Chapter3 HardwareOverview
ATE Series User Manual 3-18 ni.com
Digital I/O
The AT E Series devices contain eight lines of DIO for general-purpose
use.You can individually configure each line through software for either
input or output. The AT-MIO-16DE-10 has 24 additional DIO lines,
configured as three 8-bit ports: PA<0..7>, PB<0..7>, and PC<0..7>. You
canconfigure each port for both input and output in various combinations,
withsome handshaking capabilities. At system startup and reset, the d igital
I/O ports are all high impedance.
The hardwareup /downcontrol for general-purpose co unters0 and 1 are
connected onboard to DIO6 and DIO7, respectively.Thus, you can use
DIO6 and DIO7 toc ontrol the general-purpose counters. The up/down
control signals are input only and do not affect the operation of the
DIO lines.
Timing Signal Routing
The DAQ-STC providesa very flexible interface for connecting timing
signalsto other devices or external circuitry. The AT E Series device uses
the RTSI bus for interconnecting timing signals between devices and
the Programmable Function Input (PFI) pins on the I/O connector for
connectingto external circuit ry. These connections are designed to enable
the AT E Series device to both control and be controlled by other devices
and circuits.
There are a total of 13 timing signals internal to the DAQ-STCthat can
be controlled byan external source. These timing signals can also be
controlled bysignals generated internally to the DAQ-STC, and these
selections are fully software configurable. Forexample, the sign al routing
multiplexerfor controlling the CONVERT* signal is shown in Figure 3-14.