AS3649 datasheet(28/39 Pages) AMSCO

28 / 39 page

AS3649

Datasheet - Detailed Descr i p ti on

www.ams.com/AS3649

1.0-2

28 - 39

adc_convert

0R/W

Start ADC conversion

ADC conversion finished

Start ADC conversion - once finished the register bit is

automatically reset and the result is stored in adc_result

dcdc_skip_enable

1R/W

Allow pulseskip operation of DCDC - see Table 4 on page 12

Disabled - force 4MHz (1MHz) operation

Enabled - can use pulseskip

strobe_type

1R/W

Defines if the STROBE input is edge or level sensitive; see also bit

strobe_on (page 28)

STROBE input is edge sensitive

STROBE input is level sensitive

strobe_on

1R/W

Enables the STROBE input

STROBE input disabled

STROBE input enabled

in flash mode

1. Exception depending on freq_switch_on (see page 29) - see Table 4 on page 12

Table 15. Fault Register

Addr: 8

Fault Register

This register identifies all the different fault conditions and provide information about the

LED detection

Bit

Bit Name

Default

Access

Description

status_uvlo

R/sC

an undervoltage event has happened - see Current Reduction by VIN

Measurements in Flash Mode and Diagnostic Pulse on page 15

0No

1Yes

reserved

reserved - don’t use

fault_ntc

R/sC

LED overtemperature detection hit - see NTC - Flash LED

Overtemperature Protection on page 14

0No

1Yes

fault_txmask

R/sC

TXMASK/TORCH event triggered during flash - see TXMASK event

occurred on page 13

0No

1Yes

fault_timeout

R/sC

see Flash Timeout on page 14

0No fault

Flash timeout exceeded

Table 14. Strobe Signalling / ADC Register (Continued)

Addr: 7

Strobe Signalling / ADC Register

This register defines the flash current reducing and mode for STROBE

Bit

Bit Name

Default

Access

Description

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