National Instruments SCXI-1320, User Manual, Page: 62 / 159

Chapter 2 Configuration and Installation
© National Instruments Corporation 2-45 SCXI-1121 User Manual
3. Pull SLOT0SEL* low to deassert the SS* line and establish conditions
for writing a new slot- select number to the Slot 0 Slot-Select Register.
4. If you are not selecting another slot, you should write zero to the Slot 0
Slot-Select Register.
Figure 2-19 illustrates a read of the SCXI-1121 Module ID Register.
Figure 2-19. SCXI-1121 Module ID Register Timing Diagram
For further details on programming these signals, refer to Chapter 5,
Programming .
SLOT0SEL*
SS*
SERCLK
SERDATOUT
T
delay
byte 0 = 2 byte 3 = 0 byte 2 = 0 byte 1 = 0
T
delay
SS* high to SERDATOUT high 350 nsec maximum
0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0