Datasheet

SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
430
25.10.2.2 Read is Controlled by NCS (READ_MODE = 0)
Figure 25-9 shows the typical read cycle. The read data is valid t
PACC
after the falling edge of the NCS signal and
remains valid until the rising edge of NCS. Data must be sampled when NCS is raised. In that case, the
READ_MODE must be set to 0 (read is controlled by NCS): the SMC internally samples the data on the rising
edge of Master Clock that generates the rising edge of NCS, whatever the programmed waveform of NRD may be.
Figure 25-9. READ_MODE = 0: Data is sampled by SMC before the rising edge of NCS
Data Sampling
t
PACC
MCK
D[15:0]
A[23:2]
NBS0,NBS1,
A0, A1
NCS
NRD