upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 650
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upd70f3422gj-gae-qs-ax
Manufacturer Part Number
upd70f3422gj-gae-qs-ax
Description
32-bit Single-chip Microcontroller
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD70F3422GJ-GAE-QS-AX.pdf
(930 pages)
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Chapter 19
650
R
D
Figure 19-13
Figure 19-14
(Frame)
Note
Note
R
D
(Frame)
<8> Interframe space
The interframe space is inserted after a data frame, remote frame, error frame,
or overload frame to separate one frame from the next.
• The bus state differs depending on the error status.
Interframe space (error active node)
1.
2.
Interframe space (error passive node)
1.
2.
Preliminary User’s Manual U17566EE1V2UM00
Intermission
– Error active node
– Error passive node
(3 bits)
Bus idle: State in which the bus is not used by any node.
D: Dominant = 0
R: Recessive = 1
Bus idle:
Suspend transmission:
D: Dominant = 0
R: Recessive = 1
The interframe space consists of a 3-bit intermission field and a bus idle
field.
The interframe space consists of an intermission field, a suspend
transmission field, and a bus idle field.
Usually, the intermission field is 3 bits. If the transmitting node detects a
dominant level at the third bit of the intermission field, however, it
executes transmission.
Intermission
(3 bits)
Interframe space
Suspend transmission
Interframe space
(8 bits)
State in which the bus is not used by any node.
Sequence of 8 recessive-level bits transmitted
from the node in the error passive status.
(0 to ∞ bits)
Bus idle
(0 to ∞ bits)
Bus idle
(Frame)
CAN Controller (CAN)
(Frame)
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