User's Manual

Product Brief – Airborne SDIO/SPI 802.11b/g Radio Quatech, Inc.
846-8310-240 June 2010 16
7.0 Bluetooth Coexistence Interface
The Bluetooth coexistence interface implemented on the Airborne 802.11b/g WLRG-RA-
DP600 family of radio‟s is a three wire configuration, designed to support the identified
coexistence recommended practices in the IEEE 802.15.2 standard for the coexistence
of WLAN and Bluetooth devices. This includes collaborative TDMA method described as
Packet Traffic Arbitration (PTA).
The Airborne radio includes a PTA Controller integrated into the BB/MAC processor; this
requires the Bluetooth device to act as a PTA slave to the PTA control module.
Table 12 - BT Interface Pin Definition
Signal
Direction
Description
RF_ACTIVE (Active High)
Input
Asserted by the BT device during Rx or Tx slots that it
wishes to use.
STATUS
Input
Pulsed if the BT device has a priority need for the slot.
After that it indicates the BT radio mode (Tx or RX)
TXCONF (Active Low)
Output
Transmission confirmed. De-asserted when the radio
wants to prevent the BT device‟s use of the medium