Datasheet

Chapter 8 Serial Communication Interface (SCIV4) Block Description
MC9S12E256 Data Sheet, Rev. 1.10
252 Freescale Semiconductor
Figure 8-1. SCI Block Diagram
SCI Data Register
Receive Shift Register
Receive & Wakeup Control
Data Format Control
Transmit Control
Transmit Shift Register
SCI Data Register
BAUD
Generator
IRQ
Generation
IRQ
Generation
RXD Data In
÷16
Bus Clk
Encoder
Infrared
Data Out TXD
Decoder
Infrared
TC Interrupt Request
IDLE Interrupt Request
SCI
Interrupt
Request
RDRF/OR
Interrupt
Request
TDRE
Interrupt
Request