AN2283 Freescale Semiconductor / Motorola, AN2283 Datasheet - Page 4

• Manufacturer Part Number: AN2283
• Description: Scalable Controller Area Network (MSCAN)
• Manufacturer: Freescale Semiconductor / Motorola

AN2283/D
Transmit Structure Overview
4
Motorola Scalable Controller Area Network (MSCAN) Interrupts
This subsection discusses the transmit structure on the MSCAN08 and
MSCAN12. The MSCAN has three transmit buffers so that multiple messages
can be set up for transmission onto the CAN bus. When more than one transmit
message buffer is filled with a message, the local priority values in the
corresponding Transmit Buffer Priority Register (TBPR) are compared to
determine which message is to be transmitted onto the bus first.
Each transmit buffer consists of a 14-byte data structure:
See
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Freescale Semiconductor, Inc.
Table
For More Information On This Product,
Four Identifier Registers
Eight Data Segment Registers
One Data Length Register
One Transmit Buffer Priority Register
2.
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Transmit Buffer Priority Register
Table 2. Data Structure
Data Segment Register 0
Data Segment Register 1
Data Segment Register 2
Data Segment Register 3
Data Segment Register 4
Data Segment Register 5
Data Segment Register 6
Data Segment Register 7
Data Length Register
Identifier Register 0
Identifier Register 1
Identifier Register 2
Identifier Register 3
Register Name
MOTOROLA