SN65HVD230
SN65HVD231
SN65HVD232
SLOS346G – MARCH 2001 – REVISED JUNE 2002
APPLICATION INFORMATION
Implementation
ISO 11898 Specification
TMS320Lx2403/6/7
3.3-V
DSP
Application Specific Layer
Logic Link Control
Medium Access Control
Physical Signaling
Data-Link
Layer
Embedded
CAN
Controller
Physical
Layer
Physical Medium Attachment
SN65HVD230
CAN Bus-Line
Medium Dependent Interface
Figure 27. The Layered ISO 11898 Standard Architecture
The SN65HVD230 family of CAN transceivers are compatible with the ISO 11898 standard; this ensures
interoperability with other standard-compliant products.
application of the SN65HVD230
Figure 28 illustrates a typical application of the SN65HVD230 family. The output of a DSP’s CAN controller is
connected to the serial driver input, pin D, and receiver serial output, pin R, of the transceiver. The transceiver
is then attached to the differential bus lines at pins CANH and CANL. Typically, the bus is a twisted pair of wires
with a characteristic impedance of 120 Ω, in the standard half-duplex multipoint topology of Figure 29. Each end
of the bus is terminated with 120-Ω resistors in compliance with the standard to minimize signal reflections on
the bus.
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