National Instruments 653X Manuale Utente

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© National Instruments Corporation
D-1
D
Hardware Considerations
This appendix covers several hardware considerations for your 
653device. As an advanced user, you can use these sections to understand 
how the hardware works in your 653device.
Block Diagrams
Figure D-1.  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