UCS1002-3 datasheet(52/114 Pages) MICROCHIP

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UCS1002-3

DS20006852A-page 52

 2023 Microchip Technology Inc. and its subsidiaries

bit 0

OVER_LIM: Indicates that the IBUS current has exceeded both the ILIM threshold and the IBUS_R2MIN

threshold settings. This bit is cleared when read if the error condition is removed or if the ERR bit is cleared.

This bit causes the ALERT# pin to be asserted and the device to enter the Error state.

1 = IBUS > ILIM and IBUS_R2MIN

0 = IBUS did not exceed both ILIM threshold and the IBUS_R2MIN threshold settings

Note 1: If the Auto-Recovery Fault Handling is not used, the ERR bit must be written to a logic '0' to be cleared. It

is also cleared when the PWR_EN control is disabled.

2: Note that the ERR bit does not necessarily reflect the ALERT# pin status. The ALERT# pin may be

cleared or asserted without the ERR bit changing states.

GENERAL STATUS REGISTER (ADDRESS 11h)

R-0

U-x

R-0

R-C

RATION

—

CC_MODE

TREG

LOW_CUR

REM

ATT

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

C = Clear on Read

bit 7

RATION: Indicates that the UCS1002-3 has delivered the programmed amount of power to a portable

device. If the RATION_BEH bits are set to interrupt the host, this bit causes the ALERT# pin to be

asserted. This bit is cleared when read. This bit is also automatically cleared when the RTN_RST bit is

set or the RTN_EN bit is cleared (see Section 10.4.1 “General Configuration Register”).

1 = UCS1002-3 delivered the programmed amount of power to a portable device

0 = UCS1002-3 did not deliver the programmed amount of power to a portable device

bit 6-5

Unimplemented

bit 4

CC_MODE: Indicates that the IBUS current has exceeded ILIM. Current is in Region 2 (IBUS_R2MIN).

1 = IBUS > ILIM

0 = IBUS < ILIM

bit 3

TREG: Indicates that the internal temperature has exceeded TREG and that the current limit is reduced.

This bit is cleared when read and does not cause the ALERT# pin to be asserted, unless the

ALERT_LINK bit is set.

1 = Internal temperature > TREG

0 = Internal temperature < TREG

bit 2

LOW_CUR: Indicates that a portable device has reduced its charge current to below ~6.4 mA and may

be finished charging. This bit is cleared when read and does not cause the ALERT# pin to be asserted,

unless the ALERT_LINK bit is set.

1 = IBUS < 6.4 mA

0 = IBUS > 6.4 mA

bit 1

REM: Indicates that a Removal Detection event has occurred and there is no longer a portable device

present. This bit is cleared when read and does not cause the ALERT# pin to be asserted. It causes the

A_DET# pin to be released.

1 = Removal Detected

0 = No Removal Detected

bit 0

ATT: Indicates that an Attach Detection event has occurred and there is a new portable device present.

This bit is cleared when read and does not cause the ALERT# pin to be asserted. It causes the A_DET#

pin to be asserted.

1 = Attach Detected

0 = No Attach Detected

INTERRUPT STATUS REGISTER (ADDRESS 10h) (CONTINUED)

UCS1002-3 Datasheet(PDF) 52 Page - Microchip Technology

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