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Acromag PMC341 Series User Manual

Pci mezzanine card simultaneous sampling analog input module
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  • Page 1 (217) 352-9330 | Click HERE Find the Acromag PMC341 at our website:...
  • Page 2 Simultaneous Sampling Analog Input Module USER’S MANUAL ACROMAG INCORPORATED 30765 South Wixom Road P.O. BOX 437 Wixom, MI 48393-7037 U.S.A. Tel: (248) 295-0310 Fax: (248) 624-9234 Copyright 2004, Acromag, Inc., Printed in the USA. Data and specifications are subject to change without notice. 8500-654-D13C010...

  • Page 3: Table Of Contents

    5.0 SERVICE AND REPAIR..........The information contained in this manual is subject to change SERVICE AND REPAIR ASSISTANCE......without notice. Acromag, Inc. makes no warranty of any kind with PRELIMINARY SERVICE PROCEDURE...... regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose.

  • Page 4: Key Pmc341 Features

     External Trigger Input or Output - The external trigger is that allow Acromag PMC modules to be easily integrated into assigned to a field I/O line. This external trigger may be Windows application programs, such as Visual C++, Visual configured as an input, output, or disabled.

  • Page 5: Pmc Module Vxworks Software

    30 micron gold in the mating area (per MIL-G-45204, material be saved for future use in the Type II, Grade C). Connects to Acromag termination panel 5025- event the product must be shipped. 552 from the front panel via round shielded cable (Model 5028- 187).

  • Page 6: Rear J4 Field I/O Connector

    SERIES PMC341 PCI MEZZANINE CARD SIMULTANEOUS ANALOG INPUT MODULE ___________________________________________________________________________________________ +CH07 -CH15 The PMC341 is non-isolated, since there is electrical -CH07 COMMON continuity between the logic and field I/O grounds. As such, the COMMON EXT TRIGGER* field I/O connections are not isolated from the carrier/CPU board +CH08 SHIELD and backplane.

  • Page 7: 3.0 Programming Information

    This Section provides the specific information necessary to program and operate the PMC341 module. This Acromag PMC341 is a PCI Specification version 2.2 compliant PCI bus target only PMC module. The carrier/CPU connects a PCI host bus to the PMC module.

  • Page 8: Pci Configuration Address Space

    SERIES PMC341 PCI MEZZANINE CARD SIMULTANEOUS ANALOG INPUT MODULE ___________________________________________________________________________________________ PCI Configuration Address Space Table 3.2: PMC341 Memory Map When the computer is first powered-up, the computer’s Base Base system configuration software scans the PCI bus to determine Addr+ Addr+ what PCI devices are present.

  • Page 9: Control Register

    SERIES PMC341 PCI MEZZANINE CARD SIMULTANEOUS ANALOG INPUT MODULE ___________________________________________________________________________________________ Table 3.3: Interrupt Register FUNCTION FUNCTION internal hardware triggers generated at the frequency set by the interval timer registers. Board Interrupt Enable Bit. (Read/Write Bit) 11 = Reserved 0 = Disable Interrupt 00 = All Channels Differential Input.

  • Page 10: Channel Enable Control Register

    SERIES PMC341 PCI MEZZANINE CARD SIMULTANEOUS ANALOG INPUT MODULE ___________________________________________________________________________________________ Figure1: Time line of channel bank conversions The software reset will clear this control register, the channel enable register, counters, and the Memory Threshold register. The 24-bit Low Bank Timer value divides an 8 MHz clock signal.

  • Page 11: Memory Threshold Register

    SERIES PMC341 PCI MEZZANINE CARD SIMULTANEOUS ANALOG INPUT MODULE ___________________________________________________________________________________________ be programmed with a delay. If this register is left as zero erroneous operation will result. Start Convert Register (Write Only, 18H) The 24-bit High Bank Timer value is divided by an 8 MHz clock signal.

  • Page 12: Reference Voltage Access Register

    The at address 00 until the null ASCII character is read. This string module should be returned to Acromag if the reference voltage can then be converted into a float by using your compiler’s ATOF must be re-measured and stored to memory.

  • Page 13: Modes Of Conversion

    SERIES PMC341 PCI MEZZANINE CARD SIMULTANEOUS ANALOG INPUT MODULE ___________________________________________________________________________________________ MODES OF CONVERSION set when valid data is available in the memory buffer. The Transition Status bit is cleared upon the first read of the memory The PMC341 provides two methods of analog input operation buffer and will not be set again until the memory buffers switch for maximum flexibility with different applications.

  • Page 14: Use Of Calibration Reference Signal

    Software calibration uses some fairly complex equations. Calibration Programming Example Acromag recommends purchase of our ActiveX or VxWorks software to make communication with the board and Assume that channels 0 through 3 are enabled, and calibration easy. It relieves you from having to turn the corrected input channel data is desired.

  • Page 15: Programming Interrupts

    SERIES PMC341 PCI MEZZANINE CARD SIMULTANEOUS ANALOG INPUT MODULE ___________________________________________________________________________________________ enabled in the control register, an interrupt request will Read the Reference Voltage Value From Memory be issued when 400 values of the Auto Zero calibration voltage have been stored in the memory buffer. This Read the reference voltage memory to retrieve the corresponds to 100 values for each of the four unique reference voltage value (5VRefValue).

  • Page 16: 4.0 Theory Of Operation

    SERIES PMC341 PCI MEZZANINE CARD SIMULTANEOUS ANALOG INPUT MODULE ___________________________________________________________________________________________ Analog inputs and calibration voltages are selected via Interrupt Programming Example analog multiplexers. PMC module control logic drives the select signals of the multiplexer as required per the programming of the Enable PMC341 board interrupt by writing a “1”...

  • Page 17: Burst Read Of Pmc341 Memory

    SERIES PMC341 PCI MEZZANINE CARD SIMULTANEOUS ANALOG INPUT MODULE ___________________________________________________________________________________________ All register accesses to the PMC341 require 8 PCI clock CONVERSION COUNTER cycles with the exception of burst read operations which will be implemented in three PCI clock cycles. The ADC conversion rate is controlled by a conversion counter, which is a 24-bit counter implemented in the FPGA.

  • Page 18: 5.0 Service And Repair

    Surface-Mounted Technology (SMT) boards are generally difficult to repair. It is highly recommended that a non-functioning board be returned to Acromag for repair. The board can be easily damaged unless special SMT repair and service tools are used. Further, Acromag has automated test equipment that thoroughly checks the performance of each board.

  • Page 19: 6.0 Specifications

    SERIES PMC341 PCI MEZZANINE CARD SIMULTANEOUS ANALOG INPUT MODULE ___________________________________________________________________________________________ 6.0 SPECIFICATIONS Surge Immunity………………. Not required for signal I/O per PHYSICAL European Norm EN50082-1. Physical Configuration…….…... Single PMC Module Height......13.5 mm (0.531 in). Stacking 10.0 mm (0.394 in). Electric Fast Transient Height……………..

  • Page 20: Pci Local Bus Interface

    SERIES PMC341 PCI MEZZANINE CARD SIMULTANEOUS ANALOG INPUT MODULE ___________________________________________________________________________________________ External Trigger Input/Output ADC Spec’s As An Input:.....…..Must be an active low 5 volt logic TTL compatible, debounced Conversion Rate……………….. 125KHz signal referenced to digital Input Voltage Range…………… 10 Volts common.

  • Page 21: Appendix

    Application: To connect field I/O signals to the PMC Module. The cable length is 2 meters (6.56 feet). This shielded cable Termination Panel: Acromag Part 4001-040 (Phoenix is recommended for all I/O applications (both digital I/O and Contact Type FLKM 50). The 5025-552 termination panel precision analog I/O).

  • Page 23: 4501-878 Pmc341 Block Diagram

    FPGA CONTROL INTERFACE PRECISION PCI LOGIC LOGIC CALIBRATION INTERFACE VOLTAGES J1/J2 SERIAL TO PARALLEL CONVERTER MEMORY PCI BUS BUFFER 1 S/H & ADC DATA INST. 512 SAMPLES CH0 & CH8 MEMORY INPUT BUFFER 2 512 SAMPLES INTERRUPT THRESHOLD S/H & ADC DATA ANALOG INST.

  • Page 24: 4501-758 Cable, Scsi-2 To Flat Ribbon (Shielded)

    P MC C P U / A. DIFFERENTIAL VO LTAG E INPUT CO NNECTIO N DIAG RAM P MC 341 C A R R I E R B O A R D +C H 00 E S 0 C H 0 - C H 00 +C H 01 E S 1...

This manual is also suitable for:

Pmc341Pmc341ePmc341rPmc341re

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