UCS1002-3 datasheet(79/114 Pages) MICROCHIP

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DS20006852A-page 79

UCS1002-3

(ADDRESS 39h)(Note 1)

U-x

R-0

—

S3_TD_TYPE

S3_TD[2:0]

STIM3[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

Unimplemented

bit 6

S3_TD_TYPE: Determines the behavior of the stimulus timer.

1 = The stimulus timer controls how long the response is applied after the stimulus is detected. The

response is immediately applied and held for the duration of the timer, and then removed if the

stimulus is removed.

0 = The stimulus timer is a delay from when the stimulus is detected until the response is performed.

bit 5-3

S3_TD[2:0]: Determines the Stimulus 3 tSTIM_DEL value as shown below.

000 =0 ms

001 =1 ms

010 =5 ms

011 =10 ms

100 =20 ms

101 =40 ms

110 =80 ms

111 = 100 ms

bit 2-0

STIM3[2:0]: Determines the Stimulus 3 that is used as shown below. Note that the lower threshold for

the window comparator option is fixed at 400 mV and only applies to the DPOUT pin. This setting cannot

be used for the DMOUT port.

000 = VBUS voltage ready to be applied before port power switch is closed. Next stimulus does not wait

for this to be removed.

001 = DPOUT voltage is greater than the threshold (S3_TH).

010 = Window comparator. DPOUT voltage is less than the threshold (S3_TH) and DPOUT voltage

greater than the fixed threshold.

011 =DMOUT voltage is greater than the threshold (S3_TH).

100 = Do not use.

101 = Do not use.

110 = DPOUT voltage is greater than the threshold (S3_TH).

111 = Voltage is present after the port power switch is closed. Next stimulus does not wait for this to

be removed.

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 are not updated and must be ignored. These

settings are only used by the Legacy charger emulation profiles.

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