Microchip Technology UCS1003-2, User Manual

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UCS1003-2 Evaluation Board User’s Guide
DS50002430A-page 16
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2016 Microchip Technology Inc.
2.1.4 Configuration for BC1.2 Charging Downstream Port
(CDP) Mode
The Charging Downstream Port (CDP) mode configures the UCS1003-2
Evaluation Board to handshake respond, enumerate the USB and charge the
downstream device. To configure the evaluation board for the CDP mode,
follow these steps:
1. Configure the jumper settings as shown in Table 2-3 .
2. Connect a cable from USB port J9 (USB-B) to an upstream PC USB port.
3. Apply 5V. The UCS1003-2 is set to the Active state and awaits a
downstream device to provide handshake stimulus on the DP pin upon
attachment.
TABLE 2-3: UCS1003-2 EVALUATION BOARD JUMPER DESCRIPTION FOR CDP MODE
( 1 )
Jumper
Designator
Jumper
Position
Pin Name Function Description
J7 1-2 V
BUS
Jumper Placed = V
BUS
pins of the UCS connected to the V
BUS
of the
USB connector
J11 1-2 PWR_EN Jumper Open = Logic High: Port power switch enabled
3-4 EM_EN Jumper Open = Logic High
5-6 M1 Jumper Placed = Logic High
7-8 M2 Jumper Placed = Logic High
J12 2-3 SEL Jumper Placed = Logic High: PWR_EN is active-high
J13 15-16 ILIM Jumper Placed on Positions 15-16 and not placed on all the other
pins of the header J13: Current limit selection is set to 2.85A typical
(3A maximum)
J14 1-2 LATCH Jumper Placed = Logic Low: LATCH =
0
, auto-recovery enabled
3-4 S0 Jumper Open = Logic High: S0 =
0
, Active mode
Note 1: The power source selection is not mentioned in this table. The headers that select the power supply
source (J5 and J8) must always have 2 jumpers populated on them in total. For more information, see
Section 3.1.1 “Power Source” .