Jameco-electronics Rabbit 3000 Manuel d'utilisateur Page 308

  • Télécharger
  • Ajouter à mon manuel
  • Imprimer
  • Page
    / 349
  • Table des matières
  • MARQUE LIVRES
  • Noté. / 5. Basé sur avis des utilisateurs
Vue de la page 307
Users Manual 299
B.1.12.2 Short Chip Select Timing
When short chip selects are enabled for read cycles, the chip select signals are active only
for the last part of the bus cycle. Wait states are inserted between T1 and T2, so this will
have no effect on the duration of the chip select signals in this mode. The timing diagrams
below illustrate the actual timing for the different divided cases. In these cases the chip
selects are two clock cycles (of the fast oscillator) long.
Figure B-3. Short Chip Select Timing: CLK/8, Read Operation
oscillator
ADDR
DATA
T1 T2
Valid
/OEx
/CSx
clock
divide-b
-8 mode
Vue de la page 307
1 2 ... 303 304 305 306 307 308 309 310 311 312 313 ... 348 349

Commentaires sur ces manuels

Pas de commentaire