Chapter 4
Register Descriptions
© National Instruments Corporation
4-5
SCXI-1163 User Manual
Status Registers
The Status Registers are 1-bit read-only registers that indicate the primary (jumper-set) mode of
operation and the mode of operation currently driving the outputs. The register at address 0002
holds the Primary Mode Status; the register at address 0003 holds the Output Mode Status.
Primary Mode Status Register
A 1 indicates that the primary mode of operation is set for parallel writes, while a 0 indicates that
the primary mode of operation is set for serial writes.
Output Mode Status Register
A 1 indicates that the outputs are being set by the data contents of the data register, while a 0
indicates that the outputs are being set in parallel by the levels seen at the rear connector.