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MPC5668EVB Users Manual Rev 0.1 May 2009
MPC5668EVBUM/D Page 17 of 29
The LIN circuitry is
located in the top edge
of the EVB in an area
titled “LIN”
1
3.7 LIN Configuration (J3, J4, J5, J12,
J13, J14, J15,J16)
The EVB is fitted with two Freescale MCZ33661EF LIN transceivers. The eSCI module incorporates a
hardware controlled LIN master, and as such, the LIN transceivers are connected to the TX and RX signals of
SCI C and D.
For flexibility, the LIN transceivers are connected to a standard 0.1” connector (P7 for LIN-C and P6 for LIN-D)
and a 4 pin molex connector (J2 for LIN-C and J1 for LIN-D) at the top edge of the PCB as shown in the figure
below. For ease of use, the 12V EVB supply is fed to pin1 of the connectors and the LIN transceiver power
input to pin 2. This allows the LIN transceiver to be powered directly from the EVB supply by simply linking
pins 1 and 2 of connector P7/P6 using a 0.1” jumper shunt.
Figure 3-11 LIN Physical Interface Connectors
Along with the MCU signal routing jumpers (J10 / J11), there is are jumpers (J5 / J6) to enable or disable the
LIN transceiver and jumpers (J1 and J2) which determines if the LIN transceiver is operating in master or
slave mode, as defined in the table below.
Table 3-16 LIN Control Jumpers
Jumper Position PCB Legend Description
J5
(LIN C-M)
FITTED (D) LIN-C transceiver is configured for LIN Master mode
REMOVED LIN-C transceiver is configured for LIN Slave mode
J3
(LIN D-M)
FITTED (D) LIN-D transceiver is configured for LIN Master mode
REMOVED LIN-D transceiver is configured for LIN Slave mode
J16 *
(LIN C-EN)
FITTED (D) The LIN-C transceiver is enabled
REMOVED The LIN-C transceiver is disabled
J12 *
(LIN D-EN)
FITTED (D) The LIN-D transceiver is enabled
REMOVED The LIN-D transceiver is disabled
J14 (SCI-C)
FITTED (D)
TXD
MCU TXD-C is routed to LIN Physical
REMOVED MCU TXD-C signal is disconnected LIN Physical
J15 (SCI-C)
FITTED (D)
RXD
MCU RXD-C is routed to LIN Physical
REMOVED MCU RXD-C signal is disconnected LIN Physical
J14 (SCI-D)
FITTED
(D)
TXD
MCU TXD-D is routed to LIN Physical
REMOVED MCU TXD-D signal is disconnected LIN Physical
J15 (SCI-D)
FITTED (D)
RXD
MCU RXD-D is routed to LIN Physical
REMOVED MCU RXD-D signal is disconnected LIN Physical
* Note – Jumpers J3/J5 do NOT route power to LIN transceivers, they only control an enable line on the LIN
device. Power to the LIN transceiver is supplied via connectors P7 / P8, Pin 2.
The Default LIN configuration is with the module enabled in master mode, LIN slave mode can be enabled by
removing jumpers J3 / J5.
LIN
P7/P8
VDD UNREG
LIN VSUP
LIN
GND