UCS1003-1 Evaluation Board User’s Guide
DS50002510A-page 32
2016 Microchip Technology Inc.
FIGURE 4-8:
Main Tab - Removal Detected.
4.3.1.2
CHARGING DOWNSTREAM PORT (CDP)
The CDP charging profile is based on the “
USB Battery Charging Specification v1.x
”.
When a BC1.x-compliant portable device attachment is detected, the UCS1003-1 and
the portable device do handshaking based on the standard. If handshaking is
successful, charging occurs up to the set current limit.
To select the CDP port power profile, M1, M2 and EM_EN must be all high. This can
be done by removing the jumpers for these pins (from J9 header) or by using the pin
override in the GUI (see
Section 4.2.3.3 “Pin Override”
).
4.3.1.3
PASS-THROUGH
Data Pass-Through does not apply any type of charger emulation. When selected, it
closes the USB high-speed data switch and supplies current up to the current limit.
To select Data Pass-Through, M1, M2 and EM_EN can be set to any one of the two
DATA PASS-THRU combinations (
010
and
110
), as shown in
Figure 4-9
. This can be
done by setting the jumpers for these pins (from J9 header – see
Section 2.4 “Jumpers
on the Evaluation Board”
) or by using the pin override in the GUI (see
Section 4.2.3.3
“Pin Override”
).
FIGURE 4-9:
Data Pass-Through Selection Options.
Power state
indicator changed
Disconnect
point
showing in
plot
A_DET# pin
status is
deasserted
Data
pass-through
options
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