Chapter 3
Hardware Overview
Getting Started with Your PCI/PXI-6810 SDA
3-2
©
National Instruments Corporation
Figure 3-1.
6810 Device Block Diagram
Functional Unit Descriptions
MITE ASIC
The MITE ASIC serves as an interface to the PCI bus. It provides DMA
controllers to transfer data to and from system memory.
DAQ DIO ASIC
The DAQ DIO ASIC buffers and formats parallel data. It has two
independent data paths, one dedicated to each serial channel.
Numerically Controlled Oscillator (NCO)
Using the instrument driver, you can set the NCO to a frequency that
divides down well to the bit rate for your application. The instrument
driver will set up the NCO in response to your bit rate requirements.
RS-232 Data
Channel 0
RS-485
Channel 0
Adjustable Voltage
Serial Transceiver 0
Adjustable Voltage
Clock Transceiver
Adjustable Voltage
Serial Transceiver 1
RS-232 Data
Channel 1
RS-485
Channel 1
MITE
ASIC
DAQ DIO
ASIC
Parallel
Data
Numerically Controled
Oscillator
Serial Channel 1
(Input or Output)
Serial Channel 0
(Input or Output)
Serial Data Processing
Timer 0
Timer 1
PCI Bus