AS3675 datasheet(29/81 Pages) AMSCO

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AS3675

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

Current Sinks CURR3x Registers

Table 30. Curr3 control2

Addr: 12h

Curr3 control2

This register selects the modes of the current sinks30..33 current.

Bit

Bit Name

Default Access

Description

preview_off_after strobe

R/W

Select the switch off mode after strobe pulse

normal preview/strobe mode

switch off preview after strobe duration has

expired. To reinitiate the torch mode the

preview_ctrl has to be set off and on again

2:1

preview_ctrl

00b

R/W

Preview is triggered by

00b

off

01b

software trigger (setting this bit automatically

triggers preview)

10b

CURR2 active high; set gpi_curr2_en=1

11b

CURR2 active low; set gpi_curr2_en=1

curr3x_strobe_high

R/W

Double current on CURR30...CURR33

during strobe function

normal strobe current (0-37.8mA)

double strobe current (0-75.6mA)

strobe_pin

0R/W

Select strobe input pin and current sink outputs (only if

strobe_ctrl=10 or 11)

CURR1 is strobe input; CURR30...CURR33

flash output; set gpi_curr1_en=1

CURR30 is strobe input; CURR1, CURR2,

CURR6 flash output; set gpi_curr30_en=1

Table 31. Curr3 strobe control

Addr: 11h

Curr3 strobe control

This register selects the modes of the current sinks30..33 current.

Bit

Bit Name

Default Access

Description

1:0

strobe_ctrl

00b

R/W

Strobe is triggered by

00b

off

01b

software trigger (setting this bit automatically

triggers strobe)

10b

CURR1 (or CURR30 see strobe_pin)

active high

11b

CURR1 (or CURR30 see strobe_pin)

active low

3:2

strobe_mode

00b

R/W

Selects strobe mode

00b

Mode1 (Tstrobe=Ts; strobe trigger signal

≥

10µs)

01b

Mode 2 (Tstrobe=max Ts)

10b

Mode 3 (Tstrobe = strobe signal)

11b

not used

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