ADLINK PCM-9112+ User Manual

Appendix for PC/104-

Manual Rev. 1.03: September 19, 2002 Part No: 50-40035-200

plus

modules

1 Introduction

1.1 Introduction of PC/104-plus

PC/104-plus is a special bus architecture designed for embedded systems. A third connector
opposite the PC/104 connectors supports the PCI bus. Basically the electrical specifications of the
PC/104-plus bus are compliant with the PCI signals, except 64-bit extensions, JTAG, PRSNT or
CLKRUN signals. The mechanical specifications are changed to “module stack”; please refer to the
figure shown below. According to the specifications of PC/104-plus, PC/104-plus modules are
installed and configured by switching CLK, IDSEL, INT, REQ and GNT signals through multiplexers
to the appropriate connections.

PC/104+ Module Slot 4

PC/104+ Module Slot 3

.

PC/104+ Module Slot 2

PC/104+ Module Slot 1

Figure 1: PC/104-plus module stack

Rotary switch on PCM-9112+ is used for these signals switching, please refer to section 2.4 for
details in this appendix.

1.2 Specifications for PCM-9112+

The specifications of the PCM-9112+ are the same as that of the PCI-9112 except for the Digital
Input and Digital Output functions have been removed from the PCM-9112+. To compensate for
the removal of the DI/DO functions, the AD FIFO has been enlarged to 512 words allowing it to
handle a wider range of applications. Please refer to section 1.3 of the PCI-9112 manual for further
details.

1.3 Supported Software

PC/104+ Host

The supported software is the same as that of the PCI-9112 without the DI/DO functions. Please
refer to section 1.4 of the PCI-9112 manual for further details.

1

2 Installation procedures for PC/104-plus DAQ modules:

r

r

V

2.1 what you have

In addition to this appendix, the package includes the following items:

 PCM-9112+ DAQ modules

 Manual & Software Utility CD-ROM

If any of these items is missing or damaged, contact the dealer from whom you purchased the
product. Save the shipping materials and carton in case you want to ship or store the product in the
future.

2.2 unpacking

The card contains electro-static sensitive components that can be easily be damaged by static
electricity.

Therefore, the card should be handled on a grounded anti-static mat. The operator should be
wearing an anti-static wristband, grounded at the same point as the anti-static mat.

2.3 layout of modules

CN1 CN2

PC/104-plus

connecto

Jumper

JP1~JP5

PC/104

Figure 2: PCM-9112+ DAQ module layout

connecto

Rotary
switch

R1~VR7

2

2.4 PC/104-plus configuration

A rotary switch on the PCM-9112+ is used for switching the appropriate CLK, IDSEL, INT, REQ
and GNT signals from the PCI bus. If the PCM-9112+ card is inserted in a position nearest to the
PC/104-plus motherboard, the switch must be set to 0 or 4. For signal stability, the rotary switch
should be set to the appropriate position with respect to the module slot. The module stack order
was shown in Figure 1. According to PC/104-plus specification, module slots 3 and 4 share
REQ2/GNT2, hence they cannot both have bus-mastering devices. In another word, module 3 and
4 cannot be stacked with 2 PCM-9112+ modules.

Rotary Switch

Position

0 or 4 1 CLK0 IDSEL0 INTA REQ0* GNT0*

1 or 5 2 CLK1 IDSEL1 INTB REQ1* GNT1*

2 or 6 3 CLK2 IDSEL2 INTC REQ2* GNT2*

3 or 7 4 CLK3 IDSEL3 INTD REQ2* GNT2*

* Only for Bus Master card

Module

Slot

CLK IDSEL INT REQ GNT

Table 1: Rotary switch setting

2.5 Jumpers Setting

On the PCM-9112+ DAQ module, there are 5 jumpers that need to be adjusted depending on
application requirements. The following table describes the attributes of these jumpers.

Configuration Attributes Jumpers

Analog Inputs

Clock Source

D/A Reference

Voltage

D/A Reference Source

Single-ended or

Differential Analog Input

Internal Clock or

External Clock

-10V or -5V JP3

Internal Reference or

External Reference

JP1 and JP4

JP2

JP5

Table 2: Jumpers setting

3