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SN65HVD257 CAN EVM
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Table 1. SN65HVD257 CAN EVM Connections
Connection Type Description
Connection for access to all critical digital IO, supply and GND for driving the the CAN
JMP1 12 pin header
transceivers externally with test equipment or interfaced to a processor EVM
JMP2 3 pin jumper S Mode Pin Control for transceiver 1
Connection for access to all critical digital IO of the single transceiver 1 (bus) when EVM is used
JMP3 5 pin header
for 2 separate buses
Connect 120 Ω CAN termination to the bus. Used separately for a single termination if EVM is at
end of the CAN bus and termination isn’t in the cable. Used in combination with JMP6 to get to
JMP4 2 pin jumper
second CAN termination to represent the combined 60 Ω load for CAN transceiver parametric
measurement.
JMP5 4 pin header Connection for access to transceiver 1 CAN bus output: CANH1, CANL1, GND, GND
Connect 120 Ω CAN termination to the bus. Used in combination with JMP4 to get to second
JMP6 2 pin jumper CAN termination to represent the combined 60 Ω load for CAN transceiver parametric
measurement.
Connection for access to all critical digital IO of the single transceiver 2 (bus) when EVM is used
JMP7 5 pin header
for 2 separate buses
JMP8 3 pin jumper S Mode Pin Control for transceiver 2
Connect 120 Ω CAN termination to the bus. Used separately for a single termination if EVM is at
end of the CAN bus and termination is not in the cable. Used in combination with JMP6 to get to
JMP9 2 pin jumper
second CAN termination to represent the combined 60 Ω load for CAN transceiver parametric
measurement.
JMP10 4 pin header Connection for access to transceiver 2 CAN bus output: CANH2, CANL2, GND, GND.
Connect 120 Ω CAN termination to the bus. Used in combination with JMP4 to get to second
JMP11 2 pin jumper CAN termination to represent the combined 60 Ω load for CAN transceiver parametric
measurement.
JMP12 2 pin jumper Next to JMP5 to allow jumping CAN bus 1 to CAN bus 2
JMP13 2 pin jumper Next to JMP10 to allow jumping CAN bus 1 to CAN bus 2
2 pin terminal
TB1 V
CC
supply and GND connection for the EVM
block
TP1 Test Point GND test point
TP2 Test Point GND test point
TP3 Test Point GND test point
TP4 Test Point CANH (bus 1) test point
TP5 Test Point TXD, transceiver 1, test point
TP6 Test Point S, transceiver 1, test point
TP7 Test Point CANH (bus 1) via 330 Ω serial resistor test point
TP8 Test Point RXD, transceiver 1, test point
TP9 Test Point CANL (bus 1) test point
TP10 Test Point FAULT (transceiver 1) test point
TP7 Test Point CANL (bus 1) via 330 Ω serial resistor test point
TP12 Test Point Vcc test point
TP13 Test Point GND test point
TP14 Test Point GND test point
TP15 Test Point GND test point
TP16 Test Point GND test point
TP17 Test Point CANH (bus 2) test point
TP18 Test Point TXD, transceiver 2, test point
TP19 Test Point S, transceiver 2, test point
TP20 Test Point CANH (bus 2) via 330 Ω serial resistor test point
TP21 Test Point RXD, transceiver 2, test point
TP22 Test Point CANL (bus 2) test point
TP23 Test Point FAULT (transceiver 2) test point
TP24 Test Point CANL (bus 2) via 330 Ω serial resistor test point
6 SN65HVD257 CAN EVM: Functional Safety and Redundant CAN Network SLLU172 – August 2012
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