MC9S12G FREESCALE [Freescale Semiconductor, Inc], MC9S12G Datasheet - Page 532

• Manufacturer Part Number: MC9S12G
• Description: Ignores external trigger. Performs one conversion sequence and stops.
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Freescale’s Scalable Controller Area Network (S12MSCANV3)
16.4.7.3
A message is successfully received and shifted into the foreground buffer (RxFG) of the receiver FIFO.
This interrupt is generated immediately after receiving the EOF symbol. The RXF flag is set. If there are
multiple messages in the receiver FIFO, the RXF flag is set as soon as the next message is shifted to the
foreground buffer.
16.4.7.4
A wake-up interrupt is generated if activity on the CAN bus occurs during MSCAN sleep or power-down
mode.
16.4.7.5
An error interrupt is generated if an overrun of the receiver FIFO, error, warning, or bus-off condition
occurrs.
16.4.7.6
Interrupts are directly associated with one or more status flags in either the
(CANRFLG)
one of the corresponding flags is set. The flags in CANRFLG and CANTFLG must be reset within the
interrupt handler to handshake the interrupt. The flags are reset by writing a 1 to the corresponding bit
position. A flag cannot be cleared if the respective condition prevails.
532
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This document is valid for the S12G96 and the S12G128 device. All information related to other devices is preliminary.
Overrun — An overrun condition of the receiver FIFO as described in
Structures,” occurred.
CAN Status Change — The actual value of the transmit and receive error counters control the
CAN bus state of the MSCAN. As soon as the error counters skip into a critical range
(Tx/Rx-warning, Tx/Rx-error, bus-off) the MSCAN flags an error condition. The status change,
which caused the error condition, is indicated by the TSTAT and RSTAT flags (see
Section 16.3.2.5, “MSCAN Receiver Flag Register
Receiver Interrupt Enable Register
MSCAN Receiver Flag Register (CANRFLG)
Receive Interrupt
Wake-Up Interrupt
Error Interrupt
Interrupt Acknowledge
or the
This interrupt can only occur if the MSCAN was in sleep mode (SLPRQ = 1
and SLPAK = 1) before entering power down mode, the wake-up option is
enabled (WUPE = 1), and the wake-up interrupt is enabled (WUPIE = 1).
It must be guaranteed that the CPU clears only the bit causing the current
interrupt. For this reason, bit manipulation instructions (BSET) must not be
used to clear interrupt flags. These instructions may cause accidental
clearing of interrupt flags which are set after entering the current interrupt
service routine.
MSCAN Transmitter Flag Register
MC9S12G Family Reference Manual,
(CANRIER)”).
NOTE
NOTE
indicates one of the following conditions:
(CANTFLG). Interrupts are pending as long as
(CANRFLG)” and
Rev.1.01
MSCAN Receiver Flag Register
Section 16.3.2.6, “MSCAN
Section 16.4.2.3, “Receive
Freescale Semiconductor