UCS1002-3 datasheet(83/114 Pages) MICROCHIP

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DS20006852A-page 83

UCS1002-3

U-x

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

bit 5

CS_TO_DIS: Disables the Emulation Timeout timer when the Custom Charger Emulation profile is

applied during the DCE Cycle. If the EM_TO_DIS is set, this bit has no effect (Note 1).

1 = The Emulation Timeout timer is disabled when the Custom charger emulation profile is applied

during the DCE Cycle. When the Custom charger emulation profile is applied, the UCS1002-3

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

of the reason, then the Custom Charger Emulation profile is accepted. If the portable device does

not draw more than IBUS_CHG current, then the UCS1002-3 continues to wait until this bit is cleared.

0 = The Emulation Timeout 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]: Determines the tEM_TIMEOUT value as shown below. This is used when the Custom

charger emulation profile is used during the DCE Cycle.

00 = 0.8s

01 = 1.6s

10 = 6.4s

11 = 12.8s

bit 2

CS_FRST: Disables the Custom charger emulation profile.

1 = The Custom charger emulation profile is the first of the profiles applied during the DCE Cycle.

0 = The Custom charger emulation profile is the last of the profiles applied during the DCE Cycle.

bit 1

RESERVED: Do not change. This bit reads as ‘0’ and must not be written to a logic ‘1’.

bit 0

CSEM_DIS: Determines whether the Custom charger emulation profile is placed first or last in the DCE Cycle.

1 = The Custom charger emulation profile is not enabled.

0 = The Custom charger emulation profile is enabled.

Note 1: If the CS_TO_DIS bit is set and the Custom charger emulation profile is accepted during the DCE cycle, a

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

profiles and charging with the final profile.

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