UCS2112 datasheet(37/64 Pages) MICROCHIP

37 / 64 page

 2015 Microchip Technology Inc.

DS20005424B-page 37

UCS2112

9.0

The registers shown in Table 9-1 are accessible

through the SMBus or I2C. An entry of ‘—’ indicates

that the bit is not used. Writing to these bits will have no

effect and reading these bits will return ‘0’. Writing to a

reserved bit may cause unexpected results and read-

ing from a reserved bit will return either ‘1’ or ‘0’ as indi-

cated in the bit description. While in the Sleep state, the

UCS2112 will retain configuration and charge rationing

data as indicated in the text. If a register does not indi-

cate that data will be retained in the Sleep power state,

this information will be lost when the UCS2112 enters

the Sleep power state.

TABLE 9-1:

Address

R/W

Function

Default

Value

Page

No.

00h

Port 1 Current Measurement

Stores the current measurement for port 1

00h

01h

Port 2 Current Measurement

Stores the current measurement for port 2

00h

02h

Load Share VBUS Port Sta-

tus

Indicates Load ShareVBUS Port and general

status

00h

03h

Interrupt Status1

See Text

Indicates why ALERT# pin asserted for port 1

00h

04h

Interrupt Status2

See Text

Indicates why ALERT# pin asserted for port 2

00h

0Fh

General Status1

R/R-C

Indicates General Status for port 1

00h

10h

General Status2

R/R-C

Indicates General Status for port 2

00h

11h

General Configuration1

R/W

Controls basic functionality for port 1

06h

12h

General Configuration2

R/W

Controls basic functionality for port 2

02h

13h

General Configuration3

R/W

Controls other functionality

60h

14h

Current Limit

R/W

Controls/Displays MAX Current Limit per port

00h

15h

Auto-recovery Configuration

R/W

Controls the Auto-recovery functionality

2Ah

16h

Port 1 Total Accumulated

Charge High Byte