Table Of Contents - Infineon AIROC CYW43012 Manual

Low-power system design with AIROC™ Wi-Fi & Bluetooth® combo
chip and PSoC™ 6 MCU

Table of contents

Table of contents
About this document ....................................................................................................................... 1
Table of contents ............................................................................................................................ 2
1 Introduction .......................................................................................................................... 4
2 Low-power overview .............................................................................................................. 5
2.1 AIROC™ CYW43012 Wi-Fi & Bluetooth® combo chip power modes ....................................................... 5
2.2 PSoC™ 6 MCU power modes ................................................................................................................... 6
2.3 AIROC™ CYW43012 Wi-Fi & Bluetooth® combo chip power-related hardware signals ......................... 7
2.4 Power mode transition ........................................................................................................................... 8
3 WLAN power optimization techniques ..................................................................................... 10
3.1 IEEE 802.11 (Wi-Fi) power saving .......................................................................................................... 10
3.1.1 Beacon interval ................................................................................................................................ 10
3.1.2 Listen interval ................................................................................................................................... 10
3.1.3 DTIM period ...................................................................................................................................... 10
3.1.4 Power saving methods ..................................................................................................................... 11
3.1.4.1 Power save poll ........................................................................................................................... 12
3.1.4.2 802.11 power save without poll .................................................................................................. 12
3.1.4.3 Association timeout limit ............................................................................................................ 13
3.1.5 802.11ac-friendly features ............................................................................................................... 13
3.2 Wi-Fi power save implementation ........................................................................................................ 13
3.2.1 Wi-Fi Host Driver (WHD) power save interface ................................................................................ 13
3.2.2 Cyclic timers in network stack ......................................................................................................... 16
3.3 Host offloads to WLAN device ............................................................................................................... 17
3.3.1 ARP offload ....................................................................................................................................... 17
3.3.2 Packet filter offload .......................................................................................................................... 18
3.3.2.1 Network layer or EtherType filter ............................................................................................... 20
3.3.2.2 Transport layer/IP protocols ...................................................................................................... 20
3.3.2.3 Applications layer/TCP and UDP port numbers ......................................................................... 20
3.3.3 TCP keepalive offload ...................................................................................................................... 21
4 Bluetooth® power optimization techniques .............................................................................. 23
4.1 Advertisement events ........................................................................................................................... 23
4.2 Connection events ................................................................................................................................ 24
4.2.1 Connection interval .......................................................................................................................... 24
4.2.2 Use slave latency .............................................................................................................................. 24
4.2.3 Bluetooth® LE parameters in Bluetooth® Configurator .................................................................. 24
5 PSoC™ 6 MCU power optimization techniques .......................................................................... 26
5.1 Core voltage and operating frequency ................................................................................................. 26
5.2 Reducing the leakage in Deep Sleep .................................................................................................... 26
5.3 RTOS tickless mode ............................................................................................................................... 28
5.4 Additional power optimization techniques ......................................................................................... 28
6 Low power assistant (LPA) ..................................................................................................... 29
6.1 LPA configuration .................................................................................................................................. 29
6.2 Using LPA in ModusToolbox™ software ................................................................................................ 32
7 Power measurement using CY8CKIT-062S2-43012..................................................................... 36
7.1 Hardware setup ..................................................................................................................................... 36
7.2 mtb-example-wifi-wlan-lowpower ....................................................................................................... 37
Application note 2 002-27910 Rev. *C
2023-05-29