Rainbow-electronics AT89C5132 Manuel d'utilisateur télécharger pdf (Page 9)

9

AT89C5132

4256A–USB–06/03

Figure 4. 48 MHz Frequency Auto-generation

MAIN

USB Connected?

Suspend/Resume

Configure PLL for

Frequency X

Configure Timer 0

SOF Detected?

Timer 0 Overflow?

USB Scheduler

Change Frequency

Resume

Detected?

Yes

No

No

Yes

Yes

No

Yes

No

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