Chapter 20 Serial Communication Interface (S12SCIV5)
MC9S12XE-Family Reference Manual , Rev. 1.19
724
Freescale Semiconductor
TXD: Transmit Pin
20.1.2
Features
The SCI includes these distinctive features:
•
Full-duplex or single-wire operation
•
Standard mark/space non-return-to-zero (NRZ) format
•
Selectable IrDA 1.4 return-to-zero-inverted (RZI) format with programmable pulse widths
•
13-bit baud rate selection
•
Programmable 8-bit or 9-bit data format
•
Separately enabled transmitter and receiver
•
Programmable polarity for transmitter and receiver
•
Programmable transmitter output parity
•
Two receiver wakeup methods:
— Idle line wakeup
— Address mark wakeup
•
Interrupt-driven operation with eight flags:
— Transmitter empty
— Transmission complete
— Receiver full
— Idle receiver input
— Receiver overrun
— Noise error
— Framing error
— Parity error
— Receive wakeup on active edge
— Transmit collision detect supporting LIN
— Break Detect supporting LIN
•
Receiver framing error detection
•
Hardware parity checking
•
1/16 bit-time noise detection
20.1.3
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
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
S12XE
products
in
208
MAPBGA
packages