AS3688 datasheet(31/72 Pages) AMSOSRAM

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AS3688

austriami crosyst ems

Datasheet, Confidential

www.austriamicrosystems.com (ptr,tje)

Revision 1.1.1 / 20060707

29 - 70

Curr3 control1

Addr: 12h

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

Bit

Bit Name

Default

Access Description

txmask_on

R/W

Enables the txmask operation

0b = disabled

1b = During Strobe current is reduced to Preview levels if GPIO1 =1

curr3x_ext_ovtemp

R/W

Selects overtemperature switch off of flash LED

0b = normal operation of CURR3x

1b = if the voltage on GPIO2 drops below 1.25V, CURR3x is

switched from strobe to preview current levels

(can be used to monitor the temperature of the flash led)

curr3x_strobe_high

R/W

Doubles curr3x current during strobe

0b = normal operation of CURR3x (0..153 mA)

1b = Doubles current during strobe (0..300mA)

txmask_invert

R/W

Inverts the GPIO1 input for txmask function

0b = GPIO1 not inverted

1b = GPIO1 inverted

Curr3 strobe control

Addr: 11h

This register select 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 = GPI active high

11b = GPI active low

3:2

strobe_mode

00b

R/W

Selects strobe mode

00b = Mode 1 (Tstrobe=Ts; strobe trigger signal >= 10µs)

01b = Mode 2 (Tstrobe=max Ts)

10b = Mode 3 (Tstrobe = strobe signal)

11b = not used

7:4

strobe_timing

0000b

R/W

Selects strobe time (Ts)

0000b = 100 msec

0001b = 200 msec

0010b = 300 msec

0011b = 400 msec

0100b = 500 msec

0101b = 600 msec

0110b = 700 msec

0111b = 800 msec

1000b = 900 msec

1001b = 1000 msec

1010b = 1100 msec

1011b = 1200 msec

1100b = 1300 msec

1101b = 1400 msec

1110b = 1500 msec

1111b = 1600 msec

AS3688 数据表(PDF) 31 Page - ams-OSRAM AG

AS3688 数据表(HTML) 31 Page - ams-OSRAM AG

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