ISD9130CFI datasheet(35/415 Pages) NUVOTON

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ISD9160 Technical Reference Manual

Release Date: Mar 30, 2016

- 35 -

Revision V1.41

Wakeup Pin Control Register (SYS_WKCTL)

The WAKEUP pin of the ISD9160 is a special purpose pin that can be used to wake the device from a

deep power down condition when all other pins of the device are inactive. When the device is active,

this register can be used to set the state of the WAKEUP pin. The default state of the pin is as a tri-

state input.

Offset

R/W

Description

Reset Value

SYS_WKCTL

SYS_BA+0x54 R/W

WAKEUP pin control register

0x0000_0006

Reserved

WKDIN

WKPUEN

WKOENB

WKDOUT

Table 5-9 Wakeup Pin Control Register (SYS_WKCTL, address 0x5000_0054) Bit Description.

Bits

Description

[3]

WKDOUT

Wakeup Output State

0 = drive Low if the corresponding output mode bit is set (default)

1 = drive High if the corresponding output mode bit is set

[2]

WKOENB

Wakeup Pin Output Enable Bar

0 = drive WKDOUT to pin

1 = tristate (default)

[1]

WKPUEN

Wakeup Pin Pull-up Control

This signal is latched in deep power down and preserved.

0 = pull-up enable

1 = tristate (default)

[0]

WKDIN

State Of Wakeup Pin

Read only.

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