Figure – Rainbow Electronics AT91CAP9S250A User Manual
Page 195
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195
6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
Figure 22-27. Read Access with NWAIT Assertion in Frozen Mode (EXNW_MODE = 10)
EXNW_MODE = 10 (Frozen)
READ_MODE = 0 (NCS_controlled)
NRD_PULSE = 2, NRD_HOLD = 6
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
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