National Instruments 653 Series User Manual page 147

block diagram, D-4
installation, 1-7
support for DMA transfers (table), E-3
PXI-7030/6533 devices
block diagram, D-3
installation, 1-7
R
Real-Time System Integration. See RTSI
REQ<1..2> signal
8255-emulation protocol
input handshaking sequence
(figure), 3-12
input state machine (figure), 3-13
output handshaking sequence
(figure), 3-14
output state machine (figure), 3-15
output timing diagram (figure), 3-16
overview, 3-11
and the STARTTRIG signal, 3-3
burst input timing diagrams
default input timing diagram
(figure), 3-7
PCLK reversed (figure), 3-9
transfer example (figure), 3-6
burst output timing diagrams
default output timing diagram
(figure), 3-8
PCLK reversed (figure), 3-10
transfer example (figure), 3-6
connecting signals
handshaking I/O, 2-21
pattern I/O, 2-13
description (table), C-4
handshaking I/O and pattern I/O
(table), C-1
leading-edge protocol
input handshaking sequence
(figure), 3-27
input state machine (figure), 3-28
© National Instruments Corporation
input timing diagram (figure), 3-29
output handshaking sequence
(figure), 3-30
output state machine (figure), 3-30
output timing diagram (figure), 3-31
level-ACK protocol
input handshaking sequence
(figure), 3-17
input state machine (figure), 3-18
input timing diagram (figure), 3-19
output handshaking sequence
(figure), 3-20
output state machine (figure), 3-20
output timing diagram (figure), 3-21
long-pulse protocol
input handshaking sequence
(figure), 3-32
input state machine (figure), 3-33
input timing diagram (figure), 3-34
output handshaking sequence
(figure), 3-35
output state machine (figure), 3-35
output timing diagram (figure), 3-36
polarity for handshaking I/O
comparison of handshaking protocols
(table), 3-4
controlling line polarity, 2-23
selecting polarity, 2-19
polarity for pattern I/O, 2-7
signal source for pattern I/O
choosing internal or external
source, 2-7
external REQ signal source, 3-2
internal REQ signal source, 3-1
trailing-edge protocol
input handshaking sequence
(figure), 3-22
input state machine (figure), 3-23
input timing diagram (figure), 3-24
output handshaking sequence
(figure), 3-25
I-9
Index
NI 653X User Manual