National Instruments 653X Manuale Utente

long-pulse protocol

input handshaking sequence 

(figure), 3-35

input state machine (figure), 3-36
input timing diagram (figure), 3-37
output handshaking sequence 

(figure), 3-38

output state machine (figure), 3-39
output timing diagram (figure), 3-40

polarity for handshaking I/O

comparison of handshaking protocols 

(table),  3-4 to 3-5

controlling line polarity, 2-8
selecting polarity, 2-8

start and stop trigger

change detection, 2-28 to 2-29
pattern I/O, 2-20

start trigger

change detection, 2-28
pattern I/O, 2-19

trailing-edge protocol

input handshaking sequence 

(figure), 3-25

input state machine (figure), 3-25
input timing diagram (figure), 3-26
output handshaking sequence 

(figure), 3-27

output state machine (figure), 3-27
output timing diagram (figure), 3-28

applications, choosing correct mode for 

(table), 2-1

asynchronous handshaking protocol, 3-12
AT-DIO-32HS

benchmark results (table), E-4
block diagram, D-1
installation, 1-7 to 1-8
support for DMA transfers (table), E-2

benchmark results. See optimizing transfer 

rates.

block diagrams

AT-DIO-32HS, D-1
DAQCard-6533 for PCMCIA, D-2
PCI-DIO-32HS, PCI/PXI-7030/6533, and 

PXI-6533, D-3

PCI/PXI-6534, D-4

burst handshaking protocol

comparison of protocols (table), 

3-4 to 3-5

input timing diagrams, 3-5 to 3-11

default timing diagram (figure), 3-8
PCLK reversed (figure), 3-10
transfer example (figure), 3-6

maximum transfer rate (table), E-3
output timing diagrams, 3-5 to 3-11

default timing diagram (figure), 3-9
PCLK reversed (figure), 3-11
transfer example (figure), 3-6

overview, 2-7, 3-5
PCLK signal direction, 2-7 to 2-8

bus interfaces

RTSI and PXI trigger bus interfaces, 

D-10 to D-11

specifications, A-3

cable selection and termination, D-6 to D-9

Schottky-diode termination 

scheme, D-7 to D-9

transmission line terminations 

(figure), D-8

change detection, 2-26 to 2-33

connecting signals, 2-31
continuous or finite data transfer, 

2-30 to 2-31

continuous input, 2-30