XC908AS60ACFU Motorola Semiconductor Products, XC908AS60ACFU Datasheet - Page 397

• Manufacturer Part Number: XC908AS60ACFU
• Description: MC68HC908AZ60A, MC68HC908AS60A Hcmos Microcontroller Unit Technical Data
• Manufacturer: Motorola Semiconductor Products

23.9.2 MSCAN08 Soft Reset Mode
23.9.3 MSCAN08 Power Down Mode
MC68HC908AZ60A — Rev 2.0
MOTOROLA
NOTE:
NOTE:
wake-up: copying of RxBG into RxFG, message aborts and message
transmissions. If the MSCAN08 is still in bus-off state after Sleep mode
was left, it continues counting the 128*11 consecutive recessive bits.
In Soft Reset mode, the MSCAN08 is stopped. Registers can still be
accessed. This mode is used to initialize the module configuration, bit
timing and the CAN message filter. See
Register 0
mode.
When setting the SFTRES bit, the MSCAN08 immediately stops all
ongoing transmissions and receptions, potentially causing CAN protocol
violations.
The user is responsible to take care that the MSCAN08 is not active
when Soft Reset mode is entered. The recommended procedure is to
bring the MSCAN08 into Sleep mode before the SFTRES bit is set.
The MSCAN08 is in Power Down mode when the CPU is in Stop mode.
When entering the Power Down mode, the MSCAN08 immediately stops
all ongoing transmissions and receptions, potentially causing CAN
protocol violations.
The user is responsible to take care that the MSCAN08 is not active
when Power Down mode is entered. The recommended procedure is to
bring the MSCAN08 into Sleep mode before the STOP instruction is
executed.
To protect the CAN bus system from fatal consequences of violations to
the above rule, the MSCAN08 drives the TxCAN pin into recessive state.
In Power Down mode, no registers can be accessed.
MSCAN08 bus activity can wake the MCU from CPU Stop/MSCAN08
power-down mode. However, until the oscillator starts up and
MSCAN Controller (MSCAN08)
on page 411 for a complete description of the Soft Reset
MSCAN08 Module Control
MSCAN Controller (MSCAN08)
Low Power Modes
Technical Data
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