UCS1003-3 datasheet(70/138 Pages) MICROCHIP

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UCS1003-1/2/3

DS20005346B-page 70

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bit 1

CDP:

CDP Charger Emulation Profile Status bit

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 completed

= No CDP handshake

bit 0

PT:

Data Pass-Through/SDP Active Mode Status bit(2)

Indicates that the UCS1003-1 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.

= UCS1003-1 is in the Data Pass-Through or BC1.2 SDP Active mode.

= UCS1003-1 is not in the Data Pass-Through or BC1.2 SDP Active mode.

PROFILE STATUS 1 REGISTER (ADDRESS 12h) (CONTINUED)

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 UCS1003-1 is configured as a data pass-through and a removal event and then an Attach event

occurs without changing the Active mode, the PT bit will not be set again, even though the UCS1003-1 is still

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

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