AS3636 datasheet(24/42 Pages) AMSCO

24 / 42 page

www.austriamicrosystems.com

Revision 0.7

24 - 42

with additional features

with photosensor

AS3636

Preliminary Datasheet, Confidential - D e ta i l e d D e s c r i p t i o n

Table 8. Control Register

Addr: 04h

Control Register

Operating mode of AS3636

Bit

Bit Name

Default Access

Description

WATCHDOG

1R/W

Watchdog timer enable

No watchdog timer

After one minute after charging is finished the AS3636

automatically enters standby mode; any read or write

access to any AS3636 register resets this one minute

watchdog timer

AFSTROBE

0R/W

Strobe input usage (level sensitive)

STROBE input is used for Xenon flash

STROBE input is used for AF LED on/off; LED current

is defined by LED Current Register with no PWM

MST

0R/W

Module Self Testing

Read: No module test running

Write: Writing ‘0’ stops a running self test

Writing ‘1’ to this register starts the module self test

procedure; when the test is finished MST is

automatically cleared - see Self Testing on page 17

TORCH_S

TORCH pin status (used for module testing)

0low

1high

5:4

00b

always 0, don’t use

RESET

Reset of all registers

always reads back ‘0’

no action

all registers are reset to their default

STDBY

0R/W

Standby mode

normal operation (all modes are possible)

Writing ‘1’ writes defaults to Xenon Control Register,

LED Control Register and eventually to the Control

clears the bit STDBY

Table 9. Interrupt Mask Register

Addr: 05h

Interrupt Mask Register

Mask Interrupts (interrupt output INT, open drain, active low)

Bit

Bit Name

Default Access

Description

ILFI

1R/W

Indicator LED fault interrupt

0Disabled

Enabled

CTFI

1R/W

Xenon Charger Transformer fault interrupt

0Disabled

Enabled

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