LP3941 Datasheet, PDF(20/34 Page) Texas Instruments – Cellular Phone Power Management Unit

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LP3941 Datasheet, PDF (20/34 Pages) Texas Instruments – Cellular Phone Power Management Unit

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LP3941A Serial Port Communication Address Code 7h'7E

Numbers in parentheses indicate default setting: (0) bit is set to low state, and (1) bit is set to high state. R/O âRead Only, All other

bits are Read and Write.

Addr Register

8hâ²00 Enable

8hâ²01

8hâ²02

8hâ²03

8hâ²04

8hâ²05

LDO9/

LDO1 Data

Code

LDO10/

LDO2 Data

Code

LDO8/

LDO3 Data

Code

LDO11/

LDO4 Data

Code

LDO5

Data Code

8hâ²06 LDO6

Data Code

8hâ²07 LDO7

Data Code

8hâ²08 Charger

8hâ²09 Charger

8hâ²0a Control/

Enable

8hâ²0b

8hâ²0c

8hâ²0d

8hâ²2e

ADC

Control

ADC

Output

Power-On-

Reason

ADC/

Status

TABLE 1. LP3941 Control and Data Codes

LDO7âEN

(0)

LDO9

Code 3

(1)

LDO10

Code 3

(1)

Not Used

(0)

LDO11

Code 3

(0)

Not Used

(0)

Not Used

(0)

Not Used

(0)

Not Used

(0)

Not Used

(0)

LDO9-EN

(0)

Not Used

(0)

ADC7

R/O

LDO6âEN

(0)

LDO9

Code 2

(1)

LDO10

Code 2

(0)

LDO8

Code 2

(1)

LDO11

Code 2

(0)

Not Used

(0)

Not Used

(0)

Not Used

(0)

Not Used

(0)

Not Used

(0)

LDO10-EN

(0)

Not Used

(0)

ADC6

R/O

LDO5âEN

(1)

LDO9

Code 1

(1)

LDO10

Code 1

(1)

LDO8

Code 1

(0)

LDO11

Code 1

(0)

Not Used

(0)

Not Used

(0)

Not Used

(0)

Not Used

(0)

Not Used

(0)

LDO11-EN

(0)

Not Used

(0)

ADC5

R/O

LDO4âEN

(0)

LDO9

Code 0

(1)

LDO10

Code 0

(0)

LDO8

Code 0

(1)

LDO11

Code 0

(0)

Not Used

(0)

Not Used

(0)

Not Used

(0)

4.1V/4.2V

(1)

EOC

R/O

Back-Up

Battery

Charger

Enable

(1)

Not Used

(0)

ADC4

R/O

LDO3âEN

(1)

LDO1

Code 3

(0)

LDO2

Code 3

(1)

Not Used

(0)

LDO4

Code 3

(1)

Not Used

(0)

Not Used

(0)

Not Used

(0)

Charger

Current

Code 3 (0)

Charging

R/O

RTC_LDO

Disable

(0)

ADC Start

(0)

ADC3

R/O

LDO2âEN

(0)

LDO1

Code 2

(0)

LDO2

Code 2

(1)

LDO3

Code 2

(1)

LDO4

Code 2

(1)

LDO5

Code 2

(0)

LDO6

Code 2

(0)

LDO7

Code 2

(1)

Charger

Current

Code 2 (0)

EOC Sel-1

(0)

LED1

Enable

(0)

ADC EN

(0)

ADC2

R/O

LDO1âEN

(1)

LDO1

Code 1

(1)

LDO2

Code 1

(0)

LDO3

Code 1

(0)

LDO4

Code 1

(1)

LDO5

Code 1

(1)

LDO6

Code 1

(1)

LDO7

Code 1

(0)

Charger

Current

Code 1 (0)

EOC Sel-0

(1)

LED2

Enable

(0)

ADC

Mux-1

(1)

ADC1

R/O

LDO8âEN

(0)

LDO1

Code 0

(1)

LDO2

Code 0

(1)

LDO3

Code 0

(1)

LDO4

Code 0

(1)

LDO5

Code 0

(1)

LDO6

Code 0

(1)

LDO7

Code 0

(1)

Charger

Current

Code 0 (1)

Charger-

DIS

Off/On

(0)

LED3

Enable

(0)

ADC

Mux-0

(1)

ADC0

R/O

(0)

COMP2

COMP1

OUT

R/O

(0)

RTC

Alarm

R/O

Charger

Present

R/O

RTC

ALARM

R/O

HF_PWR

R/O

CHG_IN

R/O

HF_PWR

R/O

ADC

Overflow

R/O

ADC

Data

Ready

R/O

200945 Version 4 Revision 2 Print Date/Time: 2011/10/25 13:09:13

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