Rainbow-electronics W90P710CDG Manual do Utilizador descarregar pdf (Página 422)

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W90P710CD/W90P710CDG

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BITS DESCRIPTION

[3]

EnINT4

Enable INT4

Setting this bit 1 to enable extend interrupt 4

1 = Enable interrupt 4

0 = Disable interrupt 4

The AIC interrupt channel 31 is reserved for interrupt 5 and 4 (wire-OR), if

this bit is set and interrupt 4 occur, then it will send an interrupt request

signal into AIC module.

[2]

DBE4

Debounce circuit enable for INT4

(alternative function of GPIO0 pin)

1 = Enable debounce

0 = Disable debounce

Extend interrupt 4 shares the same debounce circuit with nIRQ[3:0],

software can configure debounce sampling time in GPIO_DEBNCE control

[1:0]

ISTYPE4

Interrupt 4 source type

ISTYPE5 Interrupt Source Type

2’b00 LOW level sensitive

2’b01 HIGH level sensitive

2’b10 Negative edge triggered

2’b11 Positive edge triggered

GPIO Interrupt Status Register (GPIO_XISTATUS)

GPIO_XISTATUS 0xFFF8_3078 R/W Extend interrupt status (flag)

0xXXXX_XX00

31 30 29 28 27 26 25 24

RESERVED

23 22 21 20 19 18 17 16

RESERVED

15 14 13 12 11 10 9 8

RESERVED

7 6 5 4 3 2 1 0

RESERVED INT5 INT4

1 2 ... 417 418 419 420 421 422 423 424 425 426 427 ... 551 552

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