h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 582
h8s-2646
Manufacturer Part Number
h8s-2646
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2646.pdf
(1165 pages)
- Current page: 582 of 1165
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Section 15 Controller Area Network (HCAN)
Bits 7 to 5, 3, and 2—Reserved: These bits always read 0. The write value should always be 0.
Bit 4—Bus Operation Interrupt Flag: Status flag indicating detection of a dominant bit due to
bus operation when the HCAN module is in HCAN sleep mode.
Bit 1—Unread Interrupt Flag: Status flag indicating that a receive message has been overwritten
while still unread.
Bit 0—Mailbox Empty Interrupt Flag: Status flag indicating that the next transmit message can
be stored in the mailbox.
Rev. 5.00 Sep 22, 2005 page 556 of 1136
REJ09B0257-0500
Bit 4
IRR12
0
1
Bit 1
IRR9
0
1
Bit 0
IRR8
0
1
Description
CAN bus idle state
[Clearing condition]
Writing 1
CAN bus operation in HCAN sleep mode
[Setting condition]
Bus operation (dominant bit detection) in HCAN sleep mode
Description
[Clearing condition]
Clearing of all bits in UMSR (unread message status register)
Unread message overwrite
[Setting condition]
When UMSR (unread message status register) is set
Description
[Clearing condition]
Writing 1
Transmit message has been transmitted or aborted, and new message can be stored
[Setting condition]
When TXPR (transmit wait register) is cleared by completion of transmission or
completion of transmission abort
(Initial value)
(Initial value)
(Initial value)
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