mc9s12q128 Freescale Semiconductor, Inc, mc9s12q128 Datasheet - Page 289

• Manufacturer Part Number: mc9s12q128
• Description: Hcs12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

10.1.4
The following modes of operation are specific to the MSCAN. See
for details.
10.2
The MSCAN uses two external pins:
10.2.1
RXCAN is the MSCAN receiver input pin.
10.2.2
TXCAN is the MSCAN transmitter output pin. The TXCAN output pin represents the logic level on the
CAN bus:
10.2.3
A typical CAN system with MSCAN is shown in
to the CAN bus lines through a transceiver device. The transceiver is capable of driving the large current
needed for the CAN bus and has current protection against defective CAN or defective stations.
Freescale Semiconductor
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•
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Listen-Only Mode
MSCAN Sleep Mode
MSCAN Initialization Mode
MSCAN Power Down Mode
External Signal Description
0 = Dominant state
1 = Recessive state
Modes of Operation
RXCAN — CAN Receiver Input Pin
TXCAN — CAN Transmitter Output Pin
CAN System
TXCAN
CAN_H
CAN node 1
CAN Controller
Transceiver
(MSCAN)
MCU
CAN_L
RXCAN
Figure 10-2. CAN System
MC9S12Q128
CAN Bus
Chapter 10 Freescale’s Scalable Controller Area Network (S12MSCANV2)
Rev 1.09
Figure
CAN node 2
10-2. Each CAN station is connected physically
Section 10.4, “Functional
CAN node n
Description,”
289