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Starter Kit User’s Manual M3A-2152
REJ10B0224-0300/Rev.3.00 Jan. 2007 Page 56 of 82
Table 2.13 CAN Connector Pin Assignments
Connector Name Pin No Signal Name Description
1 CANH1 High-level CAN0 input/output port
2 CANL1 Low-level CAN0 input/output port
3 CANH2 High-level CAN1 input/output port
4 CANL2 Low-level CAN1 input/output port
5 GND Ground
6 — Free pin
7 GND Ground
CN4
8 — Free pin
(1) How to connect the CAN connector
The jumpers J13 and J14 allow selecting the destinations to which the CAN communication pins
(CTX, CRX) are connected.
Table 2.14 Jumper Usage Conditions (J13 and J14)
Name Default Condition Description
{
Shorted
between 1–2
Connects P221 to the extension connector (CON1)
J13
Shorted
between 2–3
Uses the CRX0 function
{
Shorted
between 1–2
Connects P77 to the extension connector (CON1)
J14
Shorted
between 2–3
Uses the CRX1 function
(2) How to select the terminating resistor connection
The jumpers J5 and J7 allow the terminating resistors to be used in the CAN transmission path
Table 2.15 Selecting the Terminating Resistor Connection (J5 and J7)
Name Default Condition Description
{
Shorted
between 1–2
Uses the CAN0 terminating resistor mounted on-board
J5
Open
between 1–2
Does not use the CAN0 terminating resistor mounted on-board
{
Shorted
between 1–2
Uses the CAN1 terminating resistor mounted on-board
J7
Open
between 1–2
Does not use the CAN1 terminating resistor mounted on-board
Note: The jumpers J5 and J7 are shorted by soldering.