414
32072H–AVR32–10/2012
AT32UC3A3
Figure 21-8. Peripheral Deselection
shows different peripheral deselection cases and the effect of the
CSRn.CSAAT and CSRn.CSNAAT bits.
21.7.3.9
Mode fault detection
The SPI is capable of detecting a mode fault when it is configured in master mode and NPCS0,
MOSI, MISO, and SPCK are configured as open drain through the I/O Controller with either
internal or external pullup resistors. If the I/O Controller does not have open-drain capability,
mode fault detection must be disabled by writing a one to the Mode Fault Detection bit in the MR
A
NPCS[0..3]
Write TDR
TDRE
NPCS[0..3]
Write TDR
TDRE
NPCS[0..3]
Write TDR
TDRE
DLYBCS
PCS = A
DLYBCS
DLYBCT
A
PCS = B
B
DLYBCS
PCS = A
DLYBCS
DLYBCT
A
PCS = B
B
DLYBCS
DLYBCT
PCS=A
A
DLYBCS
DLYBCT
A
PCS = A
A
A
DLYBCT
A
A
CSAAT = 0 and CSNAAT = 0
DLYBCT
A
A
CSAAT = 1 and CSNAAT= 0 / 1
A
DLYBCS
PCS = A
DLYBCT
A
A
CSAAT = 0 and CSNAAT = 1
NPCS[0..3]
Write TDR
TDRE
PCS = A
DLYBCT
A
A
CSAAT = 0 and CSNAAT = 0
Summary of Contents for AT32UC3A3128
Page 61: ...61 32072H AVR32 10 2012 AT32UC3A3 PLLEN PLL Enable 0 PLL is disabled 1 PLL is enabled...
Page 592: ...592 32072H AVR32 10 2012 AT32UC3A3 Manchester Configuration Register on page 614...
Page 989: ...989 32072H AVR32 10 2012 AT32UC3A3 37 2 Package Drawings Figure 37 1 TFBGA 144 package drawing...
Page 991: ...991 32072H AVR32 10 2012 AT32UC3A3 Figure 37 3 VFBGA 100 package drawing...
