upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 697
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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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CAN Controller (CAN)
LOPT7 to LOPT0
After reset: Undefined
0 to 31
CnRGPT
CnLOPT
Note
(16)
Last out-pointer of transmit history list (LOPT)
When the CnLOPT register is read, the contents of the element indexed by the last out-
pointer (LOPT) of the receive history list are read. These contents indicate the number of
the message buffer to which a data frame or a remote frame was transmitted last.
LOPT7
15
0
7
0
7
(b) Write
CnLOPT - CANn module last out-pointer register
The CnLOPT register indicates the number of the message buffer to which a
data frame or a remote frame was transmitted last.
The value read from the CnLOPT register is undefined if a data frame or
remote frame has never been transmitted from a message buffer. If the
CnTGPT.THPM bit is set to 1 after the CAN module has changed from the
initialization mode to an operation mode, therefore, the read value of the
CnLOPT register is undefined.
Preliminary User’s Manual U17566EE1V2UM00
R
ROVF
Clear
0
1
LOPT6
Address: CnLOPT <CnRBaseAddr> + 062
14
0
6
0
6
Setting of ROVF bit
ROVF bit is not changed.
ROVF bit is cleared to 0.
LOPT5
13
0
5
0
5
LOPT4
12
0
4
0
4
LOPT3
11
0
3
0
3
H
LOPT2
10
0
2
0
2
LOPT1
9
0
1
0
1
Chapter 19
LOPT0
ROVF
Clear
8
0
0
0
697
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