Version Number Register 0x0E — Read OnlyNVM Access Resister 0x20 — Write Only NVM Access Resister 0x20 — Read OnlyInterrupt Control Register 0x1C — Read and Write Subclass Register 0x1E — Read OnlyTrace RAM End High Register 0x2C — Read and Write Trace RAM End Low Register 0x2E — Read and WriteTrace RAM Start Low Register 0x2A — Read and Write Open Trigger Select Register 0x36 —WriteOnly TTL Trigger Polarity Register 0x38 —WriteOnlyTrace RAM Control Register 0x3A — Read and Write Trigger Advance Register 0x3E — Write Only Board Busy Register 0x3E — Read OnlyReserved Registers — Read and Write ADDR Control Register - Read and WriteControl Register - Read and Write continued Control Register - Read and Write continued Status Register - Read Only Delay Register - Read and WriteDEVICE MEMORY MAP RELAY REGISTER OFFSETWRITING TO THE RELAYS VXI Technology, Inc INDEX SM7100 VXI Technology, IncVXIbus Extended Device WEEE