ICP DAS USA PCI-1002L User Manual page 57

PCI-1002 Series Card
12-bit, 110 kS/s or 44 kS/s Multi-function Board
7.4 AD Conversion
An AD conversion can be initiated in one of three ways: software command, internal programmable
interval timer, or by external trigger to the AD. At the end of the AD conversion, it is possible to
transfer the data in two ways: by polling a status register and reading data when ready, or by
generating a hardware interrupt signal to call service routine. All operating modes are selected by a
control register on the PCI-1002 series.
Before using the AD conversion function, please follow this checklist:
AD data register (BASE+30h)  store the AD conversion data.

AD data conversion ready register (BASE +10h)  Check AD conversion ready.

AD gain control register (BASE+14h)  Select gain.

AD multiplex control register (BASE+10h)  Select analog input channel.

AD mode control register (BASE+18h)  Select trigger mode and interrupt source.

AD software trigger control register (BASE+1Ch).

JP1 to select single-ended or differential input.

3 Trigger logic: Software, Pacer or External trigger.

2 Transfer logic: Polling or Interrupt.

Here's the block diagram:
16/8 to 1
Multi-
CN3
plexer
BASE+10hHgh
Gain 12 bits
Control AD
BASE+14h Trigger
Logic
BASE+1Ch
Software Trigger
User Manual, Ver. 3.0, Jun. 2018, PMH-015-30, Page: 56
Buffer Memory
BASE+30h
CPU