Datasheet

3 Functional Description
3.6.5 WiFi MAC
ESP32-S3 implements the full 802.11 b/g/n Wi-Fi MAC protocol. It supports the Basic Service Set (BSS) STA
and SoftAP operations under the Distributed Control Function (DCF). Power management is handled
automatically with minimal host interaction to minimize the active duty period.
The ESP32-S3 Wi-Fi MAC applies the following low-level protocol functions automatically:
• 4 × virtual Wi-Fi interfaces
• Simultaneous Infrastructure BSS Station mode, SoftAP mode, and Station + SoftAP mode
• RTS protection, CTS protection, Immediate Block ACK
• Fragmentation and defragmentation
• TX/RX A-MPDU, TX/RX A-MSDU
• TXOP
• WMM
• GCMP, CCMP, TKIP, WAPI, WEP, and BIP
• Automatic beacon monitoring (hardware TSF)
• 802.11mc FTM
3.6.6 Networking Features
Users are provided with libraries for TCP/IP networking, ESP-WIFI-MESH networking, and other networking
protocols over Wi-Fi. TLS 1.2 support is also provided.
3.7 Bluetooth LE
ESP32-S3 includes a Bluetooth Low Energy subsystem that integrates a hardware link layer controller, an
RF/modem block and a feature-rich software protocol stack. It supports the core features of Bluetooth 5 and
Bluetooth mesh.
3.7.1 Bluetooth LE Radio and PHY
Bluetooth Low Energy radio and PHY in ESP32-S3 support:
• 1 Mbps PHY
• 2 Mbps PHY for high transmission speed and high data throughput
• Coded PHY for high RX sensitivity and long range (125 Kbps and 500 Kbps)
• Class 1 transmit power without external PA
• Listen before talk (LBT), implemented in hardware
• Antenna diversity with an external RF switch. This switch is controlled by one or more GPIOs, and used to
select the best antenna to minimize the effects of channel imperfections.
3.7.2 Bluetooth LE Link Layer Controller
Bluetooth Low Energy Link Layer Controller in ESP32-S3 supports:
• LE advertising extensions, to enhance broadcasting capacity and broadcast more intelligent data
• Multiple advertisement sets
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ESP32-S3 Series Datasheet v1.2