文件编号Document No.ESP-07-2-007-03文件名称Document Name产品/工艺变更通知Product/Process Change Notice(PCN)文件版本Document Version1.4保存期限Retention Period5 年5 yearswww.espressif.com Page1/4ESP32-S3、ESP8685、ESP32-C3 芯片规格书中蓝牙的“天线分集”功能移除Remove "antenna diversity" Feature of Bluetooth LE in ESP32-S3, ESP8685, ESP32-C3 ChipDatasheetsPCN 编号PCN No.PCN20221203提出日期Issue Date of PCN2022/12/23变更日期Proposed Date of Change2022/12/29预计变更后产品首次出货日期Proposed Date of FirstShipment After ChangeNA，产品无变更Product has nochange.PCN 类型 / PCN Category客户需要批准/ Customer Approval Required客户通知/ Customer Notification1.影响产品名称/ Affected Product NameESP32-S3 SeriesESP8685 SeriesESP32-C3 Series2.变更原因/ Reason for Change在ESP32-S3、ESP8685和ESP32-C3芯片规格书>低功耗蓝牙>低功耗蓝牙射频和物理层章节，“天线分集”被列为特性之一。然而，目前没有方案支持该特性，原因如下： 蓝牙是跳频工作的，每个频率的最优天线可能不同，而目前芯片的硬件设计及固件都不支持根据工作频率的变化选用天线，因此无法提供合适的应用方案。In ESP32-S3, ESP8685 and ESP32-C3 chip datasheets > Bluetooth LE > Bluetooth LE Radio and PHY, theitem “antenna diversity” is listed as a feature. Yet, it is currently not supported for the reason below:BLE is a frequency hopping system, and the best antenna for each working frequency may bedifferent. However, the hardware design and firmware of the current chip can’t dynamically change theantenna according to the operating frequency.3. 变更描述/ Description of Change在 ESP32-S3、ESP8685 和 ESP32-C3 芯片规格书 > 低功耗蓝牙 > 低功耗蓝牙射频和物理层章节，移除“天线分集”。In ESP32-S3, ESP8685 and ESP32-C3 chip datasheets > Bluetooth LE > Bluetooth LE Radio and PHYsection, remove the item “antenna diversity”.4. 变更对比/ Change Comparison请见附录 I：变更对比。Please refer to Appendix I: Change comparison. www.espressif.com Page2/45. 变更影响/ Impact of Change1) 品质和性能/ Quality & Performance: 无影响/ No impact2) 交期/ Delivery: 无影响/ No impact3) 生产料号/ Material Part Numbers (MPN): 无影响/ No impact4) 认证/ Certification: 无影响/ No impact5) 软件/ IDF：无影响/ No impact6. 变更前后产品处理/ How to Deal with ProductsNA，产品无变更。Product has no change.7.相关报告/ Related Report(s):Related ECN No.ECN-2022-045 www.espressif.com Page3/4Appendix I 变更对比/ Change Comparison1. 变更基本信息/ Change General Information产品系列Product Series变更前数据规格书版本Datasheet Version Before Change变更后数据规格书版本Datasheet Version After ChangeESP32-S3v1.2v1.3ESP8685v1.0v1.1ESP32-C3v1.3v1.4注/ Note：乐鑫技术规格书可查阅技术文档。Espressif technical Datasheet can see on Technical Documents.2. 变更详细信息/ Change Detailed Information以ESP32-S3芯片数据规格书为例：Take ESP32-S3 Chip Datasheet as an example:TypeChang BeforeChange AfterCN VersionEN Version www.espressif.com Page4/4邮件订阅Espressif Email Notifications乐鑫为注册用户提供电子邮件通知服务，用户可通过乐鑫订阅系统接收技术文档更新、新闻通讯、PCN 等邮件通知。Espressif sends email notifications of technical documentation changes, along with newsletters, PCNs andother valuable information, to subscribed customers only. If you wish to stay updated on our products andservices, please subscribe here.客户响应要求Customer Response Requirements需客户批准的变更/ Change Requiring Customer Approval：a) 客户须在乐鑫发出 PCN 后的 30 天内告知乐鑫已收到 PCN。如客户未在接收到 PCN 后的 30 天内告知已收到，则视为客户收到变更。Customers are requested to acknowledge receipt of the PCN within 30 calendar days from the date ofissue of the PCN. Customers would be considered as notified 30 calendar days after issue of the PCN if noacknowledgement is received.b) 自发布 PCN 之日起 90 天内，客户没有任何其他反馈，则表示客户接受该 PCN。The lack of any additional responses from customers within 90 calendar days from the date of issue of thePCN constitutes acceptance of the proposed changes.客户通知/ Customer Notification：a)客户需在乐鑫发出PCN后14天内通知乐鑫收到该PCN。 如客户未在接收到PCN 14日反馈乐鑫，则视为客户确认该PCN。Customers are requested to acknowledge receipt of the PCN within 14 calendar days from the date ofissue of the PCN. Customers would be considered as having acknowledged the PCN if no response isreceived after 14 calendar days.请反馈至pcn@espressif.com。Please send feedback to pcn@espressif.com.客户批准/确认信息Customer Approval/Acknowledgement and Remarks客户公司全称：Customer’s Company Name:PCN 评审结果/ PCN Review Result：批准/确认 Accepted/Acknowledged不批准/ Rejected需要分析/ Further Analysis Required客户意见/Comment:公司代表人姓名Representative’s Name:公司代表人职责Representative’s Job Title:公司代表人签名Representative’s Signature:日期Date: