Freescale Semiconductor MPC5675EVB, Руководство пользователя

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MPC5675EVB Users Manual Rev 2.0 July 2010
MPC5675EVB Page 10 of 29
3.6 FlexRAY Configuration
(J19, J27, J25, J26, J28)
The EVB is fitted with 2 FlexRAY physical interfaces connected to MCU FlexRAY channels A and B.
Jumpers J19 and J27 are provided to route the respective MCU signals to the physical interfaces as
described below.
Table 3-8 Flexray MCU Signal Routing Jumpers (J19, J27)
Jumper Position PCB
Legend
Description
J26 (Flex-A)
Posn 1-2
FITTED (D)
TX
MCU B8 is connected to Flexray A transceiver TX
REMOVED MCU B8 is not connected to Flexray A transceiver TX
J26 (Flex-A)
Posn 3-4
FITTED (D)
TXEN
MCU A8 is connected to Flexray A transceiver TXEN
REMOVED MCU A8 is not connected to Flexray A transceiver TXEN
J26 (Flex-A)
Posn 5-6
FITTED (D)
RX
MCU E3 is connected to Flexray A transceiver RX
REMOVED MCU E3 is not connected to Flexray A transceiver RXEN
J24 (Flex-B)
Posn 1-2
FITTED (D)
TX
MCU A7 is connected to Flexray B transceiver TX
REMOVED MCU A7 is not connected to Flexray B transceiver TX
J24 (Flex-B)
Posn 3-4
FITTED (D)
TXEN
MCU B7 is connected to Flexray B transceiver TXEN
REMOVED MCU B7 is not connected to Flexray B transceiver TXEN
J24(Flex-B)
Posn 5-6
FITTED (D)
RX
MCU C5 is connected to Flexray B transceiver RX
REMOVED MCU C5 is not connected to Flexray B transceiver RXEN
The power to the Flexray physical interface is controlled via jumper J28 to allow disconnection if
required.
Table 3-9 Flexray Power Control Jumpers (J25)
Jumper Position PCB
Legend Description
J28 (Flex-PWR)
Posn 1-2
FITTED (D)
12V
12V Flexray circuitry is powered from main 12V input
REMOVED 12V Flexray circuitry is not powered
J28 (Flex-PWR)
Posn 3-4
FITTED (D)
5V
5V Flexray circuitry is powered from 5.0V switching reg
REMOVED 5V Flexray circuitry is not powered
J28 (Flex-PWR)
Posn 5-6
FITTED (D)
VIO
VIO Flexray circuitry is powered from 3.3v
REMOVED VIO Flexray circuitry is not powered
The flexray interface has 4 pins which are used for configuration and are pulled high or low controlled
by a jumper as described in the table below. By default, all of the jumper headers are fitted. Please
consult the Flexray physical interface specification before changing any of these jumpers.