Datasheet

UART Modules
MOTOROLA MCF5206e USER’S MANUAL 12-7
Figure 12-4. Transmitter and Receiver Functional Diagram
W
R
R/W
R/W
W
R
UART SERIAL CHANNEL
UART COMMAND REGISTER (UCR)
EXTERNAL INTERFACE
UART MODE REGISTER 1 (UMR1)
UART MODE REGISTER 2 (UMR2)
UART STATUS REGISTER (USR)
TRANSMIT HOLDING REGISTER
TRANSMIT SHIFT REGISTER
RECEIVER HOLDING REGISTER 1
RECEIVER HOLDING REGISTER 2
RECEIVER HOLDING REGISTER 3
RECEIVER SHIFT REGISTER
TRANSMIT
BUFFER (UTB)
(2 REGISTERS)
RECEIVE
BUFFER (URB)
(4 REGISTERS)
FIFO
TXD
RXD
Fr
eescale S
emiconduct
or
, I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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