STLC2500A View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'STLC2500A' PDF : 37 Pages View PDF
General specification
STLC2500A
6.11.2
collision and it allows the maximization of the 2.4 GHz ISM bandwidth usage for both
devices while preserving the quality of some critical types of link.
Algorithm 2: WLAN master
In case the STLC2500A has to cooperate in a collocated scenario with a WLAN chip that
does not support a PTA based algorithm, a simpler mechanism can be put in place. The
interface is reduced to 1 line.
Figure 8. ALgorithm 2: WLAN master
STLC2500
RF_NOT_ALLOWED
WLAN
6.11.3
When the WLAN has to operate, it alerts HIGH the RF_NOT_ALLOWED signal and the
STLC2500A will not operate while this signals stays HIGH.
This mechanism permits to avoid packet collision in order to make an efficient use of the
bandwidth but cannot provide guaranteed quality over the Bluetooth links.
Algorithm 3: Bluetooth master
This algorithm represents the symmetrical case of Section 6.11.2. Also in this case the
interface is reduced to 1 line.
Figure 9. ALgorithm 3 - Bluetooth master
STLC2500
RF_NOT_ALLOWED
WLAN
6.11.4
6.11.5
When the STLC2500A has to operate it alerts HIGH the RF_NOT_ALLOWED signal and
the WLAN will not operate while this signals stays HIGH.
This mechanism permits to avoid packet collision in order to make an efficient use of the
bandwidth, it provides high quality for all Bluetooth links but cannot provide guaranteed
quality over the WLAN links.
Algorithm 4: Two-wire mechanism
Based on algorithm 2 and 3, the Host decides, on a case-by-case basis, whether WLAN or
Bluetooth is master.
Algorithm 5: Alternating Wireless Medium Access (AWMA)
AWMA utilizes a portion of the WLAN beacon interval for Bluetooth operations. From a
timing perspective, the medium assignment alternates between usage following WLAN
procedures and usage following Bluetooth procedures.
The timing synchronization between the WLAN and the STLC2500A is done by the HW
signal MEDIUM_FREE.
28/37
Share Link: 
