MC9S08DZ16 FREESCALE [Freescale Semiconductor, Inc], MC9S08DZ16 Datasheet - Page 224

• Manufacturer Part Number: MC9S08DZ16
• Description: 8-Bit HCS08 Central Processor Unit (CPU)
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Chapter 12 Freescale’s Controller Area Network (S08MSCANV1)
224
RXFRM
CSWAI
SYNCH
WUPE
RXACT
Field
TIME
7
6
5
4
3
2
4
3
1
Received Frame Flag — This bit is read and clear only. It is set when a receiver has received a valid message
correctly, independently of the filter configuration. After it is set, it remains set until cleared by software or reset.
Clearing is done by writing a 1. Writing a 0 is ignored. This bit is not valid in loopback mode.
0 No valid message was received since last clearing this flag
1 A valid message was received since last clearing of this flag
Receiver Active Status — This read-only flag indicates the MSCAN is receiving a message. The flag is
controlled by the receiver front end. This bit is not valid in loopback mode.
0 MSCAN is transmitting or idle
1 MSCAN is receiving a message (including when arbitration is lost)
CAN Stops in Wait Mode — Enabling this bit allows for lower power consumption in wait mode by disabling all
the clocks at the CPU bus interface to the MSCAN module.
0 The module is not affected during wait mode
1 The module ceases to be clocked during wait mode
Synchronized Status — This read-only flag indicates whether the MSCAN is synchronized to the CAN bus and
able to participate in the communication process. It is set and cleared by the MSCAN.
0 MSCAN is not synchronized to the CAN bus
1 MSCAN is synchronized to the CAN bus
Timer Enable — This bit activates an internal 16-bit wide free running timer which is clocked by the bit clock rate.
If the timer is enabled, a 16-bit time stamp will be assigned to each transmitted/received message within the
active TX/RX buffer. As soon as a message is acknowledged on the CAN bus, the time stamp will be written to
the highest bytes (0x000E, 0x000F) in the appropriate buffer (see
Message
mode.
0 Disable internal MSCAN timer
1 Enable internal MSCAN timer
Wake-Up Enable — This configuration bit allows the MSCAN to restart from sleep mode when traffic on CAN is
detected (see
the selected function to take effect.
0 Wake-up disabled — The MSCAN ignores traffic on CAN
1 Wake-up enabled — The MSCAN is able to restart
Storage”). The internal timer is reset (all bits set to 0) when disabled. This bit is held low in initialization
Section 12.5.5.4, “MSCAN Sleep
Table 12-1. CANCTL0 Register Field Descriptions
MC9S08DZ60 Series Data Sheet, Rev. 4
2
Mode”). This bit must be configured before sleep mode entry for
Description
Section 12.4, “Programmer’s Model of
2
Freescale Semiconductor