SERIES PMC470 PCI MEZZANINE CARD 48-CHANNEL DIGITAL I/O MODULE WITH INTERRUPTS
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The information contained in this manual is subject to change
without notice. Acromag, Inc. makes no warranty of any kind with
regard to this material, including, but not limited to, the implied
warranties of merchantability and fitness for a particular purpose.
Further, Acromag, Inc. assumes no responsibility for any errors that
may appear in this manual and makes no commitment to update, or
keep current, the information contained in this manual. No part of
this manual may be copied or reproduced in any form, without the
prior written consent of Acromag, Inc.
Table of Contents Page
1.0 GENERAL INFORMATION............................................... 2
KEY PMC470 FEATURES................................................ 2
PCI MEZZANINE CARD INTERFACE FEATURES......... 3
SIGNAL INTERFACE PRODUCTS.................................. 3
PMC MODULE ActiveX CONTROL SOFTWARE............ 3
PMC MODULE VxWORKS SOFTWARE……….............. 3
2.0 PREPARATION FOR USE................................................ 3
UNPACKING AND INSPECTION..................................... 3
CARD CAGE CONSIDERATIONS................................... 3
BOARD CONFIGURATION.............................................. 3
CONNECTORS................................................................. 4
Front Panel Field I/O Connector P1............................... 4
I/O Noise and Grounding Considerations....................... 4
PCI Local Bus Connector ........................………........... 4
3.0 PROGRAMMING INFORMATION.................................... 5
PCI CONFIGURATION ADDRESS SPACE……...……... 5
CONFIGURATION REGISTERS……………...………….. 5
MEMORY MAP….............................................................. 6
Standard (Default) Mode Memory Map........................... 6
Enhanced Mode Memory Map........................................ 7
REGISTER DEFINITIONS................................................ 8
THE EFFECT OF RESET................................................. 11
PMC470 PROGRAMMING............................................... 11
Basic I/O Operation........................................................ 11
Enhanced Operating Mode............................................. 12
Event Sense Inputs........................................................ 12
Change-Of-State Detection............................................ 12
Debounce Control.......................................................... 12
Interrupt Generation....................................................... 12
Programming Example................................................... 13
4.0 THEORY OF OPERATION............................................... 14
PMC470 OPERATION...................................................... 14
PCI INTERFACE LOGIC…………………………………... 14
PMC MODULE SOFTWARE............................................ 14
5.0 SERVICE AND REPAIR.................................................... 14
SERVICE AND REPAIR ASSISTANCE........................... 14
PRELIMINARY SERVICE PROCEDURE......................... 14
6.0 SPECIFICATIONS............................................................. 15
PHYSICAL……………………........................................... 15
ENVIRONMENTAL…………………………………………. 15
DIGITAL INPUTS.............................................................. 15
DIGITAL OUTPUTS.......................................................... 15
PCI LOCAL BUS INTERFACE……………………………. 16
APPENDIX......................................................................... 16
CABLE, SCSI-2 to Flat Ribbon (Shielded):
MODEL 5028-187………................................................... 16
TERMINATION PANEL: MODEL 5025-552..................... 16
DRAWINGS Page
4501-859 PMC MECHANICAL ASSEMBLY..............…... 17
4501-871 PMC470 FIELD I/O CONNECTIONS………… 18
4501-872 PMC470 BLOCK DIAGRAM............................ 19
4501-873 PMC470 PULLUP RESISTOR LOCATIONS.. 20
4501-758 CABLE, SCSI-2 to Flat Ribbon (Shielded)
5028-187…..……………….............................. 21
4501-464 TERMINATION PANEL 5025-552................... 22
IMPORTANT SAFETY CONSIDERATIONS
It is very important for the user to consider the possible adverse
effects of power, wiring, component, sensor, or software failures in
designing any type of control or monitoring system. This is
especially important where economic property loss or human life is
involved. It is important that the user employ satisfactory overall
system design. It is agreed between the Buyer and Acromag, that
this is the Buyer's responsibility.
1.0 GENERAL INFORMATION
The PCI Mezzanine Card (PMC) Series PMC470 has 48
channels of general purpose digital inputs and outputs. Inputs and
outputs of this module are CMOS and TTL compatible. Each of the
I/O lines can be used as either an input, an output, or an output with
readback capability. Each I/O line has built-in event sense circuitry
with programmable polarity and interrupt support. The inputs may
also operate as independent event sense inputs (without interrupts).
Outputs are open drain and may sink up to 15mA each. A 4.7K
pullup is provided for each drain and is installed in sockets on the
board (SIP resistors) for easy removal or replacement. Inputs
include hysteresis and programmable debounce. Interrupt, event,
and debounce functionality applies to all 48 channels of this model.
The PMC470 utilizes state of the art Surface-Mounted Technology
(SMT) to achieve its wide functionality and is an ideal choice for a
wide range of industrial I/O applications that require a high-density,
highly reliable, high-performance interface at a low cost. The
PMC470 is available in standard and extended temperature range
cards as follows.
Model Operating Temperature Range
PMC470 0 to +70°C
PMC470E -40 to +85°C
KEY PMC470 FEATURES
•High Channel Count - Provides programmable monitor and
control of 48 I/O points.
•Programmable Polarity Event Interrupts (all 48 channels) -
Interrupts are software programmable for positive (low-to-high)
or negative (high-to-low) input level transitions on all 48
channels. Using two channels per input signal, change-of-
state transitions may also be configured for up to 24 inputs.
•Programmable Debounce (all 48 channels) - The event
sense input circuitry includes programmable debounce times
for all 48 channels. Debounce time is the duration of time that
must pass before the input transition is recognized as valid.
This helps prevent false events and increases noise immunity.
•CMOS (TTL Compatible) - Input threshold is at TTL levels
and includes hysteresis. I/O circuitry uses CMOS technology.
As such, output levels are CMOS compatible, even while
sinking high current (see Specifications Section).
•Input Hysteresis - Buffered inputs include hysteresis for
increased noise immunity.
•Output Readback Function - Readback buffers are provided
that allow the output port registers to be read back.
•High Output Sink Capability - All outputs may sink up to
15mA with a voltage drop ≤0.5V.
•Outputs are “Glitch-Free” - Unlike some competitive units,
the outputs of this device do not “glitch” (momentarily turn on)
upon power-up or power-down for steady and safe control.
