Microchip Technology EVB-UTC2000-UFP, Руководство пользователя

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UTC2000
EVALUATION KIT

2015 Microchip Technology Inc. DS50002399B-page 15
Chapter 2. Getting Started
2.1 CONTENTS OF THE KIT
The UTC2000 Evaluation kit includes the basic equipment necessary for evaluation.
The items included in the kit are:
1. EVB-UTC2000-DFP Evaluation Board
2. EVB-UTC2000-UFP Evaluation Board
3. USB Type-C Cable
2.2 BRING-UP AND TESTING
2.2.1 Setup and Requirements
• EVB-UTC2000-DFP: Before use, slide SW1 to the legacy charging mode. To use,
simply insert the device into any USB Type-A USB 2.0 or USB 3.1 host port. Any
USB Type-C device may now be connected to the USB Type-C port. The revers-
ibility of the USB Type-C cable can be demonstrated by connecting it in the oppo-
site direction.
• EVB-UTC2000-UFP: To use, connect to any USB Type-C host or hub port. If
there is no native USB Type-C host available, the EVB-UTC2000-DFP board may
be used. Insert a USB 2.0 or USB 3.1 device into the Type-A receptacle (J2) of the
EVB-UTC2000-UFP. The device may then be used normally.
2.2.2 EVB-UTC2000-DFP Legacy Charging Operation
The EVB-UTC2000-DFP board is configured to Legacy 500mA (USB2.0)/900mA
(USB3.1 Gen1) charging mode by default. Ensure that SW1 is in the “Lgcy” position.
The switch will select 56 k
Ω CC1/CC2 Rp pull-up resistors and set the CFG_SEL volt-
age to the appropriate level.
When connecting the EVB-UTC2000-DFP board to the EVB-UTC2000-UFP while in
Legacy charging mode, the “Legacy” charging capability LED indicator (D4) on the
EVB-UTC2000-UFP will be illuminated.
2.2.3 1.5A Charging Operation
The EVB-UTC2000-DFP is designed to plug in and operate from any legacy USB
Type-A port. To protect your computer from possible overcurrent issues, 1.5A and 3.0A
modes have been disabled by default.
To test 1.5A charging mode, perform the following steps:
1. Remove R15 and R17 56k Rp pull-up resistors.
2. Populate R18 and R23 with 22k, 0402 footprint resistors.
3. Set SW1 to the “1.5A” position.
4. Remove R3 to isolate the 5V domain on the EVB-UTC200-DFP from the 5V
domain on your host PC.
5. Connect an external power supply as shown in Section 3.1.1 “Power Source” .