WM8352 datasheet(287/336 Pages) WOLFSON

287 / 336 page

Production Data

WM8352

PD, February 2011, Rev 4.4

287

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R173 (ADh)

CSA Flash

control

CS1_FLASH_MODE

Determines the function of the current sink

0 = LED mode

1 = Flash mode

Reset by state machine.

CS1_TRIGSRC

Selects the trigger for the flash

0 = Flash is triggered by CS1_DRIVE bit

1 = Flash is triggered from GPIO pin configured

as FLASH

This bit has no effect when

CS1_FLASH_MODE=0

Reset by state machine.

CS1_DRIVE

Enables the current sink ISINKA

LED mode-

0 = disable LED

1 = enabled LED

FLASH mode-

CS1_TRIGSRC is set to 0. Flash is started when

the bit goes high, it is then reset at the end of the

flash duration. Duration is determined by

CS1_FLASH_DUR. This bit has no effect if

CS1_TRIGSRC is set to 1.

Reset by state machine. Default held in metal

mask.

CS1_FLASH_RATE

Determines the Flash rate

0 = Normal Operation. Once per trigger (Either

1 = Flash will be internally triggered every 4

seconds

Reset by state machine.

9:8

CS1_FLASH_DUR[1:0]

Sets duration of flash

00 = 32ms

01 = 64ms

10 = 96ms

11 = 1024ms

Reset by state machine.

5:4

CS1_OFF_RAMP[1:0]

Switch-off ramp duration

LED mode-

00 = instant (no ramp)

01 = 0.25s

10 = 0.5s

11 = 1s

Flash mode-

00 = instant (no ramp)

01 = 1.95ms

10 = 3.91ms

11 = 7.8ms

Reset by state machine.

1:0

CS1_ON_RAMP[1:0]

Switch-on ramp duration

WM8352 Datasheet(PDF) 287 Page - Wolfson Microelectronics plc

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