EP80579 Datasheet, PDF (1573/1916 Pages) Intel Corporation – Intel® EP80579 Integrated Processor Product Line

Intel^® EP80579 Integrated Processor
• Control Field, consisting of:
— Data Length Code, which is 4 bits wide
— 2 reserved bits for future expansion
• Data Field, consisting of the data to be transmitted. The Data Field can be from 0 to
8 bytes. (MSB transferred first).
• CRC Field, consisting of:
— CRC Sequence, which is the remainder of a polynomial division. This is a 15 bit
value.
— CRC delimiter which is one recessive bit.
• ACK Field, containing:
— a one bit ACK SLOT
A transmitting node drives this bit with a recessive value. All receiving nodes
with comparable CRC values acknowledge with a dominant bit.
— a one bit ACK Delimiter
This will always be a recessive bit.
• End of Frame, which consists of seven recessive bits.
Between any frame the CAN bus must stay “idle” for at least three bit
times(intermission). If no nodes wish to send a frame, the bus stays “idle”.
The Extended CAN Data Frame is illustrated in Figure 39-3.
August 2009
Order Number: 320066-003US
Intel^® EP80579 Integrated Processor Product Line Datasheet
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