NXP Semiconductors UG10068 User manual

UG10068
PN7220 - Quick start guide
Rev. 1.0 — 11 July 2023 User guide
Document information
Information Content
Keywords PN7220, Android, NFC Forum, EMVCo
Abstract This document describes the PN7220BP1 and how to use it.

NXP Semiconductors UG10068
PN7220 - Quick start guide
Revision history
Rev Date Description
v.1.0 20230711 Initial version
Revision history
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NXP Semiconductors UG10068
PN7220 - Quick start guide
1 Introduction
This document describes, how to work with PN7220. It leads to find relevant information about HW, antenna
and SW integration, as well as information related to PN7220 evaluation kit for reference implementation.
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PN7220 - Quick start guide
2 General description of PN7220
PN7220 is a complete NFC controller solution, with integrated FW and NCI interface, designed for contactless
communication at 13.56 MHz.
It is the ideal solution for quickly integrating NFC technology into any application, especially for applications
using Android OS.
PN7220 technical details are located in Data Sheet([8]).
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NXP Semiconductors UG10068
PN7220 - Quick start guide
3 PN7220 Integration steps
3.1 HW description
PN7220 (Figure 1) is close controller and needs DH to control it. At the moment the official DH supported by
PN7220 is Qualcom's DragonBoard 845c (Figure 2), but integration is possible with any other DH.
Figure 1. PN7220 Front
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NXP Semiconductors UG10068
PN7220 - Quick start guide
Figure 2. DragonBoard 845c Front
The PN7220 is designed to be easily connected to the Dragonboard. Pin header J43 (red square in Figure 2) is
one to one compatible with the Dragonboard LS1(red square in Figure 3).
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PN7220 - Quick start guide
Figure 3. PN7220 Back
On Figure 4, we can see how the boards look, when they are stacked on top of each other.
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NXP Semiconductors UG10068
PN7220 - Quick start guide
Figure 4. PN7220 on top of Dragonboard 845c
Note: For a proper operation it is required to supply the PNEV7220BP1 via the USB-C connector by 5V/1.5A.
The connected cable is required to provide a ferrite choke.
3.1.1 Dragonboard 845c
To power the board use DC_IN_12V (green square in Figure 2). The Dragonboard must be connected to
computer via the USB-C connector (blue square in Figure 2).
There are 6 switches on the back of the Dragonboard. The default values from 1-6 are ("OFF", "OFF", "OFF",
"OFF", "OFF", "ON").
3.1.2 PN7220
The PN7220 can be powered either via USB-C (red square in Figure 5) or directly from the Dragonboard.
To switch between power supply options, check J5 on the PN7220:
1. When 1-2 connected (external power supply - via USB-C)
2. When 3-4 connected (power supply via Dragonboard)
Refer to Table 1 and/or Figure 5 for the default settings of the PN7220.
Name Default setting
VBAT (J4) CONNECTED
VUP (J1) NOT CONNECTED
VBATPWR (J2) CONNECTED
AUX2AUX1 (J65) NOT CONNECTED
SW_ON (J47) NOT CONNECTED
VBAT_SEL (J3) NOT CONNECTED
EXT_PWR_SEL (J5) 1-2 CONNECTED
Table 1. PN7220 default jumper settings
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PN7220 - Quick start guide
Figure 5. PN7220 default jumper settings
To switch between 1.8 V and 3.3 V for VDDIO_SEL (green square in Figure 5), change the solder jumper to 1-3
(for 3.3 V) or 1-2 (for 1.8 V).
For more details, check Data sheet ([8]).
3.2 Software description
PN7220 supports NCI 2.2 interface, which is perfect for use with Android OS.
NXP provides patches on top of AOSP code. If we want to build AOSP with patches provided by NXP, check [9].
In this quick start guide, we focus on preparing the Windows and Linux environment, using it together with
prebuild Android images, and starting work with PN7220.
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PN7220 - Quick start guide
4 Environment setup
This section, describes how to prepare the environment on Windows or Linux. This is necessary to flash
Android OS to the Dragonboard and to start work with the PN7220.
4.1 Windows environment setup
To enable ADB ([1]) on a Windows computer, we need to install a few things.
For ADB and Fastboot, we need to install the SDK Platform Tools. Follow the next steps:
1. Download platform-tools from [2]
Figure 6. Platform-Tools webpage
2. Accept the terms and conditions and click Download button
Figure 7. Accept&Download
3. After downloading, extract folder and add "adb.exe" and "fastboot.exe" to path
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