Chapter 12 Serial Communication Interface (S12SCIV6)
S12ZVHY/S12ZVHL Family Reference Manual Rev. 1.05
Freescale Semiconductor
477
•
Receiver framing error detection
•
Hardware parity checking
•
1/16 bit-time noise detection
12.1.3
Modes of Operation
The SCI functions the same in normal, special, and emulation modes. It has two low power modes, wait
and stop modes.
•
Run mode
•
Wait mode
•
Stop mode
12.1.4
Block Diagram
is a high level block diagram of the SCI module, showing the interaction of various function
blocks.
Figure 12-1. 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
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
Baud Rate
Generator
Receive
Baud Rate
Transmit
Generator