Software Description
2016 Microchip Technology Inc.
DS50002510A-page 31
4.3.1.1
DEDICATED CHARGER EMULATION (DCE) CYCLE
As shipped, the UCS1003-1 is ready to function as a dedicated charger, which will be
applied when there is an attach detection. To view this behavior, perform the following:
1. Connect V
S
to the evaluation board (see
Section 2.4 “Jumpers on the
Evaluation Board”
). The VS_LOW indicator at the bottom of the Main Tab must
be dark. If the color is red, the voltage is not high enough to charge a portable
device.
2. Connect a portable device to the board. Use the OEM USB charging cable that
comes with the portable device.
3. The UCS1003-1 should detect an attachment, switch to the Active Power state,
apply an emulation profile and deliver a charge.
Figure 4-7
shows the interface
after charging has started.
FIGURE 4-7:
Main Tab - Charging Started.
4. Disconnect the portable device from the board.
The UCS1003-1 should detect a removal, switch to the Detect power state, and stop
delivering a charge.
Figure 4-8
shows the interface after a removal was detected.
Charger
emulation
profile
indicator
Power state
indicator
VS_LOW
indicator
A_DET# pin
status is asserted
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