User Guide

Figure 69 WLAN and BT block diagram

WLAN signals and interfaces

The serial interface is connected to the host SPI interface block. WLAN/BT coexistence signaling interface

(CXS) enables time-shared operation of BT and WLAN transceivers so that the user perceives simultaneous

operation of both systems.

WLAN interface CXS

WLAN interface CXS (Coexistence Signaling) Interface between BTH and WLAN modules is to facilitate

collocation in a terminal that has BTH and WLAN.

The PTA Control state machine operates inside the WLAN chipset. In the scheme, the WLAN chipset is the

master. The BT module operates as a slave to the PTA control module.

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