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STA2416 データシート(PDF) 27 Page - STMicroelectronics

部品番号 STA2416
部品情報  Bluetooth??Baseband with integrated flash
PDF  38 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA2416 データシート(HTML) 27 Page - STMicroelectronics

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STA2416
General specification
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6.12.3
Algorithm 3: Bluetooth™ master
This algorithm represents the symmetrical case of Section 6.12.2: Algorithm 2: WLAN
master. Also in this case the interface is reduced to 1 line.
Figure 8.
Algorithm 3: Bluetooth™ master
When the STA2416 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.
6.12.4
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.
6.12.5
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 Bluetooth™ procedures.
The timing synchronization between the WLAN and the STA2416 is done by the HW signal
MEDIUM_FREE.
STA2416
D05AU1627
WLAN
RF_NOT_ALLOWED
Table 10.
WLAN HW signal assignment
WLAN
Scenario 1:
PTA
Scenario 2:
WLAN master
Scenario 3:
BT master
Scenario 4:
2-wire
Scenario 5:
AWMA
WLAN 1
TX_ CONFIRM
BT_RF_NOT_
ALLOWED
Not used
BT_RF_NOT_
ALLOWED
MEDIUM_FREE
WLAN 2
TX_ REQUEST
Not used
WLAN_RF_ NOT_
ALLOWED
WLAN_RF_ NOT_
ALLOWED
Not used
WLAN 3
STATUS
Not used
Not used
Not used
Not used
WLAN 4
OPTIONAL_ SIGNAL
Not used
Not used
Not used
Not used



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