MC908QL4 FREESCALE [Freescale Semiconductor, Inc], MC908QL4 Datasheet - Page 153
MC908QL4
Manufacturer Part Number
MC908QL4
Description
M68HC08 Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.MC908QL4.pdf
(226 pages)
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14.9.7 Handling LIN Message Headers
Figure 14-15
Freescale Semiconductor
4. Enable the SLIC module by writing SLCC2:
5. Write SLCC1 to enable SLIC interrupts (if desired).
a. SLCE = 1 to place SLIC module into run mode.
b. BTM = 1 to enable byte transfer mode (default = disabled).
shows how the SLIC module deals with incoming LIN message headers.
ID ARRIVING IN RX BUFFER
SLIC UPDATES SLCBT
READ ID FROM SLCID
HEADER RECEIVED
PROCESS VALID ID
LIN MESSAGE
VALID BREAK
ERROR CODE
AND SYNCH
ID FOR THIS
READ SLCSV
CLEAR SLCF
INTERRUPT
DATA?
NODE
Y
Y
N
?
?
Figure 14-15. Handling LIN Message Headers
N
N
Y
MC68HC908QL4 Data Sheet, Rev. 7
IDENTIFIER-PARITY ERROR
PROCESS ERROR CODE:
PROCESS ERROR CODE:
BYTE FRAMING ERROR
BYTE FRAMING ERROR
SET IMSG BIT
READ SLCSV
INTERRUPT
Initialization/Application Information
LIN BUS IDLE
RETURN TO
EXIT ISR
153
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