T W R - 9 S 1 2 G 1 2 8
J U N E 2 , 2 0 1 0
U S E R G U I D E
13
Figure 8: JP6 Option Header
● ● JP3
Connects LIN bus to +V input (default)
● ● LIN_PWR
Enables LIN Master mode functionality (default)
2 1
NOTE:
LIN PHY may also be configured as a Master Node using the INH pin. Refer to the LIN
PHY data sheet for details.
LIN-J1 Connector
The TWR-S12G128 supports two, 2 x 2 Molex connectors to interface to the LIN bus. Figure 9
below details the pin-out of the LIN bus connector.
Figure 9: LIN Connector
LIN Signal
4
3
+V
WAKE
2
1
GND
Front View
– Looking into Connector
NOTE:
LIN Port Connector
– Molex 39-29-1048
Mates with; Housing
– Molex 39-01-2040, Pin – Molex 39-00-0036
CAN Port
One, TJA1040T, High-Speed CAN physical-layer transceiver (PHY) is applied to support CAN
bus communications. A 4-pos, 4.22mm MOLEX connector interfaces to external CAN cabling.
Differential input CAN signals, are terminated with 120 ohms. Option headers, JP13 and JP15
allow the user to optionally disconnect signal termination. Avalanche diodes protect the CAN
PHY from voltage surges on the input differential signal lines. Figure 10 below shows the CAN
connector pin-out.
Figure 10: CAN_PORT
NC
GND
CANL
CANH
4
3
2
1
Front View
–
Looking into
Connector
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