mc9s08dz32 Freescale Semiconductor, Inc, mc9s08dz32 Datasheet - Page 222

• Manufacturer Part Number: mc9s08dz32
• Description: Hcs08 Microcontrollers 8-bit Can Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 12 Freescale’s Controller Area Network (S08MSCANV1)
12.1.3
12.2
The MSCAN uses two external pins:
12.2.1
RXCAN is the MSCAN receiver input pin.
12.2.2
TXCAN is the MSCAN transmitter output pin. The TXCAN output pin represents the logic level on the
CAN bus:
12.2.3
A typical CAN system with MSCAN is shown in
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 nodes.
222
Wake-Up Interrupt Req.
Transmit Interrupt Req.
Receive Interrupt Req.
Errors Interrupt Req.
Oscillator Clock
External Signal Description
0 = Dominant state
1 = Recessive state
Block Diagram
RXCAN — CAN Receiver Input Pin
TXCAN — CAN Transmitter Output Pin
CAN System
Bus Clock
MSCAN
Figure 12-2. MSCAN Block Diagram
MUX
MC9S08DZ60 Series Data Sheet, Rev. 3
Configuration
CANCLK
Registers
Control
Status
and
Figure
Presc.
12-3. Each CAN node is connected physically to
Tq Clk
Wake-Up
Low Pass Filter
Message
Buffering
Receive/
Transmit
Filtering
Engine
and
Freescale Semiconductor
RXCAN
TXCAN