MMC2114 MOTOROLA [Motorola, Inc], MMC2114 Datasheet - Page 381

• Manufacturer Part Number: MMC2114
• Description: M CORE Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

17.12 Receiver
17.12.1 Frame Length
17.12.2 Receiving a Frame
MMC2114 • MMC2113 • MMC2112 — Rev. 1.0
MOTOROLA
TRANSMITTER
FROM TXD OR
RXD
LOOPS
RSRC
CONTROL
LOOP
SYSTEM
CLOCK
Serial Communications Interface Modules (SCI1 and SCI2)
The receiver can handle either 8-bit or 9-bit data. The state of the M bit
in SCICR1 selects frame length. When receiving 9-bit data, bit R8 in
SCIDRH is the ninth bit (bit 8).
When the SCI receives a frame, the receive shift register shifts the frame
in from the RXD pin.
Figure 17-15. SCI Receiver Block Diagram
Freescale Semiconductor, Inc.
For More Information On This Product,
INTERRUPT
INTERRUPT
BAUD DIVIDER
REQUEST
REQUEST
RDRF/OR
SBR[12:0]
WAKE
RAF
RE
ILT
PE
PT
M
IDLE
Go to: www.freescale.com
RECOVERY
DATA
CHECKING
WAKEUP
PARITY
Serial Communications Interface Modules (SCI1 and SCI2)
LOGIC
IDLE
ILIE
RIE
IPBUS
H
8
11-BIT RECEIVE SHIFT REGISTER
7
RDRF
SCI DATA REGISTER
OR
6
5
4
R8
FE
NF
PE
3
Advance Information
2
1
0
L
Receiver
RWU
381