AS3715 datasheet(115/159 Pages) AMSOSRAM

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[v1-03] 2015-Aug-10

AS3715 − Register Description

Figure 127:

curr_control

Figure 128:

pwm_control_l

Addr:40h

curr_control

Bit

Bit Name

Default

Access

Bit Description

7:4

curr3_ctrl

b0000

ON/OFF control of the pad CURR3

0 : Current sink is turned OFF

1 : Current sink is active

2 : Current sink is active and LED string connected to SU2.

Required for automatic feedback selection.

3 : Controlled by internal PWM generator, or external, if

gpioX_iosf=4

4 : XINT output

5 : VSUP_low output

6 : Charger active output

7 : EOC output

8 : Inverted signal of ON pin as output

9 : Signal of ON pin as output

10 : 32 kHz output (derived from oscillator)

11 : PWM output

12 : PWRGOOD output

13-15 : NA

3:2

curr2_ctrl

b00

ON/OFF control of the pad CURR2

0 : Current sink is turned OFF

1 : Current sink is active

2 : Current sink is active and LED string connected to SU2.

Required for automatic feedback selection.

3 : Controlled by internal PWM generator, or external, if

gpioX_iosf=4

1:0

curr1_ctrl

b00

ON/OFF control of the pad CURR1

0 : Current sink is turned OFF

1 : Current sink is active

2 : Current sink is active and LED string connected to SU2.

Required for automatic feedback selection.

3 : Controlled by internal PWM generator, or external, if

gpioX_iosf=4

Addr:41h

pwm_control_l

Bit

Bit Name

Default

Access

Bit Description

7:0

pwm_l_time

b00000000

This bit defines the low time of the PWM generator in 1Mhz

units

0 : pwm_div * 1usec

1 : pwm_div * 2usec

2 : pwm_div * 3usec

... : ...

255 : pwm_div * 256usec

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