Datasheet

Serial Communication Interface (S12SCIV5)
S12XS Family Reference Manual, Rev. 1.13
Freescale Semiconductor 399
14.1.4 Block Diagram
Figure 14-1 is a high level block diagram of the SCI module, showing the interaction of various function
blocks.
Figure 14-1. SCI Block Diagram
SCI Data Register
RXD Data In
Data Out TXD
Receive Shift Register
Infrared
Decoder
Receive & Wakeup
Control
Data Format Control
Transmit Control
Baud Rate
Generator
Bus Clock
1/16
Transmit Shift Register
SCI Data Register
Receive
Interrupt
Generation
Transmit
Interrupt
Generation
Infrared
Encoder
IDLE
RDRF/OR
TC
TDRE
BRKD
BERR
RXEDG
SCI
Interrupt
Request