ETAS ES1331.1 User manual

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Instra

ES1331.1
Signal Generator Board (4-CH)
User’s Guide
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ES1331.1 Signal Generator Board (4-CH)2
Copyright
The data in this document may not be altered or amended without special
notification from ETAS GmbH. ETAS GmbH undertakes no further obligation in
relation to this document. The software described in it can only be used if the
customer is in possession of a general license agreement or single license.
Using and copying is only allowed in concurrence with the specifications stip-
ulated in the contract.
Under no circumstances may any part of this document be copied, repro-
duced, transmitted, stored in a retrieval system or translated into another lan-
guage without the express written permission of ETAS GmbH.
© Copyright 2000 - 2003 ETAS GmbH, Stuttgart, Germany
The names and designations used in this document are trademarks or brands
belonging to the respective owners.
R1.0.2 EN - 07.2003 TTN F 00K 700 304
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Contents 3
Contents
1Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1.1 Digital Signal Processor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1.2 Virtual Dual-Ported RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1.3 Digital/Analog Converters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1.4 Interface to the Piggyback Module . . . . . . . . . . . . . . . . . . . . . . 10
2.1.5 VMEbus Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2 Hardware Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2.1 Base Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2.2 Interrupt number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2.3 Boot Program Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.2.4 Supply Voltage Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.2.5 Supply Voltage for 12 V Stand-Alone Mode . . . . . . . . . . . . . . . 14
2.3 Pin Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.3.1 Connector X1: Analog Outputs . . . . . . . . . . . . . . . . . . . . . . . . 15
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Contents4
2.3.2 Connector X2: Optional Digital Inputs and Outputs . . . . . . . . . 16
2.4 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3ETAS Contact Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
List of Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
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Introduction 5
1Introduction
This section contains information about the basic features and applications of
the ES1331.1 Signal Generator Board. A block diagram shows the schematic
layout of the plug-in board.
1.1 Features
The ES1331.1 Signal Generator Board is used to generate analog and digital
output signals in VMEbus systems. The plug-in board has its own digital signal
processor (DSP) working independently from the main processor of the VME
system.
By using a DSP, the signal form of the output signal can be programmed as
desired; even stringent requirements regarding the variation speeds of ampli-
tude, frequency, and pulse width can be met with ease.
The 64Kword virtual dual-ported RAM (DPRAM) allows write/read access by
both the system processor and the DSP. This memory area is intended for the
exchange of programs and data between the DSP and the system processor.
Optionally, the DSP can use an additional 64-Kword EPROM as program mem-
ory. This memory area can be write-accessed by the DSP.
For analog signal generation, the plug-in board has four digital/analog con-
verters with 12-bit resolution and a maximum conversion delay of 6 msec. The
output voltage range is -10 V to +10 V relative to the ground potential of the
VMEbus system.
The digital output signals are generated by a piggyback module providing
eight counters. Every two counters form one output channel. The address,
data and control lines of the DSP are passed on to the piggyback module.
The board has the following features:
• TMS320C203 digital signal processor
• 64-Kword virtual dual-ported RAM as program or data memory
• four digital/analog converters with 12-bit resolution and a max. output
voltage range of –10 V to +10 V
• front panel ports for analog and digital output signals
note
Some components of the ES1331.1 may be damaged or destroyed by electro-
static discharges. Therefore, keep the plug-in board in its storage package until
it is installed.
The ES1331.1 may only be taken from the storage package, configured and
installed at a working place that is protected against static discharges.
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Introduction6
• interrupt generation on the VME bus
• VMEbus interface
• optional 64-Kword EPROM as program or data memory
• piggyback module for digital signal generation
The following figure shows the front panel and the position of the connectors.
Fig. 1-1 Front panel
1.2 Applications
The ES1331.1 Signal Generator Board is intended for use in VMEbus systems
where analog and digital signal shapes of different frequencies, amplitudes,
and pulse widths need to be generated. The digital signal processor (DSP)
allows flexible signal generation independently from the system processor.
ES1331.1
X1
X2
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Introduction 7
Sample applications are:
• generation of active or passive speed sensor signals for driving-dynamics
systems
• generation of speed signals for gearbox control units
1.3 Block Diagram
The following figure shows a block diagram of the ES1331.1 Signal Generator
Board
Fig. 1-2 Block diagram
In the center of the block diagram, you can see the digital signal processor. To
the right of the signal processor is the dual-ported RAM manager that allows
access to the 128-KB RAM by the DSP and VME bus. To the left of the DSP, you
can see the four digital/analog converters and the signal conditioner for the
four analog outputs.
The data, address, and control signals of the DSP, as well as the digital outputs
of the front panel, are passed on to a piggyback module.
The piggyback module contains eight counters in four groups that can be used
to generate PWM signals with variable frequencies and pulse duty factors.
Signal
Conditio-
ning
128 kB
RAM
Dual-
Ported
RAM
Manager
VME-
Inter-
face
Analog
Outputs
VME-
Bus
Digital
Outputs
Digital
Signal
Processor
4
D/A-
Converter
Piggy-
back
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Introduction8
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Hardware 9
2 Hardware
This section contains a detailed functional description, information about the
jumpers and solder straps, the pin allocation of the connectors, and the tech-
nical data of the ES1331.1 Signal Generator Board.
2.1 Functional Description
This section gives you a detailed overview of the features of the ES1331.1 Sig-
nal Generator Board. You will find information on the following subjects:
• digital signal processor
• virtual dual-ported RAM
• analog/digital converter
• interface to the piggyback module
• VMEbus interface
2.1.1 Digital Signal Processor
The digital signal processor TMS320C203 is used as the CPU of ES1331.1. The
digital signal processor (DSP) can operate independently from the main proces-
sor of the VME system. Data are exchanged between the two processors via a
virtual dual-ported RAM. The processing performance of the signal processor
is 40 MIPS with a word size of 16 bits. The signal processor has an internal
544-word program or data memory.
The signal processor can be started either from an external EPROM or from the
dual-ported RAM. This can be selected by jumpers.
2.1.2 Virtual Dual-Ported RAM
The virtual dual-ported RAM is used for the communication between the main
processor of the VME system and the digital signal processor. The two proces-
sors can access a shared RAM area of 128 KB (64 Kwords) via a dual-ported
RAM manager. The dual-ported RAM manager prevents address conflicts and
prioritizes the access requests.
The dual-ported RAM can be used both for data and program storage. The
program of the signal processor can be loaded from the VME system processor
into the dual-ported RAM; it can then be used to start the DSP.
2.1.3 Digital/Analog Converters
The four digital/analog converters of the ES1331.1 have a 12-bit resolution at
a maximum conversion delay of 6 µsec. The output voltage range is -10 V to
+10 V relative to the ground potential of the VME system. The output voltages
of all four D/A converters can be output in sync with each other.
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