Configuration and Installation
Chapter 2
SCXI-1163 User Manual
2-16
© National Instruments Corporation
Rear Signal Connector Signal Descriptions, Serial Configuration
Pin
Signal Name
Description
24 or 50
DIG GND
Digital Ground – Supplies the reference for data
acquisition board digital signals and is tied to the
module digital ground. Pin 50 is for DIO-type
boards. Pin 24 is for MIO-type boards. Jumper W3
selects the pin.
25
SERDATIN
Serial Data In – Taps into the SCXIbus MOSI line
to provide serial input data to a module or Slot 0.
26 or 47
SERDATOUT
Serial Data Out – Taps into the SCXIbus MISO line
to accept serial output data from a module. Pin 47
is for DIO-type boards. Pin 26 is for MIO-type
boards. Jumper W5 selects the pin.
27
DAQD*/A
Data Acquisition Board Data/Address Line – Taps
into the SCXIbus D*/A line to indicate to the
module whether the incoming serial stream is data
or address information.
29
SLOT0SEL*
Slot 0 Select – Taps into the SCXIbus INTR* line
to indicate whether the information on MOSI is
sent to a module or to Slot 0.
31 or 37
SERCLK
Serial Clock – Taps into the SCXIbus SPICLK line
to clock the data on the MOSI and MISO lines. Pin
31 is for DIO-type boards. Pin 37 is for MIO-type
boards. Jumper W2 selects the pin.
* Indicates active low.
All other pins are not connected.
Timing Requirements and Communication Protocol
section later in this chapter for more
detailed information on timing.
Rear Signal Connector Signal Descriptions, Parallel Configuration
Pin
Signal Name
Description
47, 45, 43,
In <0..31>
Digital Inputs – The logic levels at these inputs
41, 39, 37,
determine the output states.
35, 33, 31,
29, 27, 25,
23, 21, 19,
17, 15, 13,
11, 9, 7, 5, 3,
1, 48, 46, 44,
42, 40, 38,
36, 34
50
GND
Ground – Supplies ground reference for the parallel
inputs.
