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PC312XDP512F0CFVR Datasheet(PDF) 493 Page - Freescale Semiconductor, Inc

Part # PC312XDP512F0CFVR
Description  HCS12X Microcontrollers
PDF  1348 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

PC312XDP512F0CFVR Datasheet(HTML) 493 Page - Freescale Semiconductor, Inc

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Chapter 11 Serial Communication Interface (S12SCIV5)
MC9S12XDP512 Data Sheet, Rev. 2.21
Freescale Semiconductor
493
11.4
Functional Description
This section provides a complete functional description of the SCI block, detailing the operation of the
design from the end user perspective in a number of subsections.
Figure 11-14 shows the structure of the SCI module. The SCI allows full duplex, asynchronous, serial
communication between the CPU and remote devices, including other CPUs. The SCI transmitter and
receiver operate independently, although they use the same baud rate generator. The CPU monitors the
status of the SCI, writes the data to be transmitted, and processes received data.
Figure 11-14. Detailed SCI Block Diagram
SCI Data
Receive
Shift Register
SCI Data
Register
Transmit
Shift Register
Register
Baud Rate
Generator
SBR12:SBR0
Bus
Transmit
Control
÷16
Receive
and Wakeup
Data Format
Control
Control
T8
PF
FE
NF
RDRF
IDLE
TIE
OR
TCIE
TDRE
TC
R8
RAF
LOOPS
RWU
RE
PE
ILT
PT
WAKE
M
Clock
ILIE
RIE
RXD
RSRC
SBK
LOOPS
TE
RSRC
IREN
Ir_RXD
TXD
Ir_TXD
R16XCLK
R32XCLK
TNP[1:0]
IREN
Transmit
Encoder
Receive
Decoder
SCRXD
SCTXD
Infrared
Infrared
TC
TDRE
IDLE
Active Edge
Detect
Break Detect
RXD
BKDFE
BERRM[1:0]
BKDIE
BKDIF
RXEDGIE
RXEDGIF
BERRIE
BERRIF
SCI
Interrupt
Request
LIN Transmit
Collision
Detect



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