r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 776
r5f71374an80fpv
Manufacturer Part Number
r5f71374an80fpv
Description
32-bit Risc Microcomputer Superh?? Risc Engine Family
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R5F71374AN80FPV.pdf
(1154 pages)
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Section 19 Controller Area Network (RCAN-ET)
(4)
The interrupt register (IRR) is a 16-bit read/write-clearable register containing status flags for the
various interrupt sources.
• IRR (Address = H'008)
Initial value:
Bits 15 to 14: Reserved.
Bit 13 - Message Error Interrupt (IRR13): this interrupt indicates that:
• A message error has occurred when in test mode.
• Note: If a Message Overload condition occurs when in Test Mode, then this bit will not be set.
Bit 12 – Bus activity while in sleep mode (IRR12): IRR12 indicates that a CAN bus activity is
present. While the RCAN-ET is in sleep mode and a dominant bit is detected on the CAN bus, this
bit is set. This interrupt is cleared by writing a '1' to this bit position. Writing a '0' has no effect. If
auto wakeup is not used and this interrupt is not requested it needs to be disabled by the related
interrupt mask register. If auto wake up is not used and this interrupt is requested it should be
cleared only after recovering from sleep mode. This is to avoid that a new falling edge of the
reception line causes the interrupt to get set again.
Please note that the setting time of this interrupt is different from the clearing time of GSR4.
Rev. 1.00 Sep. 21, 2007 Page 750 of 1124
REJ09B0402-0100
Bit 13: IRR13
0
1
Bit 12: IRR12
0
1
When not in test mode this interrupt is inactive.
R/W:
Interrupt Request Register (IRR)
Bit:
15
R
0
-
14
R
0
-
IRR13 IRR12
R/W
13
Description
message error has not occurred in test mode (Initial value)
[Clearing condition] Writing 1
[Setting condition] message error has occurred in test mode
Description
bus idle state (Initial value)
[Clearing condition] Writing 1
[Setting condition] dominant bit level detection on the Rx line while in sleep
mode
0
R/W
12
0
11
R
0
-
10
R
0
-
IRR9
R
9
0
IRR8
R
8
0
R/W
IRR7
7
0
IRR6
R/W
6
0
IRR5
R/W
5
0
R/W
IRR4
4
0
IRR3
R/W
3
0
IRR2
R
2
0
IRR1
R
1
0
R/W
IRR0
0
1
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