Chapter 4 Register structure and format 35
I2 to I0
Selects the interrupt used by an interrupt or DMA driven
data transfer.
Interrupt level
INL2
INL1
INL0
N/A
0
0
0
N/A
0
0
1
IRQ2
0
1
0
IRQ3
0
1
1
IRQ4
1
0
0
IRQ5
1
0
1
IRQ6
1
1
0
IRQ7
1
1
1
Note: Make sure that the IRQ level you choose is not being used by
another I/O device.
DMAE
Disable/Enable PCL-818L 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 PCL-818L to
memory.
Note: You must program the PC's 8237 DMA controller and the DMA
page register before you set DMAE to 1.
ST1 to ST0
Trigger source
Trigger source
ST1
ST0
Software trigger
0
X
External trigger
1
0
Pacer trigger
1
1
Summary of Contents for PCL-818L
Page 1: ...PCL 818L High performance DAS card with programmable gain ...
Page 5: ...Chapter 1 General information 1 1 General information C H A P T E R ...
Page 13: ...Chapter 2 Installation 9 C H A P T E R 2 Installation ...
Page 25: ...Chapter 3 Signal connections 21 3 Signal connections C H A P T E R ...
Page 31: ...Chapter 4 Register structure and format 27 4 Register structure and format C H A P T E R ...
Page 41: ...Chapter 5 A D conversion 37 C H A P T E R 5 A D conversion ...
Page 47: ...Chapter 6 D A conversion 43 6 D A conversion C H A P T E R ...
Page 50: ...46 PCL 818L User s Manual ...
Page 51: ...Chapter 7 Digital input and output 47 7 Digital input and output C H A P T E R ...
Page 53: ...Chapter 8 Programmable counter timer 49 8 Programmable timer counter C H A P T E R ...
Page 61: ...Chapter 9 Direct memory access operation 57 9 Direct memory access operation C H A P T E R ...
Page 64: ...60 PCL 818L User s Manual ...
Page 65: ......
Page 68: ...Appendix C PC I O port address map 65 C PC I O port address map A P P E N D I X ...
Page 70: ...Appendix D Calibration 67 D Calibration A P P E N D I X ...
Page 73: ...70 PCL 818L User s Manual ...
Page 75: ...2 PCL 818L User s Manual ...