UCS81003 datasheet(87/108 Pages) MICROCHIP

87 / 108 page

 2014 Microchip Technology Inc.

DS20005334A-page 87

UCS81003

bit 3-0

CS_S2_TH<3:0>: Defines the threshold value, as shown below for the specified stimulus. If the stimulus

is VBUS voltage is ready to be applied or applied (i.e., CS_STIM2<2:0> = 000b or 111b), the threshold

value is ignored.

0000

= 400 mV

0001

= 400 mV

0010

= 400 mV

0011

= 300 mV

0100

= 400 mV

0101

= 500 mV

0110

= 600 mV

0111

= 700 mV

1000

= 800 mV

1001

= 900 mV

1010

= 1400 mV

1011

= 1600 mV

1100

= 1800 mV

1101

= 2000 mV

1110

= 2200 mV

1111

= Do not use.

Note 1:

The Legacy charger emulation profiles do not use these settings. Whenever a Legacy charger emulation

profile is applied within the DCE Cycle, these controls will not be updated and should be ignored. These

settings are only used by the BC1.2 CDP and DCP charger emulation profiles.

(ADDRESS 48H)(Note 1)

U-x

R/W-0

—

CS_S2_RATIO<2:0>

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 7-3

Unimplemented

bit 2-0

CS_S2_RATIO<2:0>: Determines the voltage divider ratio, as shown below, when the stimulus

response is set to connect a voltage divider (i.e., CS_S2_R2<3:0> = 0110b, 1001b, or 1100b).

000

= 0.25

001

= 0.33

010

= 0.4

011

= 0.5

100

= 0.54

101

= 0.6

110

= 0.66

111

= Do not use.

Note 1:

The BC1.2 DCP and CDP charger emulation profiles do not use this control. Whenever the BC1.2 CDP or

DCP charger emulation profile is applied, these controls will not be updated and should be ignored. These

settings are only used by the Legacy charger emulation profiles.

(ADDRESS 47H)(Note 1) (CONTINUED)

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