Pacer Enable Register - Base+10; Programmable Pacer Reg. - Base+12/13/14/15 - Advantech PCM-3718 Series User Manual

DMAE
Note
ST1 to ST0 Trigger source
Trigger Source
Software trigger
External trigger
Pacer trigger

4.10 Pacer Enable Register - BASE+10

Register BASE+10 enables or disables the PCM-3718's pacer.
TC0

4.11 Programmable Pacer Reg. - BASE+12/13/14/15

These four registers located at addresses BASE+12, BASE+13,
BASE+14 and BASE+15 are used for the Intel 8254 programmable
pacer. Please refer to Chapter 7 Programmable Pacer or 8254 product
literature for detailed application information.
PCM-3718 Series User Manual
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Disable/Enable PCM-3718H/HG/HO DMA transfers.
0 Disables DMA transfer.
1 Enables DMA transfer. Each A/D conversion
initiates two successive DMA request signals. These
signals cause the 8237 DMA controller to transfer
two bytes of conversion data from the PCM-3718
card to memory.
You must program the PC's 8237 DMA controller as
the DMA page register before you set DMAE to1.
ST1
0
1
1
Disable/enable pacer
0 Pacer enabled
1 Pacer disabled
ST0
X
0
1
40