Rainbow-electronics W90P710CDG Manual de usuario descargar pdf (Pagina 508)

100

101

W90P710CD/W90P710CDG

Publication Release Date: September 19, 2006

- 509 - Revision B2

Key Pad Interface Status Register (KPISTATUS)

KPISTATUS 0xFFF8_800C R/O key pad status register 0x0000_0000

31 30 29 28 27 26 25 24

RESERVED

23 22 21 20 19 18 17 16

RESERVED INT 3 K R S T P D W A K E 3KEY 2KEY 1KEY

15 14 13 12 11 10 9 8

RESERVED KEY1R KEY1C

7 6 5 4 3 2 1 0

RESERVED KEY0R KEY0C

BITS DESCRIPTION

[31:22] RESERVED

[21] INT

Key interrupt

This bit indicates the key scan interrupt is active and that one or two

keys have changed status. The interrupt also occur when the three

specified keys are detected if ENRST bit in KPI3KFCON is cleared.

It will be cleared by hardware automatically when software read

KPISTATUS register.

[20]

3KRST

3-Keys reset flag

This bit is a record flag for software reference, it will be set after 3-

keys reset occur.

1 = 3 keys reset

0 = not reset.

This bit is cleared while it is read.

[19]

PDWAKE

Power Down Wakeup flag

This flag indicates the chip is wakeup from power down by keypad

1 =wakeup up by keypad

0 = not wakeup

[18] 3KEY

Specified three-key is detected.

This flag indicates specified-three-keys was detected. Software can

read this bit to know the keypad interrupt is 3 key or not.

1 2 ... 503 504 505 506 507 508 509 510 511 512 513 ... 551 552

Rainbow-electronics W90P710CDG Manual de usuario Pagina 508

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Rainbow-electronics W90P710CDG Manual de usuario Pagina 508

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