Motorola MPC533 Reference Manual page 653

Serial Communication Interface
Receiver
Baud Rate
Clock
÷16
10 (11)-Bit RX Shift Register
Data
H (8) 7 6 5 4 3 2 1 0 L
RxD
Pin Buffer
Recovery
MSB All Ones
Parity
Detect
Wake-up
Logic
15 0
SCCxR1 CONTROL Register 1
SCxDR RX Buffer
(READ-ONLY)
15 0
SCxSR STATUS Register
SCI TX SCI Interrupt Internal
Requests Request Data Bus
Figure 15-25. SCI Receiver Block Diagram
MOTOROLA Chapter 15. Queued Serial Multi-Channel Module 15-47
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE