Signal Connections
Chapter 3
SCXI-1162HV User Manual
3-8
© National Instruments Corporation
Rear Signal Connector Signal Descriptions,
Serial Configuration
Pin
Signal
Description
24 or 50
DIGGND
Digital Ground—Supplies the reference for DAQ
board digital signals and is tied to the module
digital ground. Pin 50 is for DIO boards. Pin 24
is for MIO boards and jumper W4 selects it.
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 boards. Pin 26 is for MIO
boards and jumper W6 selects it.
27
DAQD*/A
DAQ 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 boards. Pin 37 is for
MIO boards and jumper W3 selects it.
* Indicates active low.
All other pins are not connected.
See Chapter 2, Timing, of the SCXI-1162HV Register-Level Programmer Manual for
information on serial communication and programming.