Datasheet


SGLS356 − MAY 2006
17
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APPLICATION INFORMATION
TMS320Lx2403/6/7
3.3-V
DSP
Implementation
ISO 11898 Specification
Application Specific Layer
Data-Link
Layer
Logic Link Control
Medium Access Control
Physical
Layer
Physical Signaling
Physical Medium Attachment
Medium Dependant Interface
Embedded
CAN
Controller
SN65HVD230
CAN Bus−Line
Figure 26. The Layered ISO 11898 Standard Architecture
The SN65HVD230M family of CAN transceivers are compatible with the ISO 11898 standard; this ensures
interoperability with other standard-compliant products.
application of the SN65HVD230M
Figure 27 illustrates a typical application of the SN65HVD230M 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 28. Each end
of the bus is terminated with 120-Ω resistors in compliance with the standard to minimize signal reflections on
the bus.