Freescale Semiconductor MCF5480 - Manual (Page 811)

Software Environment
MCF548x Reference Manual, Rev. 3
Freescale Semiconductor 26-49
26.7.2 Configuration
26.7.2.1 UART Mode
The following is a sample initialization sequence for UART mode.
Table 26-41. Sample Initialization Sequence for UART Mode
Step
No.
Register Value Details Meaning
1 PSCSICR 08 RxDCD=1 DCD input effects receiver
SIM[2:0]=000 UART mode
2 PSCCSR DD RCS[3:0]=1101 Receiver baud rate is made from PSC timer
TCS[3:0]=1101 Transmitter baud rate is made from PSC timer
3 PSCCTUR 00 CT[15:0]=108 (dec) Divide sys_clk by 108. If f(sys_clk) = 33.3333 MHz,
baud rate is 9600 bps.
PSCCTLR 6C
4 PSCCR 20 MISC=010 Reset receiver and RxFIFO
30 MISC=011 Reset transmitter and TxFIFO
40 MISC=100 Reset all error status
50 MISC=101 Reset break change interrupt
10 MISC=001 Reset MR pointer
5 PSCIMR 8700 IPC=1 Enable input port change interrupt
DB=1 Enable delta break interrupt
RxRDY or FU=1 Enable receiver interrupt/request
TxRDY=1 Enable transmitter interrupt/request
6 PSCACR 03 IEC1=1 Enable state change of DCD
IEC0=1 Enable state change of PSCnCTS
7 PSCMR1 23 RxRTS=0 Receiver has no effect on PSCnRTS
RxIRQ=0 RX interrupt is from RxRDY (one byte)
ERR=1 (fixed) Block error mode
PM[1:0]=00, PMT=0 even parity
BC[1:0]=11 8 bit
8 PSCMR2 37 CM[1:0]=00 Normal mode (not test mode)
TxRTS=1 PSCnRTS is controlled by transmitter
TxCTS=1 PSCnCTS controls transmitter
SB[3:0]=0111 1 stop bit