National Instruments RT Series - Manual (Page 18)

Chapter 3 Hardware Overview
RT Series DAQ Device User Manual 3-2 ni.com
Figure 3-2. PXI RT Series Data Acquisition Hardware
Processor Board
The 7030 processor board contains a microprocessor and support circuitry,
as shown in Figure 3-3. The support circuitry includes a chipset with PCI
controller and ISA bridge, main memory (DRAM), L2 cache (SRAM), and
BIOS. The RT Engine software uses this embedded processor system for
its execution platform.
The DAQ daughterboard resides on the embedded PCI bus, as shown in
Figure 3-3, providing a high-performance system for communication
between the software running on the processor and the DAQ
daughterboard.
The processor board also holds the shared memory that communicates
between the host system and the embedded processor. Refer to the
Host to
RT Series DAQ Device Communication section of this chapter and to
Chapter 3, Software Overview, of the LabVIEW Real-Time User Manual,
for more information about using shared memory in your applications.
1 Processor Board 2 DAQ Daughterboard
1
2