©
National Instruments Corporation
D-1
D
Hardware Considerations
This appendix covers several hardware considerations for your NI 653
X
.
As an advancbed user, you can use these sections to understand how your
NI 653
X
hardware works.
Block Diagrams
Figure D-1.
NI AT-DIO-32HS Block Diagram
DAQ-DIO
Counters
and
Timers
DMA/
Interrupt
Requests
Handshaking
and
Control
Data Latches
and
Drivers
Data Lines
Data Lines
(32)
(16)
AT
Plug and Play
Interface
A
T
I/O Channel
EEPROM
RTSI Bus
RTSI
Interface
Control
Lines (8)
I/O
Connector
Clock
Selection
Internal
FIFOs
Bus
Interface
Request
Processing
20 MHz
Oscillator