UCS2112 datasheet(39/64 Pages) MICROCHIP

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 2015 Microchip Technology Inc.

DS20005424B-page 39

UCS2112

9.2

Status Registers

The Status registers store bits that indicate error

conditions as well as Attach Detection and Removal

Detection.

VBUS PORT STATUS REGISTER (ADDRESS 02H)

R-0

U-0

R-0

ALERT2_PIN

ALERT1_PIN CC_MODE2

CC_MODE1

—

ADET2_PIN

ADET1_PIN

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

ALERT2_PIN:

Reflects the status of the ALERT#2 pin. This bit is set and cleared as the ALERT#2 pin

changes states.

= ALERT#2 Pin asserted (logic low)

= ALERT#2 Pin not asserted

bit 6

ALERT1_PIN:

Reflects the status of the ALERT#1 pin. This bit is set and cleared as the ALERT#1 pin

changes states.

= ALERT#1 Pin asserted (logic low)

= ALERT#1 Pin not asserted

bit 5

CC_MODE2:

Port2 Constant Current Mode State

= Port 2 in Constant Current mode

= Port 2 operating normally

bit 4

CC_MODE1:

Port1 Constant Current Mode State

= Port 1 in Constant Current mode

= Port 1 operating normally

bit 3-2

Unimplemented

bit 1

ADET2:_PIN

Reflects the status of the A_DET#2 pin. When set, indicates that the A_DET#2 pin is

asserted low. This bit is set and cleared as the A_DET#2 pin changes states.

= A_DET#2 pin is asserted (logic low)

= A_DET#2 pin is not asserted

bit 0

ADET1_PIN:

Reflects the status of the A_DET#1 pin. When set, indicates that the A_DET#1 pin is

asserted low. This bit is set and cleared as the A_DET#1 pin changes states.

= A_DET#1 pin is asserted (logic low)

= A_DET#1 pin is not asserted

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