MC9S08AW16CFUE Datasheet, PDF (185/324 Pages) Freescale Semiconductor, Inc – MC9S08AW60 Features

Figure 11-3 shows the receiver portion of the SCI.
INTERNAL BUS
Chapter 11 Serial Communications Interface (S08SCIV2)
16 × BAUD
RATE CLOCK
DIVIDE
BY 16
(READ-ONLY)
SCID – Rx BUFFER
FROM RxD PIN
M
DATA RECOVERY
11-BIT RECEIVE SHIFT REGISTER
H876543210L
SHIFT DIRECTION
LOOPS
SINGLE-WIRE
WAKE
WAKEUP
RSRC
LOOP CONTROL
ILT
LOGIC
RWU
FROM
TRANSMITTER
RDRF
RIE
IDLE
ILIE
Rx INTERRUPT
REQUEST
OR
ORIE
FE
FEIE
ERROR INTERRUPT
REQUEST
NF
NEIE
PE
PARITY
PT
CHECKING
PF
PEIE
Figure 11-3. SCI Receiver Block Diagram
11.2 Register Definition
The SCI has eight 8-bit registers to control baud rate, select SCI options, report SCI status, and for
transmit/receive data.
MC9S08AW60 Data Sheet, Rev 2
Freescale Semiconductor
185