WM8352 datasheet(284/336 Pages) WOLFSON

284 / 336 page

WM8352

Production Data

PD, February 2011, Rev 4.4

284

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R169 (A9h)

Battery

Charger

Control 2

CHG_ACTIVE

Charger Status.

0 = Battery Charging is inactive

1 = Battery Charging is active

(Note CHG_ENA is just a request; the WM8352

determines if the conditions are satisfied for

Battery Charging).

Default held in metal mask.

CHG_PAUSE

0 = Don't pause the charger

1 = Pause charging

Reset by state machine.

13:12

CHG_STS[1:0]

00 = Charger off, current set to 0.

01 = In trickle charge mode.

10 = In fast charge mode.

11 = Reserved

11:8

CHG_TIME[3:0]

1011

Writing to his field set the charge timeout

duration:

0000 = 60min

0001 = 90min

0010 = 120min

0011 = 150min

0100 = 180min

0101 = 210min

0110 = 240min

0111 = 270min

1000 = 300min

1001 = 330min

1010 = 360min

1011 = 390min

1100 = 420min

1101 = 450min

1110 = 480min

1111 = 510min

Reading from this field indicates the charge

time remaining:

Time remaining = CHG_TIME * 2048s

Protected by security key. Default held in metal

mask.

CHG_MASK_WALL_FB

Selects whether to ignore the WALL_FB signal

when charging from LINE.

0 = Does not mask the WALL_FB signal

1 = Mask the WALL_FB signal.

Note: Care needs to be taken when using this

bit.

Protected by security key. Reset by state

machine.

CHG_TRICKLE_SEL

Selects the trickle charge current.

0 = Set the trickle charge current to 50mA.

1 = Set the trickle charge current to 100mA.

Protected by security key.

5:4

CHG_VSEL[1:0]

Battery charge voltage:

00 = 4.05V

01 = 4.1V

10 = 4.15V

11 = 4.2V

Protected by security key.

3:0

CHG_ISEL[3:0]

0110

Fast charge current limit setting.

WM8352 Datasheet(PDF) 284 Page - Wolfson Microelectronics plc

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