Advantech PCL-818 Series Manual de usuario descargar pdf (Pagina 65)

57 Appendix C

C.13 A/D Control — BASE+09H

Read/write register BASE+09H provides information on the PCL-

818HD/HG/L's operating modes.

Table C-13 Register for A/D Control

INTE Disable/enable generated interrupts

0 Disables the generation of interrupts. No interrupt signal can

be sent to the PC bus.

Enables the generation of interrupts. If DMAE = O the PCL-818HD/HG/

L will generate an interrupt when it completes an A/D conversion. Use

this setting for interrupt driven data transfer.

If DMAE = 1 the PCL-818HD/HG/L will generate an interrupt when it

receives a T/C (terminal count) signal from the PC's DMA controller,

indicating that a DMA transfer has completed. Use this setting for DMA

data transfer. The DMA transfer is stopped by the interrupt caused by the

T/C signal. See DMAE below.

I2 to I0 Selects the interrupt used by an interrupt or DMA driven data

transfer.

Read/Write A/D control

Bit # 7 6 5 4 3 2 1 0

BASE + 09H INTE I2 I1 I0 DMAE ST1 ST0

Interrupt level I2 I1 I0

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

1 2 ... 60 61 62 63 64 65 66 67 68 69 70 ... 73 74

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Advantech PCL-818 Series Manual de usuario Pagina 65