Atmel Xplained Evaluation Board AT32UC3A3-XPLD AT32UC3A3-XPLD Data Sheet
Product codes
AT32UC3A3-XPLD
416
32072H–AVR32–10/2012
AT32UC3A3
Figure 21-9. Slave Mode Functional Block Diagram
Shift Register
SPCK
SPIENS
LSB
MSB
NSS
MOSI
SPI
Clock
TDRE
TDR
TD
RDRF
OVRES
CSR0
CPOL
NCPHA
BITS
SPIEN
SPIDIS
MISO
UNDES
RDR
RD
4 - Character FIFO
0
1
RXFIFOEN