Serial Communication Interface (S12SCIV5)
MC9S12XHY-Family Reference Manual, Rev. 1.01
Freescale Semiconductor
457
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
electronic components distributor