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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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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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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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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