Texas Instruments SN65HVD255D Evaluation Module SN65HVD255DEVM SN65HVD255DEVM Scheda Tecnica
Codici prodotto
SN65HVD255DEVM
Introduction
Table 1.
Connection
Type
Description
Used for mode selection on pin 8 (4.7k
Ω
pull up to V
CC
, 0
Ω
pull down to GND,
JMP1
4 pin jumper
customer installable pull down for devices with slew rate control R
S
pin).
Connection for access to all critical digital I/O, supply and GND for driving the CAN
JMP2
10 pin header
transceiver externally with test equipment or interfaced to a processor EVM
JMP3
4 pin header
CAN bus connection (CANH, CANL) and GND
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
JMP4
2 pin jumper
with JMP5 to get to second CAN termination to represent the combined 60
Ω
load for
CAN transceiver parametric measurement.
Connect 120
Ω
CAN termination to the bus. Used in combination with JMP4 to get to
JMP5
2 pin jumper
second CAN termination to represent the combined 60
Ω
load for CAN transceiver
parametric measurement.
Functional use of pin 5. Options for use are:A) 4.7k
Ω
pull up to V
CC
for transceiver
with digital input on pin 5B) 0
Ω
pull down to GND for transceiver with digital input on
pin 5C) Active split termination: for CAN transceiver with V
REF
or SPLIT pin where
JMP6
5 pin jumper
active split termination is desired. Connect to V
CM
and populate the components
R7/R15 and C4 as required for the system.D) V
RXD
(V
IO
) for CAN transceivers with a
separate V
RXD
(V
IO
) for I/O level shifting.
TB1
2 pin jumper
V
CC
supply and GND connection for the EVM
TP1
TXD, Device Pin 1 test point
TP2
CANH (bus) test point
TP3
Device Pin 8 test point
TP4
CANH via 330
Ω
serial resistor test point
TP5
CANL (bus) test point
TP6
CANL via 330
Ω
serial resistor test point
TP7
Test Point
RXD, Device Pin 4 test point
TP8
Device Pin 5 test point
TP9
V
CC
test point
TP10
TP11
GND test point
TP12
TP13
4
CAN EVM User Guide
SLLU158
–
December 2011
Copyright
©
2011, Texas Instruments Incorporated