Xycom XVME-560 User manual

XVME-560 Manual
September, 1984
Chapter 1
INTRODUCTION
1.1 INTRODUCTION
The XVME-360 Analog Input Module (hereafter referred to as the AIN) is a VMEbus
compatible module which can perform 12-bit resolution A/D conversions on up to 64
different input channels. The AIN can be programmed to operate in the following four
different modes:
lsingle channel conversion
lrepeated conversions on one channel
conversions on sequential channels
external triggering of conversion
Other features of the AIN include:
lJumper selectable voltage input ranges of +lOV, 2.5v, 0-I0V, +5v, o-5v
-
Programmable gain of 1,2,4 or 8
Can interrupt at any VMEbus level (11-17) (STAT)
l 20 KHz conversion rate
Possible applications for the AIN are:
l Data acquisition
l
Closed loop process control
Pressure sensing
Temperature sensing
1.2 HOW THIS MANUAL IS ORGANIZED
This chapter provides a functional overview of the AIN and presents the features of
XYCOM’s Standard I/O Architecture. Operational aspects of the
AIN are then
explained in the following fashion:
Chapter Two -Installation -- Presents information required for module installa-
tion.
Chapter Three -Programming -- Presents information required to program
operating modes, access data, and perform module calibration.
The appendices at the rear of this manual provide information on XYCOM's Standard
I/O Architecture, VMEbus connector/pin description, module schematics and a quick
reference of module addresses and jumpers.
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XVME-560 Manual
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1.3.1 Analog Circuitry
As can be seen from Figure l-1, the application circuitry consists primarily of the 12-
bit A/D converter and its related signal conditioning components listed below:
Multiplexer: directed by software (see Chapter 3) to select one channel for data
conversion.
Buffer (Instrumentation Amplifier): provides a high impedance front end to the
analog signal coming out of the multiplexer.
Programmable Gain: allows a gain of 1, 2, 4 or 8 to be selected for increased
conversion resolution on smaller input signals.
Sample and hold: samples the input signal for 23 usec to allow for “settling
time” in the Instrumentation Amplifier and gain circuitry. This signal is
then "held" until the conversion is completed.
Interrupt circuitry: allows a conversion completion to generate an interrupt (see
Section 3.8).
1.3.2 XYCOM Non-Intelligent Kemel
The Non-Intelligent Kernel is basically the interface to the VMEbus. It provides all
the necessary circuitry to receive and generate the signals required by the VMEbus
specification for a 16-bit slave. By simply adding the application circuitry (in this
case A/D circuitry), a VMEbus module is complete. The Non-Intelligent Kernel has the
following features:
Control and Address Buffers
l
Address Decode circuitry
l
Interrupt Decoder/Driver
l Control/Status Register
l Module identification information
lPass and Fail LED indicators
The XYCOM Non-Intelligent Kernel is described in further detail in Appendix A.
1.4 FEATURES OF XYCOM’S STANDARD I/O ARCHITECTURE
The AIN and all XYCOM I/O modules conform to the unique XYCOM VMEbus Standard
I/O Architecture. This architecture is intended to make the programming of XYCOM
VMEbus I/O modules simple and consistent. The following features apply to the
operation of the AIN.
Module Address -The AIN can be located at any one of 64 base addresses
in VMEbus Short I/O memory.
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XVME-560 Manual
September, 1984
lModule Address Space -The
AIN occupies 1K of Short I/O Address Space
known as the I/O Interface Block which contains all of its programming
registers.
Module Identification -
The AIN has I.D. information which provides its
name, model number, manufacturer and revision level at a location that is
consistent with other XYCOM I/O modules.
A detailed description of XYCOM I/O Architecture is presented in Appendix A at the
rear of this manual.
1.5 SPECIFICATIONS
MODULE SPECIFICATIONS
Analog Inputs
No. of Analog Inputs
Single-ended
Differential
Input Voltage Ranges
(jumper-selectable)
Unipolar
Bipolar
Software Programmable
Gain
64
32
0-5V, 0-I0V
+2.5v, +5v, +lOV
--
1, 2, 4, 8
Effective Full Scale Input Ranges
Unipolar
Bipolar
Maximum Input Voltage
(without
damage)
Power on
Power off
Input Impedance
with 22 Mohm resistor
without 22 Mohm
resistor
0-625mV to 0-I0V w/Gain value
+312.5mV to +lOV w/Gain value
-
44v
30v
17 M (min.)
100 M
(min.)
Bias Current
Input Capacitance
Operating Common Mode
Voltage
+loONA max.
-
225pf max.
+14v
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XVME-560 Manual
September, 1984
Accuracy
Resolution
Linearity
Differential Linearity
System Accuracy
with Gain = 1
with Gain = 8
System Accuracy Temperature Drift
+iOV at Gain = 1
y2.W at Gain = 8
-
CMRR
Monotonicity
12 bits
+1/2 LSB
-
+1/2 LSB
-
+0.025% of FSR
;0.05% of FSR
-
40 ppm/OC
75 ppm/OC
74db min.
guaranteed
Conversion time
Throughput
Delay from External
Trigger to Sampling
50 uSec
20K conversions/sec
23 us
Power Requirements +5V Typ. - 2.OOA
Max. -2.50A
Environmental
Temperature
Operating
Non-Operating
0 to 69~
-40 to 85’~
Humidity
Altitude
Operating
Non-Operating
Vibration
Operating
Non-Operating
I
5 to 95% RH non-condensing
Sea-level to 20,000 ft.
Sea-level to 50,000 ft.
5 to 2000 Hz
.015 inches peak-to-peak displacement
2.5 g peak (maximum) acceleration
5 to 2000 Hz
.030 inches peak-to-peak displacement
5.0 g peak (maximum) acceleration
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XVME-560 Manual
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Shock
Operating
Non-Operating
30 g peak acceleration,
11 msec duration
50 g peak acceleration,
11 msec duration
Physical Specifications
Double Height VME board
233.35 mm x 160 mm (9.2” x 6.3”)
Fully compatible with VMEbus standard
Al 6:D16 Data Transfer Bus slave
I(1) - I(7) (STAT) (Programmable Vector)
Base address jumper-selectable within VMEbus Short I/O or Memory-Mapped
Address Space
Occupies 1K consecutive byte locations
Includes XYCOM's standard I/O module interface
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XVME-560 Manual
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Chapter 2
INSTALLATION
2.1 INTRODUCTION
This chapter provides the information necessary to configure the AIN for installation
in a VMEbus backplane cardcage. The components relevant to installation are
discussed and the installation procedure is presented.
2.2 SYSTEM REQUIREMENTS
The AIN is a double-height VMEbus compatible module. To operate it must be
properly installed in a VMEbus backplane cardcage. The minimum system require-
ments for operation of the AIN are one of the following:
A)
B) l
A host processor properly installed on the same backplane.
l A properly installed controller subsystem with the following features:
-- Data Transfer Bus Arbiter
-- System Clock driver
-- System Reset driver
-- Bus time-out module
An example of such a controller subsystem is the XYCOM XVME-010
System Resource Module (SRM).
--
OR
--
A host processor which incorporates an on-board controller subsystem.
2.3 JUMPERS/SWITCHES
Prior to installing the AIN, it will be necessary to configure several jumper/switch
selectable options.
These options fall into two categories: VMEbus-related options
and Analog-to-Digital conversion options.
VMEbus Options
l Module base address, selected by switches 1-6 on Switch Bank 2.
l Address space used by the module, selected by J2 and switch 7 on Switch
Bank 2.
lPrivilege level required to access module, selected by switch 8 on Switch
Bank 2.
lThe
interrupt level used by the module, selected by switches l-3 on Switch
Bank 1.
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XVME-560 Manual
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Analog to Digital Conversion Options
l
l
l
l
The channel configuration, either single-ended inputs or differential inputs.
Selected by jumpers J10, Jll, J13, J14.
One of the five different input scaling ranges. Selected by jumpers J5, J6,
J7, J8, and J9.
The digital data format for the digital value produced as a result of an A/D
conversion, either straight binary,
offset binary or two’s complement.
Selected by jumpers J3 and J4.
If Channel zero is to be used as a ground reference. Selected by jumpers
J15 and Jl6.
Table 2-l. AIN Jumper/Switch List
Jumper/Switch Use
.
JlB Enables IACKIN*/INACKOUT* daisy chain (this is a
hardwired jumper and is always installed).
J2A
J2B
J3A
J3B
J4A
J4B
J5
J6
J7
J8
J9
Memory mapped operation.
Short I/O operation.
These jumpers select the kind of digital code that will
be produced as a result of reading an analog signal (see
Table 2-V).
These jumpers select one of the five input scaling
’
ranges used (see Table 2-8).
Jl0A
Jl0B
Jll
J13
Jl4A
Jl4B
These jumpers select between single-ended or
differential input (see Table 2-7).
J12
J15
J16
Switch Bank 1
Switch Bank 2
Test purposes only - J 12B always installed.
Used in grounding channel zero for a ground
reference (see Table 2-10).
Interrupt Level Select switches.
Base Address address space and privilege level select
switches (see
Tables 2-2, 2-3 and 2-4).
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XVME-560 Manuai
September, 1984
2.4.2 Address Space Selection
The user is given the option of placing the AIN in VMEbus Short I/O or Standard
Memory Space. The selection is made by configuring jumper J2 and Switch 8 of Switch
Bank 2 (see Figure 2-2) as shown in Table 2-3 below.
Table 2-3. Addressing Options
Jumper Switch 8Option Selected
J2A Open Standard Data Access Operation
J2B Closed Short I/O Access Operation
If jumper J2A is installed, Switch 8 must be set to open.
If jumper J2B is installed, Switch 8 must be set to closed.
The Standard I/O Architecture recommends that the AIN operate within the Short I/O
Address Space, in order to take advantage of the Standard I/O Architecture’s various
features, which are described in Appendix A.
If required, the AIN can operate in the Standard Address Space. The user should note
that in this mode, the AIN will always reside within the last 64K byte segment of the
Standard Memory Address Space (i.e., the address range FFOOOOH through FFFFFFH).
SUPERVISOR/
NON-PRIVILEGED
BASE ADDRESS
.
I
- ADDRESS SPACE
1 2 3-4
5678
OPEN
SELECTION
Figure 2-2. Switch Bank Two
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XVME-560 Manual
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2.4.3 Supervisor/Non-Privileged Mode Selection
The AIN can be configured to respond to only Supervisory access, or to both Non-
Privileged and Supervisory accesses, by selecting the position of Switch 7 (located in
Switch Bank 2, see Figure 2-2), as shown in Table 2-4 below.
Table 2-4. Privilege Options
Switch 7Privilege Mode Selected
.
Closed
Open
Supervisory or Non-Privileged
Supervisory Only
2.4.4 Address Modifier Reference
The following table (Table 2-5) indicates the actual VMEbus Address Modifier code
that the AIN will respond to based on the position of the two options discussed in the
previous two sections.
Table 2-5. Address Modifier Code Options
Short
I/O
Standard
Address
Switches
7 8
Closed Closed
Open Closed
Closed Open
Open Open
Jumper
J2
B
29H or 2DH
B 2DH only
A
A
Address Modifier Code
AIN will respond to
I
39H or 3DH
3DH only
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XVME-560 Manual
September, 1984
2.405 IACKIN/IACKOUT Daisy Chain
The AIN has the ability to generate a VMEbus interrupt. Therefore, jumper J1 is
hardwired in position "B" to enable the IACKIN/IACKOUT daisy chain.
CAUTION
The jumper shorting IACKIN to IACKOUT for the
AIN’s slot in the backplane must be removed, or the
AIN may be damaged.
2.4.6 Interrupt Level Switches
Figure 2-3 shows Switch Bank 1 with its three interrupt level select switches. Table
2-6 illustrates their use.
-OPEN-
Figure 2-3. Switch Bank 1 Interrupt Level Select Switches
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XVME-560 Manual
September, 1984
Table 2-6. Interrupt Level Options
Switches
32 1
0 0 0
0
0 1
0
I 0
0 11
1
0 0
1 0 1
1 1 0
1 1 1
Level
No Level selected
Level 1
Level 2
Level 3
Level 4
Level 5
Level 6
Level 7
NOTE
Open = Logic "1"
Closed = Logic "0"
2.4.7 BGxIN/BGxOUT Daisy chain
The Data Bus Arbitration signals BGxIN and BGxOUT (where "x" can be a number 0-3
to represent the three levels of arbitration) are not used by the AIN, and are hardwired
together on the module to allow the BGxIN/BGxOUT Daisy Chain to pass through the
backplane slot occupied by the AIN. In each slot of the VMEbus backplane, there are
four sets of jumpers shorting the signal BGxIN to BGxOUT (x=0 thru 3). Since these
signals are already hardwired on the AIN, it is not necessary to insert these VMEbus
jumpers on the slot occupied by the AIN.
2.4.8 Miscellaneous Jumpers
Jumper J12 enables the output of the Instrumentation amplifier for test purposes only
and is left fixed in the "A" position.
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XVME-560 Manual
September, 1984
Analog to Digital Conversion Options
2.4.9 Channel Configuration Jumpers
The AIN can operate in either single-ended or differential mode. In differential mode,
the AIN converts the analog voltage difference between two inputs. In single-ended
mode, the AIN converts the analog voltage on one channel with respect to Analog
Ground. If the AIN functions in single-ended mode, 64 input channels are available; if
it functions in differential mode, 32 channels are available.
Table 2-7 describes how jumpers Jl0, Jll, J13, and J14 select the input mode.
Table 2-7. Analog Input Options
Option Jumpers Inserted
Single-ended Input
JI0B, J13, JI4A
Differential Input Jl0A, Jll, Jl4B
2.4.10 Analog Input Range
The AIN provides five different input scaling ranges which are selected byjumpers J5,
J6, J7, J8 and J9 (see Figure 2-4). Any voltage above the specified range will be given
the maximum (+ full scale) 12-bit value; any voltage below the specified range will be
given the minimum value (or - full scale) (see also Section 3.6.l).
demonstrates how these options are selected. Table 2-8
Table 2-8. Input Scaling Options
Input
Range
0 to +5 volts
0 to +lOvolts
Jumpers
Inserted
J6,J7,J8
J6, J8
J6, J9
J5,J7,J8
J5, J8
Jumpers
Removed
J5, J9
J5,J7,J9
J5,J7,J8
J6,J9
J6,J7,J9
2-9