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C-Size VXIbus

FNAL Bucking Source Module 1002A

Installation and Operational Manual

RD Controls Special Project Note 15.0 Printed January 30, 1995

Contents

CHAPTER 1. 1-2

Getting Started 1-2

Introduction 1-2

Module Description 1-3

Modes of Operation 1-4

Measurement Mode 1-4

Test Mode 1-5

Adjustment Mode 1-5

Idle Mode 1-5

Module Reset 1-5

Channel Configuration 1-6

Hardware Components 1-8

CHAPTER 2. 2-1

Preparing a VXIbus Card for Installation 2-1

BSM-1002A Logical Address 2-1

Setting I/O Addresses (DT9110, (U19)) 2-2

ID Register (READ ONLY) 2-3

Device Class 2-3

Address Space 2-3

Manufacturer ID: 2-3

Device Type Register 2-3

Required Memory 2-4

Model Code 2-4

Installing the VXI Card 2-6

Installation and Removal 2-6

CHAPTER 3. 3-1

BSM-1002A Register-Based Addressing 3-1

About Register-Based Programming 3-2

Addressing the Registers 3-2

Manufacturer ID (Read) Register 3-5

Device Type ( Read) Register 3-5

I/O Status (Read) / Control (Write) Register 3-5

Channel 1 (Read / Write) Set Register 3-5

Channel 2 (Read / Write) Set Register 3-6

Channel 3 (Read / Write) Set Register 3-6

Channel 4 (Read / Write) Set Register 3-6

Channel 5 (Read / Write) Set Register 3-7

Channel 6 (Read / Write) Set Register 3-7

Channel 7 (Read / Write) Set Register 3-7

Channel 8 (Read / Write) Set Register 3-8

Channel 1 (Read / Write) Reset Register 3-8

Channel 2 (Read / Write) Reset Register 3-8

Channel 3 (Read / Write) Reset Register 3-9

Channel 4 (Read / Write) Reset Register 3-9

Channel 5 (Read / Write) Reset Register 3-9

Channel 6 (Read / Write) Reset Register 3-10

Channel 7 (Read / Write) Reset Register 3-10

Channel 8 (Read / Write) Reset Register 3-11

BSM Command (Read / Write) Register 3-11

Status (Read ) Register 3-11

Status Type (Read ) Register 3-11

Board Serial Number (Read) Register 3-11

Reading the Registers 3-13

ID and Device Type Register 3-13

I/O Status (Read) Register 3-14

Channel 1 through 8 Status (Read) Registers 3-15

BSM Command (Read) Register 1 3-16

Status (Read) Register 3-16

Status Type (Read) Register 3-17

BSM Board Serial Number (Read) Register 3-18

Interrupt Request 3-19

Writing to the Registers 3-19

I/O Control (Write) Register 3-20

BSM Command (Write) Register 3-20

Channel 1 through 8 (Write) Registers 3-21

Number of Boards Allowed 3-22

Serial Number 3-22

CHAPTER 4 4-1

Embedded Controller 4-1

APPENDIX A 1

Replaceable Parts 1

Channel Configuration and Control Schematics 3

EPLD Pin Out 16

Printed Circuit Board Modifications 17

Connector J1 Pinout 18

Table of

Figures and

Tables

Figure 1-1 Typical BSM, CCM configuration 1-4

Figure 1-2 Binary weighted resistor array channel 1-7

Figure 2-1 Logical Address 2-2

Figure 2-2 ID/Device Type Register Configuration 2-5

Figure 3-1 BSM-1002A Registers within A16 Address Space 3-2

Figure 3-2 BSM-1002A Registers within A24 Address Space 3-3

Figure 4-1 BSM-1002A Logic block diagram 4-2

Figure A-1 EPLD Pin Out for U20 Appendix A-1

Figure A-2 EPLD Pin Out for U25 Appendix A-2

Table 3-1 VXI Interface Card Address 3-3

Table 1-1 Basic Resistor Values Appendix A -3

Table A-1 Bucking J-1 pin out Appendix A-4

Chapter 1

Getting Started

Introduction

This manual is divided into four chapters and one appendix:

Chapter 1. Getting Started introduces the BSM-1002A C-Size VXIbus Bucking Source Module and describes the hardware components.

Chapter 2. Preparing a VXIbus card for Installation describes how to install the module in the VXI C-Size Crate, and describes the Logical and I/O Addressing of the module.

Chapter 3. BSM-1002A Register-Based Addressing describes addressing of the BSM-1002A module.

Chapter 4. Embedded Controller describes the module embedded controller.

Appendix A. Replaceable Parts list the parts and descriptions of replaceable parts for the BSM-1002A and provides schematic diagrams and EPLD logic diagrams.

Module

Description

Chapter Contents

This chapter describes the FNAL Bucking Source Module (BSM-1002A) 8 - channel binary -weighted 12-bit resistor array module.

· BSM-1002A description

· Modes of operation

· Module reset

· Channel configuration

BSM-1002A Module

Description

The BSM-1002A module is a register-based VXIbus C-size card that contains eight (8) binary-weighted latched 12-bit resistor array channels. Each resistor in the array has a tolerance of 1% and a temperature coefficient of ± 50ppm/°C. Each channel has a maximum input voltage of ±10 Volts.

Each of the BSM-1002A channels has two multiplexed outputs; module select and output select. Module select gives the user the capability of selecting a particular CCM-1001A module in the system for any given BSM-1002A channel (for information on CCM-1001A , refer to - RD Controls Special Project Note 14.0). The user can also select which output, OC1 or OC2 in the CCM-1001A module the binary weighted 12-bit resistor array are attached to. Figure 1-1 shows a typical BSM-1002A and CCM-1001A configuration.

Figure 1-1.Typical BSM, CCM configuration

Modes of Operation

The BSM-1002A module has four Modes of operation:

· Measurement Mode

· Test Mode

· Adjustment Mode

· Idle Mode

Measurement Mode

Measurement Mode is set by the host computer after all channels have been configured in IDLE Mode and the magnet measurement system is ready to take data. The front panel push button is disabled in this mode so the module cannot be reset during data collection.

Test Mode

Test Mode is set by the host computer to test all relay drivers. This function is accomplished by placing a test code on the internal bus with a value of 5555h and AAAAh. This is sent to all relay driver, set and reset registers. The driver registers are then read back and compared with the code that was sent. If the return code doesn’t match, bit-1 (Error) of the Status register is then set to one (1) indicating a module Error. At the same time bit-2 (Test Error) of the STATUS TYPE register is set to one (1) to inform the user that an error has occurred during Test Mode, and the address of the relay driver register that fails to match is then placed into the STATUS TYPE register bit’s 3 through 6. The front panel push button is disabled in this mode so the module cannot be reset during relay driver testing.

Adjustment Mode

Adjustment Mode is set by the host computer after all channels have been configured in IDLE Mode. This mode is used primarily by the system to calibrate itself before magnet measurement data is taken. The front panel push button is disabled in this mode so the module cannot be reset during system calibration.

Idle Mode

Idle Mode is used to configure the BSM-1002A. It is the only Mode that allows data to be sent to the relay drivers which select which of the binary-weighted 12-bit resistors will be selected. The front panel push button is enabled in this mode so the module can be reset.

Module Reset

Module reset occurs when the BSM-1002A is powered on or reset by the host computer or by the front panel push button. All eight channels are then set to bypass, meaning no resistors are chosen. In addition all module registers are set to zero (0) and the module is then set to IDLE mode.

Channel Configuration

Figure 1-2 shows how each resistor is placed in relationship with each other. A two coil latching, double pole double throw relay is used with a maximum contact resistance of 60mW. These relays are used to place each resistor in series or in bypass at user’s discretion. A total resistor value of 50,837.7W with a tolerance of 1% can be attained with all bits set to a decimal value of 4095. Each resistor is 1/8 watt 1% metal film with excellent low noise and voltage coefficient characteristics. Table 1-1 shows the basic values which apply to this module.

Bit Resistor

0 12.1

1 24.3

2 48.7

3 97.6

4 196

5 392

6 787

7 1.58K

8 3.16K

9 6.34K

10 12.7K

11 25.5K

Table 1-1, Basic Resistor Values

Hardware Components

The Bucking Source Module contains a top shield and a bottom shield. To ensure the lowest noise rejection and temperature stability, the shields should be in place before operating this module.

Chapter 2

Preparing a VXIbus Card for Installation

Chapter Contents

This chapter describes the procedures for configuring, installing the module, and using the BSM-1002A Bucking Source Module.

· BSM -1002A Logical Address................................................... 2-1

· Setting I/O (DT9110 Addressing)............................................. 2-2

· Preparing for Installation and Removal...................................... 2-6

BSM-1002A Logical Address

Each device in a system has a unique Logical Address. The value of the BSM-1002A’s Logical Address is set by switch SW1. If a value of FFhex is chosen as the module’s Logical Address, the BSM-1002A will become a dynamically configured (DC) device, meaning the value of its Logical Address register will be programmed automatically during initialization by the Resource Manager.

The BSM-1002A is shipped with the default Logical Address of 1 as shown in Figure 2-1.

Figure 2-1 Logical Address

If more than one Bucking Source Module is used, then subsequent cards must be set to a different Logical Addresses.

Setting I/O Addresses (DT9110, (U19))

The BSM-1002A employs a DT-9110 VXI adapter card from Interface Technology. This card provides a complete VXI bus interface capable of performing all register based data transfers. The following are registers which have to be programmed by the user:

ID Register (READ ONLY)

BIT # 15<-14 13<-12 11<-0

CONTENTS DEVICE CLASS ADDRESS SPACE MANUFACTURER ID

DEVICE CLASS (Read Only)

This field indicates the classification of the DT9110 according to the following table. The default value is 11.

VALUE CLASS

00 Memory

01 Extended

10 Message Based

11 Register Based

ADDRESS SPACE (Read Only)

This field indicates the addressing mode(s) of the DT9110's operational registers according to the following table. The default value is 00.

VALUE MODE

00 A16 /A24

01 A16 /A32

10 RESERVED

11 A16 Only

Manufacturer ID (Read Only)

This number uniquely identifies the manufacturer of the device. The list of ID numbers is maintained by the VXIbus consortium. Each VXIbus device manufacturer has exactly one Manufacturer ID number. Numbers are assigned to manufacturers in decreasing order beginning with number 4095. See the VXIbus specifications for information on obtaining a manufacturer ID number. The manufacturer ID number for Fermilab is 3775

Device Type Register (Read Only)

The Device Type register is programmed by selectively setting switches RN1 and RN2 (See Fig. 2-2, ID/DEVICE TYPE REGISTER CONFIGURATION). The Device Type register fields are defined by the VXIbus specification as follows.

Device Type Register

BIT # 15 <- 12 11 <- 0

CONTENTS REQUIRED MEMORY MODEL CODE

REQUIRED MEMORY

This field is only required for A16/A24 and A16/A32 devices. These 4 bits contain a number m, which is between 0 and 15. The required amount of memory M is defined as

M=256 a * 2 23-m ,

where a is the value address space field in the ID register. This equation gives the amount of A24 VMEbus memory space (in bytes) resident on the device. The DT9110 will automatically decode the address bits to the corresponding resolution. The default value of this field is 0x0008, which corresponds to 32768 bytes (32 Kbytes) if the DT9110 is configured as an A16/A24 device, or 8388608 bytes ( 8 Mbytes) if the DT9110 is configured as an A16/A32 device. If the DT9110 is configured as an A16 only device, these four bits are the upper bits of the model code.

NOTE: If the DT9110 is configured as an A16/A24 device, the minimum size of the A24 memory is 256 bytes. The maximum size is 1/2 of the complete A24 VMEbus address space. If the DT9110 is configured as an A16/A32 device, the minimum size of the A32 memory is 65536 bytes (64 Kbytes). The maximum size is 1/2 of the complete A32 VMEbus address space. It is a good idea to limit the memory space of any one device to 1/4 of the available address space.

MODEL CODE

This field contains a unique card identifier that is defined by the manufacturer. In the case of an A16 only device, this field occupies all 16 bits of the Device Type register. Model code's 0-255 (0-FFHEX) are reserved for Slot 0 devices. The default value for this field is 0. Therefore, if the Device Type register value is not modified by the user, the system's Resource Manager may give a warning during initialization indicating "redundant Slot 0 capability", or other similar warning. Programming a model code value greater than 255 will eliminate this warning. The Model Code for the Bucking Source Module is 1002.

Figure 2-2 ID/DEVICE TYPE REGISTER CONFIGURATION.

The default values for the ID register and Device Type register are as follows.

ID Register

BIT # 15 <- 14 13 <- 12 11 <- 0

BINARY VALUE 11 00 111010111111

DEFINITION DEVICE CLASS (register base) ADD. SPACE = A16/A24 MANUF. ID = 3775

Device Type Register

BIT # 15 <- 12 11 <- 0

BINARY VALUE 1000 001111101001

DEFINITION REQUIRED MEMORY32768 bytes (A24 register)or 8388608 bytes (A32 registers) MODEL CODE = 1002

Installing the VXI Card

Installation and Removal

Before beginning the installation make sure that the modules logical address and I/O controller card perimeters are set.

Installing the BSM-1002A into the crate.

The BSM-1002A can be installed in any C-Size crate slot, except slot 0. VXIbus cards fit only one way into VXIbus crate and care must be taken to avoid misalignment of the module and bending the pin on the two connectors at the rear of the module.

Attention: Do not install the VXIbus card with power on the crate.

The installation should proceed in the following order:

1. Gently slide the VXIbus card into crate.

2. Use your thumb just under the extractor handles to firmly press the module into the crates P1 and P2 connectors.

3. Tighten the two front panel mounting screws

Removing the BSM-1002A from the crate.

Attention: Do not remove the VXIbus card from the crate while the crate power is turned-on.

1. Loosen the two front panel mounting screws,

2. Press down on the bottom extractor while pulling up on the top extractor,

3. Pull the module away from the crate.

Once the BSM-1002A is away from the backplane connectors of the crate, the module can be easily pulled away from the crate.

Chapter 3

Addressing

BSM-1002A

Chapter Contents

This chapter describes the addressing parameters for the BSM-1002A card. The contents of this chapter are:

· About Register-Based Programming

· Addressing the Registers

· The Base Address

· Register Definitions

· Reading the Registers

· Interrupt Requests

· Writing to the Registers

· Number of boards allowed

· Serial number

About

Programming

The BSM-1002A module is a register-based module that allows the user to read and write directly to the module's registers. Register-based programming also allows the use of an embedded controller or 0 slot controller to access the VXIbus directly to increase throughput.

Addressing the

Registers

Each VXI register-based device is allocated addresses for 64 register. The DT9110 makes available only 32 registers. Addresses for the I/O device are located within the first 64K of memory in the A16 area (base1 = 0). Addresses for the registers controlling the Bucking Source Module are located in the A24 area (base2 = 20000).

Figure's 3-1 and 3-2 show the Bucking Source Module’s register address location within the A16 and A24 address space.

Figure 3-1. BSM-1002A Registers within A16 Address Space

Figure 3-2. BSM-1002A Registers within A24 Address Space

The DT9110 VXIbus Interface card incorporates all of the register based configuration registers required by the VXIbus specification and decodes the address lines to provide a select signal (DDSEL) for all A16 Device Dependent registers to a given logical address. All registers conform to the definitions and rules given in the VXIbus specification. The VXIbus register map is shown below in Table 3-1.

I/O (DT9110) VXIbus Interface Card Address

00h ID/Logical Address undefined

02h Device Type undefined

04h Status Register Control Register

06h Offset reserved

08h Device Dependent Command Register

0Ah Device Dependent Parameter Register

0Ch Device Dependent reserved

0Eh Device Dependent undefined

Table 3-1, VXI Interface Card Address

The Base Address

The base addresses for the DT9110's device registers is represented by A6. through A15 address lines and is determined by the device's unique logical address. The logical address is determined SW1, or is programmed by the system's Resource Manager if a value of FFH is placed on SW1. The logical address corresponds to bits 6 -13 of the device register base address. Bits 14 and 15 of the base address are both 1. VXIbus accesses to the DT9110's registers are automatically detected and controlled by the DT9110.

To read or write to specific registers, you must specify the register address either in hexadecimal or decimal number. This address consists of a base address plus a register offset (lower A1-A15 address lines).

Manufacturer ID (Read) Register ( b = base1 address; 00h = register offset; Returns EBFh = 3775)

b + 00h 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Write undefined

Device Type (Read) Register (b = base1 address; 02h = register offset; Returns 3EAh = 1002 )

b + 02h 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

Write undefined

I/O Status (Read) / Control (Write) Register (b = base1 address; 04h = register offset; * Refer to “Writing to the Register” for an explanation of using the control register to reset module.)

b + 04h 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

* Write A24/A32 MODID not used

Read X X X X X X X X X X Ready Passed SYSFAILInhibit Reset

Channel 1 (Read / Write) Set Register (b = base address; 00h = register offset; * Refer to “Writing to the Register” for an explanation of using channel # 1 register.)

b + 00h 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0