UCS1003-2 datasheet(107/138 Pages) MICROCHIP

107 / 138 page

 2014-2015 Microchip Technology Inc.

DS20005346B-page 107

UCS1003-1/2/3

U-0

R/W-0

R-0

R/W-1

—

CS_TO_DIS

CS_EM_TO<1:0>

CS_FRST

RESERVED

CSEM_DIS

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 7-6

Unimplemented:

Read as ‘0’

bit 5

CS_TO_DIS:

Emulation Time-out Timer Disable bit

Disables the emulation time-out timer when the custom charger emulation profile is applied during the

DCE Cycle. If the EM_TO_DIS is set, this bit will have no effect.(1)

= The emulation time-out timer is disabled when the custom charger emulation profile is applied during

the DCE Cycle. When the custom charger emulation profile is being applied, the UCS1003-1 will be

constantly monitoring the IBUS current. When the IBUS current is greater than IBUS_CHG, regardless

of the reason, then the custom charger emulation profile will be accepted. If the portable device does

not draw more than IBUS_CHG current, then the UCS1003-1 will continue waiting until this bit is

cleared.

= The emulation time-out timer is enabled when the custom charger emulation profile is applied during

the DCE Cycle and the EM_TO_DIS bit is not set

bit 4-3

CS_EM_TO<1:0>:

tEM_TIMEOUT Value During Custom Charger Emulation Value bits

These bits are used when the custom charger emulation profile is used during the DCE Cycle.

= 0.8s

= 1.6s

= 6.4s

= 12.8s

bit 2

CS_FRST:

Custom Charger Emulation Profile Disable bit

= The custom charger emulation profile is the first of the profiles applied during the DCE Cycle

= The custom charger emulation profile is the last of the profiles applied during the DCE Cycle

bit 1

Reserved:

Do not change. This bit will read ‘0’ and should not be written to a logic ‘1’.

bit 0

CSEM_DIS:

Custom Charger Emulation Profile Placement in DCE Cycle bit

= The custom charger emulation profile is not enabled

= The custom charger emulation profile is enabled

Note 1:

If the CS_TO_DIS bit is set and the custom charger emulation profile was accepted during the DCE Cycle,

a removal is not detected. To avoid this issue, re-enable the emulation time-out after applying any test

profiles and charging with the ‘final’ profile.

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