AT32UC3C1512C Automotive Atmel Corporation, AT32UC3C1512C Automotive Datasheet - Page 665

• Manufacturer Part Number: AT32UC3C1512C Automotive
• Manufacturer: Atmel Corporation

Figure 26-8. Peripheral Deselection
26.7.3.9
9166C–AVR-08/11
NPCS[0..3]
NPCS[0..3]
NPCS[0..3]
NPCS[0..3]
Write TDR
Write TDR
Write TDR
Write TDR
TDRE
TDRE
TDRE
TDRE
Mode fault detection
PCS = A
A
A
A
A
CSAAT = 0 and CSNAAT = 0
CSAAT = 0 and CSNAAT = 0
DLYBCT
DLYBCT
DLYBCT
DLYBCT
Figure 26-8 on page 665
CSRn.CSAAT and CSRn.CSNAAT bits.
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
DLYBCS
DLYBCS
DLYBCS
PCS = B
PCS=A
A
PCS = A
A
B
shows different peripheral deselection cases and the effect of the
A
PCS = A
A
A
A
A
CSAAT = 0 and CSNAAT = 1
CSAAT = 1 and CSNAAT= 0 / 1
DLYBCT
DLYBCT
DLYBCT
DLYBCT
DLYBCS
DLYBCS
PCS = B
PCS = A
DLYBCS
A
A
PCS = A
DLYBCS
AT32UC3C
A
A
A
B
665