User's Manual

148603 Project Document

148603 Specification and Integration Guide

Confidential Material – Disclosure Strictly Prohibited. "Ni ckel Leucochroic Puffin"

6.1.1. WLAN Power Consumption

 System Draws for MPA3 Guidance:

o Software Low Power Mode – Extended Low Power Mode (ELP,

RTTT=Sleep Mode)

 Description : In this mode, MAC, PHY, and DRPw are in shutdown

mode. The WL1283 SoC will not be able to receive packets. While

in ELP mode, the WL1283 WLAN IP operates on slow clock only.

 Requirements: Processor sends SDIO (or RTTT UART) commands

to the WLAN core.

 In case of critical suspend need to disable wake on WL_IRQ.

 See Error! Reference source not found. on page Error!

Bookmark not defined.

o Highest Current Mode

 VBAT :Transmitting CW 22dBm on 2.4GHz (This will change

based on EV2 /DV results and the limitation in output power)

 VIO: Loading FW

o Worst Case Suspend Mode - Wake on LAN (WOWL)

 Description : WAKE ON LAN is designed to block packets from

going up from the firmware layer into the driver layer.

 Requirements: The enabling of this feature requested two separate

different commands.1. Enable the feature. 2. Configure the filter

different variants. If the filter is activated and the user didn't define

the filter variants, then all packets will be blocked from arriving to

the driver layer.

 Current draws are approximate based and are solely based on TI

solution specification: Dynamic mode with Beacon (DTIM = 1 ;

TBTT = 100 ms; Beacon duration ~1.6 ms ; Rate=1 Mbps) Beacon

in Listen mode This mode reflects results with software drivers and

not the RTTT tool.

 Other WLAN Core Discrete Power Modes:

Together with ELP there are 4 discrete power modes for the WLAN Core. The other

three are:

o Awake mode

 In this mode MAC, PHY, and DRPw are fully active and various

RT3 functions are all active. While in this mode, power

consumption is not optimized.

o Listen mode

 In Listen mode, MAC and Phy are awake, but DRPw shuts down

one of the RF channels. While in this mode, the WL1283 SoC will

accept only 11b packets; OFDM packets are not supported. This

mode saves power while the WL1283 SoC is active and ready to

receive a new packet.

o StandBy (Power Down Mode)