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Appendix D Hardware Considerations
653X User Manual D-2 ni.com
Figure D-2. DAQCard-6533 for PCMCIA Block Diagram
DAQ-DIO
Counters
and
Timers
DMA/
Interrupt
Requests
Handshaking
and
Control
Data Latches
and
Drivers
Data Lines
Data Lines
(32)
(16)
PCMCIA
Interface
PCMCIA I/O Channel
Control
Lines (8)
I/O Connector
Clock
Selection
Internal
FIFOs
Bus
Interface
Request
Processing
20 MHz
Oscillator