AS3608 datasheet(51/68 Pages) AMSCO

51 / 68 page

www.austriamicrosystems.com

Revision 1.03

50 - 67

AS3608 2v2

Data Sheet - R e g i s t e r D e f i n i t i o n

3:2

GPIO_DIMM_HBN_SEL

<1:0>

R/W

Selects input for external dimming or hibernation control

00: disable dimming or hibernation via GPIO

01: GPIO1

10: GPIO2

11: GPIO3

1:0

n/a

Table 40. BOOST_Cntr1 Register

Name

Base

Default

BOOST_Cntr1

2-wire serial

00h

Offset: 1Bh-1

DCDC step-up Control Register 1

This is an extended register and needs to be enabled by writing 001b to Reg. 1Ch first.

This register is reset at a VDD27-POR or XRES input.

Bit

Bit Name

Default

Access

Bit Description

SU_ON

R/W

Enables the DCDC step-up regulator

0: SU switched off

1: SU switched on (will be reset if VFB exceeds the maximum and the

current drops to zero)

n/a

SU_SLOWDIM

R/W

Selects the DCDC step-up regulator external dimming mode

0: for dimming frequencies <1kHz

1: for dimming frequencies >1kHz

4:3

SU_EXTDIM<1:0>

R/W

Selects the DCDC step-up external PWM dimming input

00: no ext. dimming

01: CURR1 controlled

10: CURR2 controlled

11: GPIO1/2/3 controlled (selected via GPIO_DIMM_HBN_SEL <1:0>)

SU_OVP_OFF

R/W

Disables the DCDC step-up over-voltage protection

0: SU OVP switched on

1: SU OVP switched off

SU_CURR_FB

R/W

Selects the DCDC step-up feedback mode

0: voltage FB via pin FBSU

1: current feedback via CURR1 or CURR2 (automatic select)

SU_FASTSKIP

R/W

Defines the DCDC step-up regulator output voltage at low loads, when pulse

skipping is active

0: Accurate output voltage, more ripple

1: Elevated output voltage, less ripple

Table 39. Clk_Cntr Register

Name

Base

Default

Clk_Cntr

2-wire serial

00h

Offset: 1Ah-2

Clock Control Register

This is an extended register and needs to be enabled by writing 010b to Reg. 1Ch first.

This register is reset at a VDD27-POR or XRES input.

Bit

Bit Name

Default

Access

Bit Description

AS3608 Arkusz danych(PDF) 51 Page - ams AG

AS3608 Arkusz danych(HTML) 51 Page - ams AG

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68

Arkusz danych Pobierz

Link URL