Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Hoja De Datos
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AT91SAM9N12-EK
398
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
Figure 30-29. NWAIT Assertion in Read Access: Ready Mode (EXNW_MODE = 11)
EXNW_MODE = 11(Ready mode)
READ_MODE = 0 (NCS_controlled)
READ_MODE = 0 (NCS_controlled)
NRD_PULSE = 7
NCS_RD_PULSE =7
NCS_RD_PULSE =7
A[25:2]
MCK
NCS
NRD
4
5
6
3
2
0
0
0
1
4
5
6
3
2
1
1
Read cycle
Assertion is ignored
NWAIT
internally synchronized
NWAIT signal
Wait STATE
Assertion is ignored
NBS0, NBS1,
NBS2, NBS3,
A0,A1
NBS2, NBS3,
A0,A1