at91rm3400 ATMEL Corporation, at91rm3400 Datasheet - Page 235

• Manufacturer Part Number: at91rm3400
• Description: Atmel Advanced At91 Arm Microcontroller
• Manufacturer: ATMEL Corporation

Master Mode Flow Diagram
Figure 74. Master Mode Flow Diagram
1790A–ATARM–11/03
SPI_RDR(RD) = Serializer
Serializer = SPI_TDR(TD)
NPCS = SPI_TDR(PCS)
Delay DLYBCS
Delay DLYBCT
Delay DLYBS
Data Transfer
NPCS = 0xF
SPI Enable
RDRF = 1
TDRE = 1
TDRE
TDRE
0
1
1
PS
Variable peripheral
0
1
0
Fixed peripheral
NPCS = SPI_MR(PCS)
New peripheral
NPCS = SPI_TDR(PCS)
SPI_TDR(PCS)
Delay DLYBCS
NPCS = 0xF
1
PS
Variable peripheral
0
Same peripheral
Fixed peripheral
AT91RM3400
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