联发科MT7976芯片手册中文版资源-CSDN文库

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联发科MT7976芯片是专为Wi-Fi应用设计的一款802.11ax无线射频芯片，该芯片手册提供了详细的技术规格和功能介绍，帮助开发者和工程师理解和应用这款芯片。802.11ax是Wi-Fi联盟制定的新一代高速无线网络标准，旨在提高无线网络的效率和容量，特别是在高密度用户环境中。 MT7976CN Datasheet 1.2是该芯片的最新版本，发布于2021年11月15日，由联发科官方提供。文档修订历史显示，自V1.0版本以来，经过了多次更新，包括修复了AVDD33_WF4_PA_A引脚的错误，并对封装选项进行了修改（POD modified）。手册中包含了以下主要内容： 1. **系统概述**：这部分介绍了MT7976芯片的整体架构和工作原理。功能框图展示了芯片的主要组成部分，如射频前端、基带处理、电源管理单元等。它支持最新的802.11ax标准，能够提供高速的无线连接，并具备多用户多输入多输出(MU-MIMO)能力，以提高网络容量和效率。 2. **引脚定义**：详细列出了MT7976芯片的所有引脚布局和功能，包括输入/输出(I/O)定义，这些信息对于正确地在电路板上布局和连接芯片至关重要。 3. **特性**：这部分列出了MT7976芯片的主要特点，可能包括高速数据传输速率、低功耗模式、增强的干扰抑制技术、支持多种无线频段以及兼容性等。 4. **电气特性**：详细描述了芯片的电压、电流、频率等电气参数，这对于确保芯片在各种环境下的稳定工作是必要的。 5. **操作指南**：可能包含如何初始化和配置芯片，以及如何利用其高级功能如OFDMA（正交频分多址）、TWT（目标唤醒时间）等的指导。 6. **接口协议**：详细说明了与其他设备或模块如CPU、内存、传感器等交互的接口协议和通信方式。 7. **安全与可靠性**：涵盖了芯片的安全特性，如温度范围、抗静电保护以及电磁兼容性(EMC)等。 8. **应用示例**：可能会提供一些实际应用场景的设计示例，帮助工程师快速理解如何在具体产品中应用MT7976芯片。 9. **故障排查与故障树分析**：对于可能出现的问题，手册通常会提供诊断流程和解决方案，以帮助工程师快速定位和解决故障。联发科MT7976芯片手册中文版是开发和维护基于802.11ax Wi-Fi的产品时不可或缺的参考资料，它提供了全面的技术细节和指导，有助于确保产品的高效、稳定运行。

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loginid=jiangkejun@cmdc.chinamobile.com,time=2022-03-17 19:18:21,ip=120.229.34.168,doctitle=MT7976CN_Datasheet_1.2.pdf,company=

Version: 1.2

Release date: 2021/11/15

MT7976CN Datasheet

802.11ax Wi-Fi RF Chip

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Table of Contents

Document Revision History .............................................................................................................................. 2

Table of Contents............................................................................................................................................. 3

1 System Overview ................................................................................................................................... 5

Functional Block Diagram .................................................................................................................. 5

Features............................................................................................................................................. 6

2 Pin Definitions ....................................................................................................................................... 7

Pin Layout .......................................................................................................................................... 7

IO Definitions .................................................................................................................................... 8

Pin Definitions ................................................................................................................................... 9

3 Electrical Characteristics ...................................................................................................................... 13

Absolute maximum rating ............................................................................................................... 13

Recommended operating range ..................................................................................................... 13

Power Supply Specifications ........................................................................................................... 13

Digital Logic Characteristics ............................................................................................................. 14

MT7976CN TOP Building Blocks ...................................................................................................... 16

Wi-Fi ................................................................................................................................................ 16

4 XO and Bootstrap ................................................................................................................................ 18

XTAL oscillator ................................................................................................................................. 18

5 Mechanical Information ...................................................................................................................... 19

Device Physical Dimension/Part Number........................................................................................ 19

Ordering Information ...................................................................................................................... 23

Lists of Figures and Tables

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Figure 1-1. MT7976CN block diagram .................................................................................................................... 5

Figure 2-1. MT7976CN pin definition ..................................................................................................................... 7

Figure 3-1. Timing diagram conventions ............................................................................................................... 14

Figure 3-2. Rising and falling times diagram ......................................................................................................... 14

Figure 3-3. 2-wire SPI timing diagram ................................................................................................................... 15

Figure 3-4. Wi-Fi 9-wire SPI access ....................................................................................................................... 15

Figure 4-1. Physical dimension of MT7976CN ...................................................................................................... 19

Figure 4-2. Physical dimension of MT7976CN ...................................................................................................... 23

Table 2-1. I/O definitions ........................................................................................................................................ 8

Table 2-2 MT7976CN common pin descriptions ................................................................................................... 12

Table 3-1 Absolute maximum rating ..................................................................................................................... 13

Table 3-2 Recommended operating range ............................................................................................................ 13

Table 3-3. AVDD18 specifications ......................................................................................................................... 13

Table 3-4. AVDD33 specifications ......................................................................................................................... 13

Table 3-5. Operating conditions of digital logics ................................................................................................... 15

Table 4-1 XTAL oscillator requirement .................................................................................................................. 18

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