Texas Instruments SPRU938B Interrupt Priority Vector Status/Clear Register Intpri, Nointpend

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VLYNQ Port Registers

3.4Interrupt Priority Vector Status/Clear Register (INTPRI)

The interrupt priority vector status/clear register (INTPRI) displays the highest priority vector with a pending interrupt when read. When writing, only bits [4:0] are valid, and the value represents the vector of the interrupt to be cleared. The INTPRI is shown in Figure 12 and described in Table 9.

Figure 12. Interrupt Priority Vector Status/Clear Register (INTPRI)

31	30			16
NOINTPEND		Reserved
R-1h		R-0
15		5	4	0
	Reserved			INSTAT
	R-0			R/W-0

LEGEND: R/W = Read/Write; R = Read only; -n= value after reset

Table 9. Interrupt Priority Vector Status/Clear Register (INTPRI) Field Descriptions

Bit	Field	Value	Description
31	NOINTPEND		Interrupt pending status.
		0	Indicates there is a pending interrupt.
		1	Indicates that there are no pending interrupts from the interrupt status/clear register.
30-5	Reserved	0	Reserved. Always read as 0. Writes have no effect.
4-0	INSTAT	0-1Fh	When read, this field displays the vector that is mapped to the highest priority interrupt bit that is
			pending from the interrupt status/clear register (INSTATCLR), with bit 0 as the highest priority, and
			bit 31 as the lowest. Writing the vector value back to this field clears the interrupt.

3.5Interrupt Status/Clear Register (INTSTATCLR)

The interrupt status/clear register (INTSTATCLR) indicates the unmasked interrupt status. The INTSTATCLR is shown in Figure 13 and described in Table 10.

Figure 13. Interrupt Status/Clear Register (INTSTATCLR)

31 0

INTCLR

R/W-0

LEGEND: R/W = Read/Write; -n= value after reset

Table 10. Interrupt Status/Clear Register (INTSTATCLR) Field Descriptions

Bit	Field	Value	Description
31-0	INTCLR	0-FFFF FFFFh	This field indicates the unmasked status of each interrupt. Writing a 1 to any set bit in this field
			clears the corresponding interrupt. If there is a bit set in this register and if the INTLOCAL bit in
			the control register (CTRL) is also set, the VLYNQ interrupt (VLQINT) is asserted.

30 VLYNQ Port SPRU938B –September 2007

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