MC9S12XD256MAL Datasheet, PDF (527/1348 Pages) Freescale Semiconductor, Inc – Freescale’s Scalable Controller Area Network

Data A Received
Receive Shift Register
Data A
Chapter 12 Serial Peripheral Interface (S12SPIV4)
Data B Received
Data C Received
SPIF Serviced
Data B
Data C
SPIF
SPI Data Register
Data A
Data B
Data C
= Unspecified
= Reception in progress
Figure 12-8. Reception with SPIF Serviced in Time
Data A Received
Receive Shift Register
SPIF
Data A
Data B Received
Data C Received
Data B Lost
SPIF Serviced
Data B
Data C
SPI Data Register
Data A
Data C
= Unspecified
= Reception in progress
Figure 12-9. Reception with SPIF Serviced too Late
MC9S12XDP512 Data Sheet, Rev. 2.21
Freescale Semiconductor
527