Measurement Computing USB-4301 - Manual (Page 11)

11
Chapter 3
Functional Details
USB-4301 block diagram
USB-4301 functions are illustrated in the block diagram shown here.
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Interrupt Input
Digital I/O
Digital
input
Digital
output
9513
CTR1 Input
CTR1 Gate
CTR2 Input
CTR2 Gate
CTR2 Output
CTR3 Gate
CTR3 Output
CTR4 Input
CTR4 Gate
CTR4 Output
CTR5 Input
CTR5 Gate
Counter 1
Counter 2
Counter 3
Counter 4
Counter 5
USB
Full-speed
USB 2.0
Compliant
Interface
USB
Microcontroller
Clock
Generator
(7:0)
(7:0)
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1.0/1.67/
3.3/5.0 MHZ
12 MHZ
Data Bus
Figure 1. USB-4301 functional block diagram