National Instruments PC-LPM-16/PnP User Manual page 94

Appendix D Register-Level Programming
Counter Mode Register
(Continued)
5–4
PC-LPM-16/PnP User Manual
RL<1..0> Read/Write Select Bits—These bits select data written
to or read from a counter, or these bits send a Counter
Latch command.
The Counter Latch command latches the current count
of the register selected by SC1 and SC0. The next read
from the selected counter returns the latched data.
RL1 RL0
0 0 Counter Latch command
0 1 Read and write least significant
byte only
1 0 Read and write most significant
byte only
1 1 Read and write least significant
byte then most significant byte
D-22
Operation
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