mc9s12vr48 Freescale Semiconductor, Inc, mc9s12vr48 Datasheet - Page 438
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mc9s12vr48
Manufacturer Part Number
mc9s12vr48
Description
S12 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC9S12VR48.pdf
(592 pages)
- Current page: 438 of 592
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LIN Physical Layer (S12LINPHYV1)
15.4.3.1
The LIN Physical Layer is fully disabled. No wake-up functionality is available. The internal pull-up
resistor is replaced by a high ohmic one (330kΩ) to maintain the LIN Bus pin in the recessive state.
Setting LPE at 1 makes the module leave the Shutdown mode to enter the Normal Mode.
Setting LPE at 0 makes the module leave the Normal or Receive Only Modes and go back to Shutdown
Mode.
438
Reset
Shutdown Mode
TX: Off, RX: Off
TX: Off
RX: On (low power) if LPWUE = 1
RXONLY = 0
TX: On, RX: On (full perf)
LPOC=0
LIN pull-up: strong if LPPUE = 1
LIN pull-up: weak
LIN pull-up: strong if LPPUE = 1
STOP
and
and
Off if LPWUE = 0
LPE = 0
Figure 15-10. LIN Physical Layer Mode Transitions
Shutdown
Standby
Normal
weak if LPPUE = 0
weak if LPPUE = 0
MC9S12VR Family Reference Manual,
Preliminary - Subject to Change Without Notice
LPE = 1
STOP
LPE = 0
RXONLY = 0
RXONLY=1
LPOC=0
LPOC=1
and
or
STOP
(RXONLY=1 or LPOC=1)
(RXONLY=1 or LPOC=1)
Rev. 2.2
STOP
and
TX: Off
RX: On (full perf)
LIN pull-up: strong if LPPUE = 1
LPE = 1
and
Receive Only
weak if LPPUE = 0
Freescale Semiconductor
TX: Transmitter
RX: Receiver
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