ATXMEGA128B1 Datasheet, PDF (85/138 Pages) ATMEL Corporation – 8/16-bit Atmel XMEGA B1 Microcontroller

36.15 SPI characteristics
Figure 36-5. SPI interface requirements in master mode
SS
tMOS
SCK
(CPOL = 0)
SCK
(CPOL = 1)
MISO
(Data Input)
MOSI
(Data Output)
tMIS
tMIH
MSB
tMOH
MSB
Figure 36-6. SPI timing requirements in slave mode
SS
tSSS
SCK
(CPOL = 0)
SCK
(CPOL = 1)
MOSI
(Data Input)
tSOSSS
MISO
(Data Output)
tSIS
tSIH
MSB
tSOS
MSB
tSCKR
tSCKF
tSCKW
tSCKW
tSCK
LSB
LSB
tMOH
tSCKR
tSCKF
tSSH
tSSCKW
tSSCKW
tSSCK
LSB
LSB
tSOSSH
XMEGA B1 [DATASHEET] 85
8330C–AVR–07/2012