upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 660
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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
660
OPMODE[2:0]
in CnCTRL
register
(read by user)
REC[7:0]
in CnERC
register
OPMODE[2:0]
in CnCTRL
register
(written by user)
TEC[7:0]
in CnERC
register
BOFF bit
in CnINFO
register
Figure 19-17
80H ≤ TEC[7:0] ≤ FFH
»error-passive«
Caution
?
TEC > FFH
≠
≠
00H
?
00H
00H ≤ REC[7:0] ≤ 80H
In the bus-off recovery sequence, the REC0 to REC6 bits counts up (+1) each
time 11 consecutive recessive-level bits have been detected. Even during the
bus-off period, the CAN module can enter the CAN sleep mode or CAN stop
mode. To be released from the bus-off state, the module must enter the
initialization mode once. If the module is in the CAN sleep mode or CAN stop
mode, however, it cannot enter the initialization mode. In this case, release the
module from the CAN sleep or stop mode, and then make a request to place
the module in the initialization mode.
Recovery from bus-off state through normal recovery sequence
Preliminary User’s Manual U17566EE1V2UM00
?
FFH < TEC [7:0]
»bus-off«
<1>
00H
<2>
»bus-off-recovery-sequence«
00H
Undefined
00H
≠
00H
CAN Controller (CAN)
00H ≤ REC[7:0] < 80H
<3>
00H ≤ TEC[7:0] < 80H
»error-active«
?
≠
00H
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