National Instruments 653X User Manual

Page 139

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Index

653X User Manual

I-4

ni.com

rate of data transfer, 2-18 to 2-19
triggering data transfer, 2-19 to 2-21
width of data to transfer, 2-17

delay, programmable, handshaking

protocol, 2-8 to 2-9

digital I/O specifications, A-1 to A-2
digital lines. See static digital lines.
digital patterns and waveforms. See pattern

I/O.

DIOA<0..7> signal (table), C-4
DIOB<0..7> signal (table), C-4
DIOC<0..7> signal (table), C-5
DIOD<0..7> signal, description (table), C-5
DMA or interrupt transfers

change detection, 2-31
devices that support DMA transfers

(table), E-2

handshaking I/O, 2-10
pattern I/O, 2-22

DPULL signal

description (table), C-5
power-on state, D-5

E

edge-based handshaking protocols. See signal

edge-based handshaking protocols.

environment specifications, A-4 to A-5
equipment, optional, for connecting

signals, C-7

F

finite data transfer. See continuous or finite

data transfer.

G

GND signal, description (table), C-5

H

handshaking I/O, 2-6 to 2-17. See also

handshaking I/O timing diagrams.

ACK/REQ signal polarity, 2-8
connecting signals, 2-10 to 2-11
continuous or finite data

transfer, 2-9 to 2-10

continuous input, 2-9
continuous output, 2-9 to 2-10
DMA or interrupt transfers, 2-10
finite, 2-9

direction of data transfer, 2-6
maximum transfer rates (table),

E-1 to E-2

port and timing controller combinations

(table), 2-6

programmable delay, 2-8 to 2-9
programming, 2-12 to 2-17

buffered handshaking I/O in NI-DAQ

(figure), 2-13

handshaking input in

LabVIEW/LabVIEW RT
(figure), 2-15

handshaking output in

LabVIEW/LabVIEW RT
(figure), 2-16

unbuffered handshaking I/O in

NI-DAQ (figure), 2-14

protocols

burst protocol, 2-7 to 2-8
deciding on a protocol, 2-7

startup sequence, 2-11 to 2-12

controlling line polarities, 2-12
initialization order, 2-11 to 2-12

when to use (table), 2-1
width of data to transfer, 2-6

handshaking I/O timing diagrams, 3-4 to 3-40

8255-emulation protocol, 3-12 to 3-17

input handshaking sequence

(figure), 3-12 to 3-17

input state machine (figure), 3-14

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