mc9s08qg4 Freescale Semiconductor, Inc, mc9s08qg4 Datasheet - Page 195

• Manufacturer Part Number: mc9s08qg4
• Description: Hcs08 Microcontrollers Microcontroller Family
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
Write:
Write:
Write;
Write:
Wait for TDRE, then write data to SCID
Wait for RDRF, then read data from SCID
A small number of applications will use RWU to manage automatic receiver wakeup, SBK to send break characters, and
R8 and T8 for 9-bit data.
SCIBDH
SCIBDL
SCIS2
SCIS3
SCIID
SCIC1
SCIC2
SCIS1
SCIBDH:SCIBDL
SCFC1
SCIC2
SCIC3
Baud rate = BUSCLK / (16 x SBR12:SBR0)
Module configuration
Local interrupt enables Tx and Rx enable
Interrupt flags
Configure LIN support options and monitor receiver activity
9th data bits
Read: Rx data; write: Tx data
LOOPS
SBR7
TDRE
R7/T7
TIE
R8
SCISWAI
R6/T6
SBR6
TCIE
TC
T8
MC9S08QG8 and MC9S08QG4 Data Sheet, Rev. 4
to set
to configure
to configure
to enable
Figure 14-2. SCI Module Quick Start
direction in
single-wire
Rx/Tx pin
TXDIR
RSRC
RDRF
R5/T5
SBR5
RIE
mode
Module Initialization:
Module Use:
Tx data path
polarity
R4/T4
TXINV
SBR12
SBR4
ILIE
IDLE
M
baud rate
1-wire/2-wire, 9/8-bit data, wakeup, and parity, if used.
interrupts, enable Rx and Tx, RWU
Enable Rx wakeup, SBK sends break character
Rx error interrupt sources. Also controls pin direction in
1-wire modes. R8 and T8 only used in 9-bit data modes.
Local interrupt enables
SBR11
WAKE
R3/T3
Rx error flags
SBR3
ORIE
OR
TE
Chapter 14 Serial Communications Interface (S08SCIV3)
SBR10
BRK13
R2/T2
SBR2
NEIE
ILT
RE
NF
Rx wakeup and send break
R1/T1
SBR1
SBR9
FEIE
RWU
FE
PE
R0/T0
SBR0
SBR8
RAF
PEIE
SBK
PF
PT
195