UCS1003-3 datasheet(97/138 Pages) MICROCHIP

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DS20005346B-page 97

UCS1003-1/2/3

(ADDRESS 35h)

U-0

R-U

R-0

—

S2_TD_TYPE

S2_TD<2:0>

STIM2<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:

Read as ‘0’

bit 6

S2_TD_TYPE:

Stimulus 2 Timer Behavior Determination bit

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

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

has been removed)

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

bit 5-3

S2_TD<2:0>:

Stimulus 2 tSTIM_DEL Determination Value bits

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

STIM2<2:0>:

Stimulus 2 Determination Usage bits

Determines the Stimulus 2 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 is ready to be applied before port power switch is closed; next stimulus will not wait

for this to be removed

001

= DPOUT voltage is greater than the threshold (S2_TH)

010

= Window comparator; DPOUT voltage is lower than the threshold (S2_TH) and DPOUT voltage is

greater than the fixed threshold

011

=DMOUT voltage is greater than the threshold (S2_TH)

100

= Do not use

101

= Do not use

110

=DPOUT voltage is greater than the threshold (S2_TH)

111

= Voltage is present after the port power switch is closed; next stimulus will not wait for this to be

removed

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