Agilent Technologies C-Size VXIbus Systems Manual de usuario

Agilent 75000 SERIES CAgilent E1490CC-Size VXIbus Register-BasedBreadboard ModuleUser’s Manual*E1490-90004*Manual Part Number E1490-90004Printed in Ma

Agilent E1490C DescriptionThe Agilent E1490C Breadboard Module is a C-size register-based devicethat provides a convenient interface to a VXI mainfram

Figure 1-1. Digital Backplane Interface Block DiagramChapter 1 Introduction 9

• Status Register. Reading this 16-bit register provides informationabout the status of the breadboard module. Implemented signals are"A24/A32

Agilent E1490CHardware FeaturesAn overview of the Agilent E1490C hardware features follows. • Connectors. A 96-pin DIN connector connects to the term

Notes12 Introduction Chapter 1

Chapter 2Configuring the Agilent E1490CThis chapter contains a detailed hardware description of the breadboard moduleand discusses the backplane inte

Reducing Risk ofStatic DischargeDamageThe smallest static voltage most people can feel is about 3500 V. It takesless than one-tenth of that (about 30

Figure 2-1. Agilent E1490C Breadboard ModuleChapter 2 Configuring the Agilent E1490C 15

BackplaneConnectionsThe breadboard module allows you to interface your custom circuits to anystandard C-size VXIbus backplane (connectors P1 and P2).

Terminal ModuleConnectionsFigure 2-1 also shows the user connections and the terminal module. Referto pages 29 and 30 before attempting to wire the t

Figure 2-3. Agilent E1490C Top Shield DimensionsFigure 2-4. Agilent E1490C Bottom Shield Dimensions18 Configuring the Agilent E1490C Chapter 2

Location Qty. Part Number DescriptionA1 1 E1490-66511 PC Breadboard AssemblyMP1 1 E1400-45101 Top Extraction LeverMP2 1 E1400-45102 Bottom Extraction

Metal Standoffs Metal standoffs (not provided with the module) can be installed to increasethe maximum component height above the printed circuit boar

In Figure 2-9 the standoffs are installed between the PC board and the topshield. The 30 mm hex standoff shown may also be ordered from theaddress sh

Cooling RequirementsThe VXIbus System Specification requires module manufacturers toestablish a cooling specification for each of their modules. Thes

Setting the Logical Address SwitchThe logical address switch (LADDR) factory setting is 232. Valid addressesare from 1 to 255. Refer to Figure 2-12

Setting the Interrupt PriorityFor most applications where the breadboard module is installed in anAgilent 75000 Series C mainframe, the interrupt prio

Installing the Breadboard in a MainframeRefer to Figure 2-14 to install the breadboard in a mainframe.Set the extraction levers out.Slide the Agilent

Terminal ModulesThe Agilent E1490C Breadboard Module is comprised of a component PCboard and a screw-type standard terminal module. If the screw-type

Terminal ModuleOption A3EOption A3E can be ordered if a crimp-and-insert terminal module is desired.This allows you to crimp connectors onto wires whi

ContentsAgilent E1490C User’s ManualWarranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Jumper Wire andContactsA crimp-and-insert contact is crimped onto each end of a single conductorjumper wire. This jumper is typically used to tie two

Wiring a Terminal ModuleThe following illustrations show how to connect field wiring to the terminalmodule.Remove Clear CoverRemove and Retain Wiring

Replace Clear CoverReplace Wiring Exit Panel(s)Install the Terminal Module Push in the Extraction Levers to Lock theTerminal Module onto the Breadboar

Attaching a Terminal Module to the BreadboardExtend the extraction levers on theAlign the terminal module connectors to the Agilent E1490C breadboard

Backplane Interface CircuitryThe backplane interface circuitry allows you to access the backplane controlsignals, data lines, address lines, trigger b

Figure 2-19. Address Lines and Register DecodingChapter 2 Configuring the Agilent E1490C 33

Either of the two address modifier hexadecimal codes indicated above willestablish A16 addressing per the VXIbus System Specification (SectionC.2.1.1.

Data Bus Drivers The Agilent E1490C breadboard module is designed to be used as an A16 anda D16 device only. As such, only backplane address lines A1

Status Register The 16-bit Status Register (Figure 2-21) provides specific status informationdefined by the VXIbus System Specification, and has other

ID Register The ID Register is a 16-bit register which identifies the module’smanufacturer, addressing mode, and classification. These identification

Chapter 2. Configuring the Agilent E1490C (continued)Device Type Register . . . . . . . . . . . . . . . . . . . . . . . . .

Each bit in the ID Register is normally pulled high (1) by RP5 and RP6.The bits can be reconfigured low by closing the appropriate switch (SP2 andSP3)

See Chapter 3 for additional information on using the Device Type Register.Refer to the VXIbus System Specification, Section C.2.1.1.2 for detailedinf

Control Register The Control Register is a 16-bit register which, when written to from thebackplane data bus, causes specific actions to be executed b

Table 2-8. Control Register Bit DefinitionsData Bit(s) Definitions CR0 (1 = Reset the module, User defines reset actions) CR1 (1 = inhibit setting

If the data transfer cycle is a write operation (as indicated by WRITE* true), anadditional state sets the U9 LATCH output low (enabling the Control R

Interrupt A priority interrupt scheme has been implemented using the PAL (U9).Another state machine within the PAL controls interrupt request andackno

If its own level is not being acknowledged, or if the module is not assertingIRQ, the state machine passes the daisy-chained IACKIN* signal throughIAC

ECL Trigger Logic Figure 2-27 shows the ECL Trigger Circuitry. The ECLTRG lines providean intermodule timing resource. Any module, including the Slo

User Access Points The breadboard module contains traces (stubs) for accessing many of thesignal lines on backplane connectors P1 and P2. Table 2-10

Power Supplies Table 2-12 lists the power supply pins available from the P1 and P2 connectors.The + 5 and – 5.2 Vdc interface supplies are fused and f

CertificationAgilent Technologies certifies that this product met its published specifications at the time of shipment from the factory. AgilentTechn

Since this is a write operation, LATCH* goes true for one clock cycle as part ofthe data transfer cycle. With both BASE + 8 and LATCH* set low, the o

FROM AGILENT TECHNOLOGIES.Configuring the Agilent E1490C 49

Chapter 3Using the Agilent E1490CThis chapter shows how to use the backplane interface circuitry on theAgilent E1490C Breadboard Module. This chapte

Reading the StatusRegisterFor example, assume you need to use up to 16-bits of the Status Register,including latching the data in both halves of the r

Reading ID andDevice TypeRegistersThe procedure to read the ID and Device Type Registers is the same as thatfor the Status Register with two exception

Writing Data to the Control RegisterThe breadboard module contains circuitry for a Control Register. You canwrite to this register from the backplane

Writing to theControl RegisterTo write to the Control Register from the backplane data lines, you mustimplement the following signal and control lines

Figure 3-4. Timing for Writing to the Control Register56 Using the Agilent E1490C Chapter 3

Using InterruptsThe breadboard module can be configured to generate an interrupt to theinterrupt handler when service is required.Configuring forInter

Frame or chassis ground terminal—typicallyconnects to the equipment’s metal frame.Alternating current (AC).Direct current (DC). Indicates hazardous vo

Figure 3-5. Interrupt Timing58 Using the Agilent E1490C Chapter 3

Resetting the ModuleA reset signal is provided to initialize the backplane interface circuit andyour own custom-designed circuitry to a known state.

Using Other Power SuppliesYou can use any of the other power supply voltages from a standardVXIbus backplane as described in the VXIbus Specification.

Example ProgramsThis section shows example programs to read the ID and Device TypeRegisters and write to the Control Register.Reading theRegistersThe

Reading/Writing toCustom RegistersAs you add your own custom registers to the breadboard, use the REG0*through REG4* enable lines. These lines addres

Appendix AAgilent E1490C Breadboard Specifications Agilent E1490C Breadboard module specifications follow. Item SpecificationUser Component Area 490

Notes64 Agilent E1490C Breadboard Specifications Appendix A

Appendix BAgilent E1490C Parts List,Component Locator, and SchematicsTable B-1 lists the Agilent E1490C backplane interface circuitrycomponents. See

Table B-1. Agilent E1490C Breadboard Parts List (continued from previous page)ReferenceDesignatorAgilentPartNumberTotal Qty. Description Mfr. Code Mfr

E1490-66511 Component Locator (Rev. D)Appendix B Agilent E1490C Schematics 67

NotesAgilent E1490C C-Sized VXIbus Register-Based Breadboard Module User’s Manual 5

Appendix B Agilent E1490C Schematics 68

Appendix B Agilent E1490C Schematics 69

Appendix B Agilent E1490C Schematics 70

Appendix B Agilent E1490C Schematics 71

IndexAgilent E1490C User’s ManualAAccess Pointscontrol register, 54status register, 52ACKADDR, 43Addressdecode circuitry, 35lines, 8, 32lines, backpl

Notes6 Agilent E1490C C-Sized VXIbus Register-Based Breadboard Module User’s Manual

C (continued)Control Signals, 44Cooling Requirements, 22CRESET*, 44, 59access point, 59Crimp-and-Insertaccessories, 27connectors, 28contacts, 27 - 28o

I (continued)Interruptcircuitry, 43configuring for, 57interface, 10priority, 10, 24, 43, 57request levels, 43, 57requests, generating, 57using, 57Inve

S (continued)Status Register (continued)reading, 10, 36, 52timing for reading, 53STATUS*, 36, 40Stubs, 46SYSCLK, 40 - 41, 44SYSFAIL INHBT, 44SYSFAIL*,

Chapter 1IntroductionManual ContentsThis manual has three chapters and two appendixes: • Chapter 1 - Introduction summarizes manual contents, warrant