AS3543 datasheet(71/92 Pages) AMSCO

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AS3543 3v2

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

Table 67. CHGVBUS2 Register

Name

Base

Default

CHGVBUS2

2-wire serial

00h

Offset: 19h-2

Charger / VBUS 2 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 AVDD27-POR.

Bit

Bit Name

Default

Access

Bit Description

7:6

VBUS_COMP_TH

<1:0>

R/W

Sets the threshold for the VBUS comparator. The output can

be read in register 25h.

00: 4.5V

01: 3.18V

10: 1.5V

11: 0.6V

5:3

000

n/a

BAT_TEMP

R/W

Selects the battery temperature supervision level

0: 0.4/0.5V equal to 55/50°C with 100k NTC

1: 0.6/0.7V equal to 45/42°C with 100k NTC

1:0

CHG_EOC_TH<1:0>

R/W

Setes the threshold for the charger EOC (end of charge)

interrupt as a ratio of the constant current (CC) setting.

00: 10% CC

01: 30% CC

10: 50% CC

11: 70% CC

Table 68. Out_Cntr1 Register

Name

Base

Default

Out_Cntr1

2-wire serial

00h

Offset: 1Ah-1

PWGD and XRES Output Control Register

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

This register is reset at a AVDD27-POR.

Bit

Bit Name

Default

Access

Bit Description

7:6

DRIVE_PWGD<1:0>

R/W

Sets the PWGD output pin to open-drain, push-pull or tri-state

and sets various driving strengths

00: 6mA open-drain output

01: 6mA push-pull output

10: 1mA push-pull output

11: HiZ, stri-state

5:4

MUX_PWGD<1:0>

R/W

Multiplexes various digital signals to the PWGD output pin

00: PWGD, PowerGood control signal

01: CLK24M, 24MHz oszillator output

10: CLKINT2, internal clock signal, see Clk_Cntr regsiter

11: PWM, PMW_Cntr register

AS3543 Datasheet(PDF) 71 Page - ams AG

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