SCXIbus Connector
Appendix C
SCXI-1100 User Manual
C-4
© National Instruments Corporation
Pin
Signal Name
Description (continued)
B23
SPICLK
Serial Peripheral Interface (SPI) Clock – Clocks the
serial data on the MOSI and MISO lines. Open
collector. I/O.
C23
MOSI
Master-Out-Slave-In – Transmits data from the
SCXIbus to the module. Open collector. I/O.
A24
TRIG0
TRIG0 – General-purpose trigger line that the
SCXI-1100 uses to send SCANCLK to other
modules or receive SCANCLK from other modules.
Open collector. I/O.
B24
SS*
Slot Select – When low, enables module
communications over the SCXIbus. Totem pole.
Input.
C24
SCANCON
Scanning Control – Combination output enable and
reload signal for scanning operations. Totem pole.
Input.
* Indicates active low
All other pins are not connected.
Further information is given in Chapter 3, Theory of Operation.
