參數(shù)資料
型號(hào)： STLC2500
廠(chǎng)商： 意法半導(dǎo)體
英文描述： BLUETOOTH⑩ SINGLE CHIP
中文描述： 單芯片藍(lán)牙⑩
文件頁(yè)數(shù)： 16/23頁(yè)
文件大小： 241K
代理商： STLC2500
STLC2500
16/23
operations and of the priority mechanism avoid the interference due to packet 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.
7.11.2 Algorithm 2: WLAN master
In case the STLC2500 has to cooperate, in a collocated scenario, with a WLAN chip not supporting a PTA
based algorithm, it's possible to put in place a simpler mechanism.
The interface is reduced to 1 line:
When the WLAN has to operate, it alerts HIGH the RF_NOT_ALLOWED signal and the STLC2500 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.
7.11.3 Algorithm 3: Bluetooth master
This algorithm represents the symmetrical case of section 7.11.2. Also in this case the interface is reduced
to 1 line:
When the STLC2500 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 pro-
vides high quality for all Bluetooth links but cannot provide guaranteed quality over the WLAN links.
7.11.4 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.
7.11.5 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 Blue-
tooth procedures.
The timing synchronization between the WLAN and the STLC2500 is done by the HW signal
MEDIUM_FREE.
Table 19. WLAN HW signal assignment
WLAN
Scenario 1:
PTA
TX_
CONFIRM
TX_
REQUEST
Scenario 2:
WLAN master
BT_RF_NOT_
ALLOWED
Not used
Scenario 3:
BT master
Not used
Scenario 4:
2-wire
BT_RF_NOT_
ALLOWED
WLAN_RF_
NOT_
ALLOWED
Not used
Not used
Scenario 5:
AWMA
MEDIUM_FREE
WLAN 1
WLAN 2
WLAN_RF_
NOT_
ALLOWED
Not used
Not used
Not used
WLAN 3
WLAN 4
STATUS
OPTIONAL_
SIGNAL
Not used
Not used
Not used
Not used
STLC2500
WLAN
RF_NOT_ALLOWED
STLC2500
WLAN
RF_NOT_ALLOWED
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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