Texas Instruments AM335 Series Technical Reference Manual

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23.4.5 INT Register (offset = 10h) [reset = 0h]
INT is shown in Figure 23-23 and described in Table 23-18.
Figure 23-23. INT Register
31 30 29 28 27 26 25 24
Reserved
R-0h
23 22 21 20 19 18 17 16
Int1ID[23:16]
R-0h
15 14 13 12 11 10 9 8
Int0ID[15:0]
R-0h
7 6 5 4 3 2 1 0
Int0ID[15:0]
R-0h
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit; -n = value after reset
Table 23-18. INT Register Field Descriptions
Bit Field Type Reset Description
31-24 Reserved R 0h
23-16 Int1ID[23:16] R 0h Interrupt 1 Identifier (indicates the message object with the highest
pending interrupt).
If several interrupts are pending, the CAN interrupt register will point
to the pending interrupt with the highest priority.
The DCAN1INT interrupt line remains active until Int1ID reaches
value 0 (the cause of the interrupt is reset) or until IE1 is cleared.
A message interrupt is cleared by clearing the message object's
IntPnd bit.
Among the message interrupts, the message object's interrupt
priority decreases with increasing message number.
0x00 = No interrupt is pending.
0x01 to 0x80 = Number of message object which caused the
interrupt.
0xff = Unused.
15-0 Int0ID[15:0] R 0h Interrupt Identifier (the number here indicates the source of the
interrupt).
If several interrupts are pending, the CAN interrupt register will point
to the pending interrupt with the highest priority.
The DCAN0INT interrupt line remains active until Int0ID reaches
value 0 (the cause of the interrupt is reset) or until IE0 is cleared.
The Status interrupt has the highest priority.
Among the message interrupts, the message object's interrupt
priority decreases with increasing message number.
0x0000 = No interrupt is pending.
0x0001 to 0x0080 = Number of message object which caused the
interrupt.
0x7fff = Unused (values 0081 to 7FFF).
0x8000 = Error and status register value is not 0x07.
0xffff = Unused.
3931
SPRUH73H–October 2011–Revised April 2013 Controller Area Network (CAN)
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Texas Instruments AM335 Series Specifications

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Brand	Texas Instruments
Model	AM335 Series
Category	Computer Hardware
Language	English