RT9481 datasheet(37/41 Pages) RICHTEK

37 / 41 page

RT9481

is a registered trademark of Richtek Technology Corporation.

DS9481-00 June 2015

www.richtek.com

Function

Address

b[7]

(MSB)

b[6]

b[5]

b[4]

b[3]

b[2]

b[1]

b[0]

(LSB)

MISC_

STA1

0X25

Meaning

ADC_ STA

ADAPTER_STA

Reversed

Reversed Reversed

Default

Read/

Write

R/W

ADC_STA

ADC status

0 : ADC is idle

1 : ADC conversion is on going

ADAPTER_STA

VBUS adapter type

00 : SDP with D+ / D- floating

01 : SDP

10 : CDP

11 : DCP

Function

Address

b[7]

(MSB)

b[6]

b[5]

b[4]

b[3]

b[2]

b[1]

b[0]

(LSB)

MISC_

STA2

0X26

Meaning

LDSWREG

_STAT

USBOUTLD

_STAT

VBUS_STAT

USBOUT_

STAT

VDDAUVP_

STAT

LDSW_

STAT

Reversed Reversed

Default

Read/

Write

R/W

LDSWREG_STAT

Load switch warning. LDSW output current regulation loop active

0 : LDSW output current regulation loop is not active

1 : LDSW output current regulation loop is active

USBOUTLD_STAT

USBOUT light load indicator

0 : USBOUT loading > USBOUTLC_LVL or disable

1 : USBOUT loading < USBOUTLC_LVL

VBUS_STAT

VBUS connection status

0 : VBUS has no adapter connect (VBUS < VBUS_POR)

1 : VBUS has adapter connect (VBUS > UVLO & VBUS > ISENSN + VSLP)

USBOUT_STAT

USBOUT device connection status

0 : USBOUT has no device connect

1 : USBOUT has device connect

VDDAUVP_STAT

VDDA under voltage protect, disable SWCHG, LDSW, DCP Control, Adapter Detection, ADC and TS driver

when VDDAUVP is occur.

0 : VDDA UVP is not trigger

1 : VDDA UVP is trigger

LDSW_STAT

Load switch status

0 : Load switch is turn off

1 : Load switch is turn on

RT9481 Datasheet(PDF) 37 Page - Richtek Technology Corporation

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