NFCForum NCI 1.0控制器接口规范

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NFCControllerInterface (NCI) Specification 是由 NFC ForumTM（近距离无线通信论坛）制定的一项技术规范，具体版本为 NCI 1.0，即 NFCForum-TS-NCI-1.0，发布日期为 2012 年 11 月 6 日。该规范详细定义了 NFC 控制器接口的标准，旨在促进 NFC 技术在移动设备、读写器和其他智能设备之间的高效交互。 NFC (Near Field Communication) 是一种短距离无线通信技术，常用于电子支付、数据交换以及设备配对。NCI 规范的主要目的是为了确保不同厂商生产的设备能够通过统一的接口标准进行兼容性操作，从而简化开发流程并提高互操作性。它覆盖了接口设计、功能要求、数据传输协议以及安全措施等方面。 RESTRICTIONS ON USE 部分强调了版权和许可使用条件。任何想要使用此规范的人都必须遵守 NFC Forum, Inc.（NFC Forum）与接收者（许可证持有者）之间签订的许可协议。非许可证持有者仅限于阅读此规格，未经授权不得实施或以其他方式使用。若想获得实施权限和完整规格副本，用户需访问 NFC Forum 的官方网站（http://www.nfc-forum.org/specs/spec_license），并在满足许可条款后下载。在下载规格的日期起，许可证条款规定了以下几点： 1. 授权授予：NFC Forum 免费授予许可证持有者内部使用（除特定商业目的外）的权利，但必须遵守协议中的条款。 2. 非实施条款：许可证持有者在没有获得进一步授权的情况下，不能利用此规格进行产品开发或公开实施。 NFCControllerInterface (NCI) Specification 是一个关键的IT行业规范，它对于构建具有互操作性的NFC系统至关重要，确保了设备间的数据传输和功能协调。理解并遵循这些规定是所有参与NFC技术开发和应用的开发者必须关注的事项。

Introduction

NFC Controller Interface (NCI) Specification Page 15

Dynamic Logical Connection

A Logical Connection that is created and closed dynamically as needed.

HCI Network

A Network as described within [ETSI_102622] consisting of a host controller and one or

more hosts.

ISO-DEP Protocol

Half-duplex block transmission protocol defined in [ISO/IEC_14443].

Listen Mode

The mode of an NFC Forum Device where it does not generate a carrier. In this mode,

the NFC Forum Device listens for the RF field of another device.

Logical Connection

A communication channel between the Device Host (DH) and the NFC Controller

(NFCC) that is used for data communication towards either the NFCC itself, an NFCEE,

or a Remote NFC Endpoint.

Message

A generic term for a Command, Response, Notification, or Data object communicated

between the DH and NFCC.

NCI

The logical interface between a Device Host (DH) and an NFC Controller (NFCC).

NCI Core

Defines the basic NCI functionality required between the Device Host (DH) and NFC

Controller (NFCC).

NCI Transport

The physical connection (e.g., SPI, I2C, UART, USB, etc.) and any associated link level

protocol between the DH and NFCC. Each supported NCI Transport has a Transport

Mapping which defines the characteristics of the NCI Transport. An NCI Transport

provides the ability to reliably transfer data without intimate knowledge of the data being

transferred. The NCI specification defines multiple Transport Mappings.

NFC Controller (NFCC)

The logical entity responsible for the transmission of data over the NFC Radio Interface.

The NFC Controller has a connection to the Device Host (DH) and may have connections

to additional NFC Execution Environments (NFCEEs). Those connections are out of

scope of this specification, but the impacts to the NCI are in scope.

NFC Execution Environment (NFCEE)

An environment, either built into the NFCC or connected to the NFCC, where NFC

applications are executed. The NFCEE may be included in entities with various form

factors, some of which can be removable or replaceable.

NFC Radio Interface

A contactless radio interface using NFC technology to communicate with a Remote NFC

Endpoint.

SE也算是一種NFCEE

Introduction

NFC Controller Interface (NCI) Specification Page 18

1.11 Coding Conventions

The following coding conventions apply in this document if not stated otherwise.

• Each octet is represented by bits b0 to b7, where b7 is the most significant bit (msb) and b0

the least significant bit (lsb). In all representations, the leftmost bit is the msb.

• All values greater than 1 octet are sent and received in Little Endian format.

• In representations of octet arrays, each octet is numbered, starting at 0. Octet numbered 0 is

sent over the NCI Transport first.

This document uses the following notations for numbers:

• Values expressed in hexadecimal form are preceded by ‘0x’.

• Values expressed in binary form are followed by a lower case ‘b’.

In this document, the following rules apply for fields or values defined as Reserved for Future

Use (RFU):

• For an NCI message including fields with a subset of octets or bits defined as RFU, the

sender SHALL set these octets or bits to the value indicated in this document or to zero if no

value is given.

• For an NCI message including fields with a subset of octets or bits defined as RFU, the

receiver SHALL disregard these octets or bits and SHALL keep the same interpretation of

any other field of the whole message, unless explicitly stated otherwise.

For fields that could contain values that are defined as RFU, the sender of an NCI message

SHALL NOT set these fields to the RFU values.

If a parameter is defined as meaningless in certain conditions, the message sender SHALL

include the parameter, but MAY set its value to any value. The message receiver SHALL ignore

the parameter value.

Values defined as Proprietary MAY be used by implementations for extensions that are out of

scope of this specification.

In this document, Control Messages are defined by using tables specifying the message

parameters. Control Messages SHALL be coded in the order and length as specified by the

corresponding definition table (first parameter being defined in the topmost table row).

The names of Parameters that can be present multiple times in a Control Message are followed by

square brackets surrounding the number of times the parameter is to be included. This

information is expressed by an index range (e.g., [1..10]). The upper bound of this range can be a

variable defined by another parameter. The parameter instances SHALL follow each other

sequentially. The corresponding parameter length indicates the length of a single parameter

instance (not the length of the complete parameter set).

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