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I have a question about 16c554 ~

wu jane
Prodigy 20 points
Other Parts Discussed in Thread: TL16C554

Dear SIR:

I use the 16c554 to design my circuit.

I got a question about 16c554 of  Interrupt ( INTA, INTB,INTC,INTD)

Can you make suer about  the 16c554 's hardware be reset, and then what Voltage level is the  INTA~INTD  ?  (HI or LO)

thanks

  • 0
    Guru 316920 points

    The TL16C554 datasheet says:

    INTA, INTB, INTC, INTD: External interrupt output. The INTx outputs go high (when enabled by the interrupt register) and inform the CPU that the ACE has an interrupt to be serviced. […] The interrupt is disabled when it is serviced or as the result of a master reset.