Programming instructions

© National Instruments Corporation 7-1 DAQ Hardware Overview Guide
7
PC-TIO-10 Timing I/O Device
This chapter contains overview information on the PC-TIO-10 timing
I/O device.
PC-TIO-10 Counter/Timer Operation
This section describes the operation of the counter/timer chips in the
PC-TIO-10 device.
Am9513-Based Device Counter/Timer Operation
The PC-TIO-10 contains two Advanced Micro Devices (AMD) Am9513
System Timing Controller (STC) chips, each of which provides five
independent 16-bit counter/timers and a 4-bit programmable frequency
output, FOUT. Figure 7-1 illustrates the 16-bit counters available on the
TIO devices.
Figure 7-1.
Counter Block Diagram
Each counter has a SOURCE input, a GATE input, and an output labeled
OUT.
The counters can use several timebases for counting operations. A counter
can use the signal supplied at any of the Am9513 five SOURCE or GATE
GATE
SOURCE
Counter OUT