A.3. Daisy-chain signals

You use daisy-chain signals when two or more VICs are daisy-chained. See Daisy-chained interrupt controller. Table A.3 lists the daisy-chain signals.

Table A.3. Daisy-chain signals

Name

Type

Source/

destination

Description

VICVECTADDRIN [31:0]

Input

External interrupt

controller

Connects to the VICVECTADDROUT[31:0] signal of the previous VIC if you use daisy-chaining. Connects to logic 0 if the VIC is not daisy-chained.

VICVECTADDROUT [31:0]

Output

Interrupt controller

Connects to the VICVECTADDRIN[31:0] signal of the next VIC if you use daisy-chaining. Left unconnected if the VIC is not daisy-chained.

nVICIRQIN

Input

External interrupt

controller

Connects to the nVICIRQ signal of the previous VIC if you use daisy-chaining. Connects to logic 1 if the VIC is the last in the daisy-chain, or if VIC is not daisy-chained.

nVICFIQIN

Input

External interrupt

controller

Connects to the nVICFIQ signal of the previous VIC if you use daisy-chaining. Connects to logic 1 if the VIC is the last in the daisy-chain, or if VIC is not daisy-chained.

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