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Section 20 Controller Area Network
Page 1044 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
(3) Reference Trigger Offset Register (RFTROFF)
This is a 8-bit read/write register that affects Tx-Trigger Time (TTT) of Mailbox-30. The TTT of
Mailbox-30 is compared with CYCTR after RFTROFF extended with sign is added to the TTT.
However, the value of TTT is not modified. The offset value doesn't affect others except Mailbox-
30.
RFTROFF (Address = H'086)
1514131211109876543210
0000000000000000
R/W R/W R/W R/W R/W R/W R/W R/W RRRRRRRR
RFTROFF[7:0]
Bit:
Initial value:
R/W:
--------
Bit 15 to 8 — Indicate the value of Reference Trigger Offset.
Bits 7 to 0: Reserved. The written value should always be '0' and the returned value is '0'.
Bit15 Bit14 Bit13 Bit12 Bit11 Bit10 Bit9 Bit8 Description
0 0 0 0 0 0 0 0 Ref_trigger_offset = 0
(initial value)
0 0 0 0 0 0 0 1 Ref_trigger_offset = 1
0 0 0 0 0 0 1 0 Ref_trigger_offset = 2
. . . . . . . .
0 1 1 1 1 1 1 1 Ref_trigger_offset = 127
. . . . . . . .
1
1
.
1
1
.
1
1
.
1
1
.
1
1
.
1
1
.
1
1
.
1
0
.
Ref_trigger_offset = 1
Ref_trigger_offset = 2
1 0 0 0 0 0 0 1 Ref_trigger_offset = 127
1 0 0 0 0 0 0 0 Prohibited