User's Manual

WiBear11n Data Sheet
Version 1.18
Copyright © 2013 lesswire AG www.lesswire.com Page 12 of 20
Host Interfaces
SDIO Interface
WiBear11n module supports a SDIO device interface that conforms to the industry standard SDIO Full-Speed
specification and allows a host controller using the SDIO bus protocol to access the WLAN and Bluetooth
functions. The module also supports High Speed mode as defined in the SDIO 1.2 specification.
The module's SDIO host interface pins are powered from the VIO voltage supply.
A module acts as the device on the SDIO bus. The SDIO interface supports SDIO modes at the full clock range
of 0 to 50 MHz which allows a maximum throughput of 200Mbps.
Clock
T
WH
f
PP
Input
Output
T
WL
T
ISU
T
IH
T
ODLY
T
OH
Clock
T
WH
f
PP
Input
Output
T
WL
T
ISU
T
IH
T
ODLY
Figure 9: SDIO Protocol Timing Diagram
Figure 10: SDIO Protocol Timing Diagram at High Speed Mode