WM8321 datasheet(172/253 Pages) WOLFSON

172 / 253 page

WM8321

Production Data

PD, February 2012, Rev 4.0

172

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

8 = DC-DC1 DVS Done

9 = DC-DC2 DVS Done

10 = External Power Enable1

11 = External Power Enable2

12 = System Supply Good (SYSOK)

13 = Converter Power Good (PWR_GOOD)

14 = External Power Clock (2MHz)

15 = Auxiliary Reset

GPIO3 Control

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R16443

(403Bh)

GPIO4

Control

GP4_DIR

GPIO4 pin direction

0 = Output

1 = Input

14:13

GP4_PULL

[1:0]

GPIO4 Pull-Up / Pull-Down configuration

00 = No pull resistor

01 = Pull-down enabled

10 = Pull-up enabled

11 = Reserved

GP4_INT_MOD

GPIO4 Interrupt Mode

0 = GPIO interrupt is rising edge triggered (if

GP4_POL=1) or falling edge triggered (if GP4_POL=0)

1 = GPIO interrupt is triggered on rising and falling

edges

GP4_PWR_DO

GPIO4 Power Domain select

0 = DBVDD

1 = PVDD

GP4_POL

GPIO4 Polarity select

0 = Inverted (active low)

1 = Non-Inverted (active high)

GP4_OD

GPIO4 Output pin configuration

0 = CMOS

1 = Open Drain

GP4_ENA

GPIO4 Enable control

0 = GPIO pin is tri-stated

1 = Normal operation

3:0

GP4_FN [3:0]

0000

GPIO4 Pin Function

Input functions:

0 = GPIO input (long de-bounce)

1 = GPIO input

2 = Power On/Off request

3 = Sleep/Wake request

4 = Sleep/Wake request (long de-bounce)

5 = Sleep request

6 = Power On request

7 = Watchdog Reset input

8 = DVS1 input

9 = DVS2 input

10 = HW Enable1 input

11 = HW Enable2 input

12 = HW Control1 input

WM8321 датащи(PDF) 172 Page - Wolfson Microelectronics plc

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