Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Fiche De Données
Codes de produits
AT91SAM9N12-EK
396
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
Figure 30-27. Read Access with NWAIT Assertion in Frozen Mode (EXNW_MODE = 10)
EXNW_MODE = 10 (Frozen)
READ_MODE = 0 (NCS_controlled)
READ_MODE = 0 (NCS_controlled)
NRD_PULSE = 2, NRD_HOLD = 6
NCS_RD_PULSE =5, NCS_RD_HOLD =3
NCS_RD_PULSE =5, NCS_RD_HOLD =3
A
[25:2]
MCK
NCS
NRD
1
0
4
3
4
3
2
5
5
5
2
2
0
2
1
0
2
1
0
1
Read cycle
Assertion is ignored
NWAIT
internally synchronized
NWAIT signal
FROZEN STATE
NBS0, NBS1,
NBS2, NBS3,
A0,A1
NBS2, NBS3,
A0,A1