User Guide

WE866C6 Hardware Design Guide
1VV0301658 Rev. 1 Page 24 of 58 2020-06-16
Interface Ports and Signals
5.2.1. WLAN Interfaces
The following figure shows the WLAN related interface connection between the WE866C6
module and the LTE modem module.
The following clauses describe the various interfaces.
5.2.1.1. SDIO Interface
SDIO is the main interface used for WLAN Data and control.
The WE866C6 has a 4-bit SDIO port which supports SDIO3.0 standard with up to 200Mhz
clock. The figure above shows the SDIO interface connection diagram.
5.2.1.2. WL_EN
WL_EN is used to control the WLAN function of WE866C6 module. When WL_EN is at a
high level, WLAN function will be enabled.
5.2.1.3. WOW
The purpose of the WOW (Wake on Wireless) signal is to wake up the host. When WOW
signal is driven low, it can wake up the host.
NOTE:
The corresponding host GPIO used with WOW must support sleep
wakeup functionality. The selected host GPIO must be properly
configured.