ACCES I/O Products, Inc.
MADE IN THE USA
mPCIe-ADIO16-16F Family Manual
3
Rev B1f
C
HAPTER
5:
PC
I
NTERFACE
This product interfaces with a PC using a PCI Express Mini Card
(mPCIe) connection; a small-form-factor, high-performance, rugged
peripheral interconnect technology first introduced for use in
laptops and other portable computers.
mPCIe’s
small size and powerful performance, combined with
perfect software compatibility with PCI and PCIe peripheral designs,
have led to its recent adoption as a go-to standard for embedded
Data Acquisition and Control, and many other applications.
Although mPCIe is a broadly-adopted industry standard, the actual
connection to the computer shares a specification with mSATA:
both mSATA and mPCIe use the same edge-connector. In fact, well-
designed PCs can automatically detect and configure their onboard
connectors to work with either mPCIe or mSATA devices
–
and,
according to the standards for mPCIe and mSATA they are
supposed
to do so! However, some PC manufacturers ship computers that
only
support mSATA devices. Please confirm in your PC
documentation that your edge-connector is
actually
PCI Express
Mini Card compliant before installing this, or any, mPCIe card.
Damage might occur if you install an mPCIe device into a computer
that only supports mSATA.
mPCIe defines mounting holes for securing the otherwise loose end
of the card, so it is impossible for these cards to wiggle or flap
themselves loose (which was a recurring problem with the older PCI
Mini devices). Eliminating this concern for PCI Express Mini Cards is
a major reason this standard has seen rapid adoption by the Data
Acquisition and Control industry. Unfortunately, a variety of
mounting standoff lengths exist; ACCES offers stand-off kits in both
2mm and 2.5mm sizes. Some computers may provide stand-offs.
Please consult your computer manufacturer if it requires a different
size.
The mPCIe standard, like its PCI Mini Card predecessor, was
designed assuming use primarily in Laptop or Notebook and similar
devices, where physical dimension is often the paramount design
constraint. In Data Acquisition and Control applications low-weight
and vibration tolerance tend to be of more concern.
C
HAPTER
6:
I/O
I
NTERFACE
Most customers will use the optional cable assembly CAB-mPCIe-
ADIOs D-Sub Miniature 37-pin Male connector.
For Singled-Ended analog inputs connect GND to ADC COMMON.
CAB-mPCIe-DB37M Male 37-Pin Pinout
S.E. Signal (Diff)
Pin
Assignment
GND 1 20 GND
ADC COMMON 2 21 ADC Ch 0 (Ch 0+)
ADC Ch 1 (Ch 0-) 3 22 ADC Ch 2 (Ch 2+)
ADC Ch 3 (Ch 2-) 4 23 ADC Ch 4 (Ch 4+)
ADC Ch 5 (Ch 4-) 5 24 ADC Ch 6 (Ch 6+)
ADC Ch 7 (Ch 6-) 6 25 GND
GND 7 26 DAC 0
DAC 1 8 27 DAC 2
DAC 3 9 28 GND
GND 10 29 VCCio
1
DIO 15 11 30 DIO 14
DIO 13 12 31 DIO 12
DIO 11 13 32 DIO 10
DIO 9 14 33 DIO 8
DIO 7 15 34 DIO 6
DIO 5 16 35 DIO 4
DIO 3 17 36 DIO 2
DIO 1 18 37 DIO 0
Digital GND 19
1
: VCCio pin outputs fused 3.3VDC on COTS models. -TTL MCOTS
option converts VCCio into a user input between 1.65VDC and
5.5VDC
For customers needing deeper integration the on-card connector is
a 40-pin latching Molex 501190-4017 connector. The mating
connector is the Molex 501189-4010.
40-Pin latching wire-to-board connector
S.E. Signal (Diff)
Pin
Assignment
ADC Ch 0 (Ch 0+) 1
2
ADC Ch 4 (Ch 4+)
ADC Ch 1 (Ch 0-) 3
4
ADC Ch 5 (Ch 4-)
GND 5
6
GND
ADC Ch 2 (Ch 2+) 7
8
ADC Ch 6 (Ch 6+)
ADC Ch 3 (Ch 2-) 9
10 ADC Ch 7 (Ch 6-)
GND 11 12 GND
COMMON 13 14 GND
GND 15 16 GND
DAC0 17 18 DAC1
DAC2 19 20 DAC3
GND 21 22 GND
VCCio
1
23 24 Digital GND
DIO8 25 26 DIO0
DIO9 27 28 DIO1
DIO10 29 30 DIO2
DIO11 31 32 DIO3
DIO12 33 34 DIO4
DIO13 35 36 DIO5
DIO14 37 38 DIO6
DIO15 39 40 DIO7
Alternately, custom hardware cables and/or interfaces can be
produced to fit your specific application requirement.
