Freescale Semiconductor MPC5748G EVB, User Manual

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MPC5748G EVB User Guide, User Guide, Rev. 0, 08/2015
22 Freescale Semiconductor, Inc.
6.6. FlexRay (P2, P3, J1, J2, J3, J4)
The EVB incorporates two FlexRay TJA1080TS/N interfaces connected to MCU FlexRay channels A
and B and routed to two Molex 1.25mm pitch PicoBlade shrouded headers (standard on many Freescale
EVB’s). Jumpers are provided to disconnect the MCU signals from the FlexRay interface if required as
well as providing general configuration.
By default, all of the jumper headers are fitted which routes the MCU signals to the FlexRay physical
interface as well as configuring the controller for a default mode of operation (Transmitter enabled,
Receiver enabled, not in low power mode). Please consult the FlexRay transceiver and general FlexRay
specifications before changing any of the mode jumpers.
Table 15. FlexRay Configuration Jumpers (J1, J2, J3, J4)
Jumper Position PCB Legend Description
FlexRay A
J3
Posn 1-2
FITTED ( D )
TX
MCU PC5 is connected to FlexRay A transceiver TX
Removed MCU PC5 is not connected to FlexRay A transceiver TX
J3
Posn 3-4
FITTED ( D )
TXEN
MCU PE2 is connected to FlexRay A transceiver TXEN
Removed MCU PE2 is not connected to FlexRay A transceiver TXEN
J3
Posn 5-6
FITTED ( D )
RX
MCU PE3 is connected to FlexRay A transceiver RX
Removed MCU PE3 is not connected to FlexRay A transceiver RX
J2
Posn 1-2
FITTED ( D )
BGE
FlexRay A PHY Bus Guardian Enable (Transmitter is enabled
)
Removed
FlexRay A PHY transmitter is disabled (Receive only mode)
J2
Posn 3-4
FITTED ( D )
EN
FlexRay A PHY is enabled
Removed
FlexRay A PHY is disabled
J2
Posn 5-6
FITTED ( D )
STBN
FlexRay A PHY will not enter Standby Mode
Removed
FlexRay A PHY will enter Standby Mode
J2
Posn 7-8
FITTED ( D )
WAKE
FlexRay A PHY Wakeup signal pulled low
Removed
FlexRay A PHY Wakeup signal pulled high
FlexRay B
J4
Posn 1-2
FITTED ( D )
TX
MCU PE4 is connected to FlexRay B transceiver TX
Removed MCU PE4 is not connected to FlexRay B transceiver TX
J4
Posn 3-4
FITTED ( D )
TXEN
MCU PC4 is connected to FlexRay B transceiver TXEN
Removed MCU PC4 is not connected to FlexRay B transceiver TXEN
J4
Posn 5-6
FITTED ( D )
RX
MCU PE5 is connected to FlexRay B transceiver RX
Removed MCU PE5 is not connected to FlexRay B transceiver RX
J1
Posn 1-2
FITTED ( D )
BGE
FlexRay B PHY Bus Guardian Enable (Transmitter is enabled
)
Removed
FlexRay B PHY transmitter is disabled (Receive only mode)
J1
Posn 3-4
FITTED ( D )
EN
FlexRay B PHY is enabled
Removed
FlexRay B PHY is disabled
J1
Posn 5-6
FITTED ( D )
STBN
FlexRay B PHY will not enter Standby Mode
Removed
FlexRay B PHY will enter Standby Mode
J1
Posn 7-8
FITTED ( D )
WAKE
FlexRay B PHY Wakeup signal pulled low
Removed
FlexRay B PHY Wakeup signal pulled high
The FlexRay
interface is in the top
right corner of the
EVB on the top edge