UCS81003 datasheet(52/108 Pages) MICROCHIP

52 / 108 page

UCS81003

DS20005334A-page 52

 2014 Microchip Technology Inc.

10.3.1

PROFILE STATUS 1 REGISTER

These bits are indicators only and will not cause the

ALERT# pin or A_DET# pin to change states. The

CUST, DCP, CDP and PT bits are cleared under the

following circumstances:

• the PWR_EN control is disabled

• a new Active mode is selected

• a Removal Detection event occurs.

PROFILE STATUS 1 REGISTER (ADDRESS 12H)

R-0

U-x

R-0

NO_HS

—

VS_LOW

CUST

DCP

CDP

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

NO_HS: The NO_HS bit is only set during the Dedicated Charger Emulation Cycle (see Section 9.10 “No

Handshake”). This bit is automatically cleared whenever a new charger emulation profile is applied. (Note 1)

No handshake at the end of the DCE Cycle.

A new charger emulation profile has been applied

bit 6-5

Unimplemented

bit 4

VS_LOW: Indicates that the VS voltage is below the VS_UVLO threshold and the port power switch is held

off. This bit is cleared automatically when the VS voltage is above the VS_UVLO threshold.

=VS < VS_UVLO

=VS > VS_UVLO

bit 3

CUST: Indicates that the portable device successfully performed a handshake with the user-defined

Custom Charger Emulation Profile during the DCE Cycle and is charging. Based on the Custom Charger

Emulation Profile configuration, the high-speed switch will be either open or closed (see Section 10.13

“Custom Emulation Configuration Registers”). The port power switch current limiting mode is

determined by the Custom current limiting behavior settings (see Section 10.14.2 “Custom Current

Limiting Behavior Configuration Register”).

Custom Profile handshake complete

No Custom Profile handshake

bit 2

DCP: Indicates that the portable device accepted the BC1.2 DCP charger emulation profile and is

charging. The high-speed switch will be controlled via the HSW_DCE bit (see Section 10.4.5 “High-

Speed Switch Configuration Register”), and the port power switch will use Constant Current Limiting.

DCP handshake complete

No DCP handshake

bit 1

CDP: Indicates that the portable device successfully performed a handshake with the BC1.2 CDP

charger emulation profile and is charging. The high-speed switch will be closed, and the port power

switch will use Trip Current Limiting.

CDP handshake complete

No CDP handshake

bit 0

PT: Indicates that the UCS81003 is in the Data Pass-through or BC1.2 SDP Active mode. The

high-speed switch will be closed, and the port power switch will use Trip Current Limiting. (Note 2)

UCS81003 is in the Data Pass-through or BC1.2 SDP Active mode.

UCS81003 is not in the Data Pass-through or BC1.2 SDP Active mode.

Note 1:

The NO_HS bit does not indicate that a portable device is drawing current and it may be cleared to ‘0’

(indicating a handshake) and a portable device not charge. This bit is set at the end of each charger emu-

lation profile if a portable device does not handshake with it. This bit will not be set at the same time that

any other Profile Status register bits are set.

When the UCS81003 is configured as a Data Pass-through and a Removal event and then an Attach event

occur without changing the Active mode, the PT bit will not be set again even though the UCS81003 is still

operating as a Data Pass-through as configured. Toggling the M1 control will re-enable the PT status bit.

UCS81003 数据表(PDF) 52 Page - Microchip Technology

UCS81003 数据表(HTML) 52 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载