Measurement-computing PCI-DAS6013 Manual do Utilizador descarregar pdf (Página 35)

PCI-DAS6013 and PCI-DAS6014 User's Guide Specifications

Digital input / output

Digital type

Discrete, 5V/TTL compatible

Number of I/O

Configuration

8 bits, independently programmable for input or output. All pins pulled up to

+5 V via 47 K resistors (default). Positions available for pull down to ground.

Hardware selectable via solder gap.

Input high voltage

2.0 V min, 7.0 V absolute max

Input low voltage

0.8 V max, –0.5 V absolute min

Output high voltage (IOH = -32 mA)

3.80 V min, 4.20 V typ

Output low voltage (IOL = 32 mA)

0.55 V max, 0.22 V typ

Data transfer

Programmed I/O

Power-up / reset state

Input mode (high impedance)

Interrupts

PCI INTA# - mapped to IRQn via PCI BIOS at boot-time

Interrupt enable

Programmable through PLX9080

ADC interrupt sources

(software programmable)

DAQ_ACTIVE: Interrupt is generated when a DAQ sequence is active.

DAQ_STOP: Interrupt is generated when A/D Stop Trigger In is detected.

DAQ_DONE: Interrupt is generated when a DAQ sequence completes.

DAQ_FIFO_1/4_FULL:

Interrupt is generated when ADC FIFO is ¼ full.

DAQ_SINGLE: Interrupt is generated after each conversion completes.

DAQ_EOSCAN: Interrupt is generated after the last channel is converted in

multi-channel scans.

DAQ_EOSEQ: Interrupt is generated after each interval delay during multi-

channel scans.

DAC interrupt sources

(PCI-DAS6014 only, software

programmable)

DAC_ACTIVE: Interrupt is generated when DAC waveform circuitry is

active.

DAC_DONE: Interrupt is generated when a DAC sequence completes.

DAC_FIFO_1/4_EMPTY:

Interrupt is generated DAC FIFO is ¼ empty.

DAC_HIGH_CHANNEL:

Interrupt is generated when the DAC high channel output is

updated.

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