UCS2113 datasheet(33/62 Pages) MICROCHIP

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DS20005680B-page 33

UCS2113

8.1

Current Measurement Register

The Current Measurement register stores the

measured current value delivered to the portable

device (IBUS). This value is updated continuously while

the device is in the Active power state.

21h

Port 2 Charge Rationing

Threshold Low Byte

R/W

Sets the maximum allowed charge that will

be delivered to Port 2

FFh

22h

Ration Configuration

R/W

Controls Charge Ration Functionality

11h

23h

Port 1 Current Limit Behavior R/W

Controls the Current Limiting Behavior (CC

Mode Region 2) for Port 1

96h

24h

Port 2 Current Limit Behavior R/W

Controls the Current Limiting Behavior (CC

Mode Region 2) for Port 2

96h

FDh

Product ID

Stores a fixed value that identifies each

product

E1h

FEh

Manufacturer ID

Stores a fixed value that identifies Microchip

5Dh

FFh

Revision

Stores a fixed value that represents the

revision number

81h

TABLE 8-1:

Address

R/W

Function

Default

Value

Page

No.

PORTS 1 AND 2 CURRENT MEASUREMENT REGISTERS

(ADDRESSES 00H, 01H)

R-0

CM(x)<7:0>

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7-0

CM(x)<7:0>: Port X Current Measurement, where x=1 or 2 (address 00h for Port 1 and address 01h for

Port 2).

Note 1: The bit weights are in mA,1 LSB = 13.3 mA (maximum value is 255 LSB corresponding to 3.4A).

2: This data will be cleared when the device enters the Sleep state. This data will also be cleared whenever

the port power switch is turned off (or any time that VBUS is discharged).

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