at91sam9g20-cu ATMEL Corporation, at91sam9g20-cu Datasheet - Page 185

• Manufacturer Part Number: at91sam9g20-cu
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

Figure 21-30. NWAIT Assertion in Read Access: Ready Mode (EXNW_MODE = 11)
6384B–ATARM–15-Dec-08
internally synchronized
NWAIT signal
NBS0, NBS1,
NBS2, NBS3,
A0,A1
A[25:2]
NWAIT
MCK
NCS
NRD
6
Assertion is ignored
5
6
5
4
3
4
EXNW_MODE = 11(Ready mode)
READ_MODE = 0 (NCS_controlled)
NRD_PULSE = 7
NCS_RD_PULSE =7
Read cycle
3
2
AT91SAM9G20 Preliminary
2
1
0
1
Wait STATE
0
1
0
Assertion is ignored
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