NXP Semiconductors
UM11055
NXP USB PD shield board user manual
UM11055
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© NXP B.V. 2018. All rights reserved.
User manual
Rev. 1.0 — 9 February 2018
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3 Hardware setup
3.1 Hardware setup for USB-PD
In order to set up the board for USB-PD operation please follow the below jumper
settings on the board.
1. Install shunt at J4
2. Install shunt at J5
3. Install shunt at J11 – Pin 1 to 2
4. Install shunt at J12 – Pin 1 to 2
5. Install shunt at J13 – Pin 1 to 2
6. Install shunt at J14 – Pin 1 to 2
Once shunts are installed the shield board can be plugged to the Kinetis Freedom board.
The signal mapping from the shield board to the Freedom board is provided below. The
boards can mate only in one direction.
Note:
Before power up, please verify the USB Type-C shield is pushed all the way into
the Arduino header with good contact. Make sure there are no unintentional shorts (e.g.
jumper, blue wires) between the USB Type-C Shield board and the main development
board.
1. I2C – SCL to J404 Pin 10
2. SDA to J404 Pin 9
3. ALERT to J404 Pin 1
Once the boards are mated, please use the 9V Power Adaptor provided with the board
to power up the shield board. The PD PHY communicates with the PD controller through
the I
2
C interface. The I
2
C interface has the the SDA, SCL signals along with an alert
signal used by the PD PHY to Interrupt the PD controller. The PD-PHY implements
TCPC 1.1 spec. Please refer to PTN5110 Application programming guide for more
details on the PD-PHY programming. The PD controller KL27 MCU has the Type C Port
Manager (TCPM) FW stack implemented in the SDK. Please refer to the MCUXpresso
USB PD quick start guide for the FW stack info. The shield board with the PD PHY can
be configured for the below Type C roles.
1. DFP
2. DRP with Start as Sink. (Live Battery)
In the DFP role, the TCPC is configured by the TCPM to always source power. There are
two source PDOs available. PDO1 is 5V at 2.7A and PDO2 is 9V at 1.5A. There are two
source paths in the Hardware. Please check the USB PD shield board schematics for
detailed block diagram and schematics. There is a 5V source path and a 9V source path
implemented in the hardware. Based on the PD contract one of this path is enabled when
the Shield board is used as a Power source.
In the DRP configuration the TCPC is configured to start as a sink. So if you connect
a DFP to the Type C port the system will sink power. In Live battery mode, the TCPC
will sink 5V initially and then once PD contract is in place it will sink Higher voltage. The
Voltage can be measured at TP12. The hardware implements a Sink path with capability
to Sink up to 20V. The sink path is enabled by the PD PHY when the shield board is
acting as a Sink.