STLC2411 STMicroelectronics, STLC2411 Datasheet - Page 15

• Manufacturer Part Number: STLC2411
• Description: Bluetooth Class I 1.8V 0.721Mbps 132-Pin TFBGA
• Manufacturer: STMicroelectronics

Specifications of STLC2411

• Package: 132TFBGA
• Power Class: Class I
• Maximum Data Rate: 0.721 Mbps
• Operating Supply Voltage: 1.8 V
• Lead Free Status / Rohs Status: Not Compliant

Sleep Mode. If some HCI transmission is needed, the UART link will be reactivated, using one of the two
ways explained in 7.5, and the STLC2411 will move from the Deep Sleep Mode to the Sleep Mode.
7.10.2 INQUIRY/PAGE SCAN
When only inquiry scan or page scan is enabled, the STLC2411 will go in Sleep Mode or Deep Sleep
Mode outside the receiver activity. The selection between Sleep Mode and Deep Sleep Mode depend on
the UART activity like in SNIFF or PARK.
7.10.3 NO CONNECTION
If the Host places the UART in low power and there is no activity, then the STLC2411 can be placed in
Deep Sleep Mode.
7.10.4 ACTIVE LINK
When there is an active link (SCO or ACL), the STLC2411 cannot go in Deep Sleep Mode whatever the
UART state is. But the STLC2411 baseband is made such that whenever it is possible, depending on the
scheduled activity (number of link, type of link, amount of data exchanged), it goes in Sleep Mode.
7.11 SW initiated low power mode
A wide set of wake up mechanisms are supported.
7.12 Bluetooth - WLAN coexistence in collocated scenario
The coexistence interface uses 4 GPIO pins, when enabled.
Bluetooth and WLAN 802.11 b/g technologies occupy the same 2.4 GHz ISM band. STLC2411 imple-
ments a set of mechanisms to avoid interference in a collocated scenario.
The STLC2411 supports 5 different algorithms in order to provide efficient and flexible simultaneous func-
tionality between the two technologies in collocated scenarios:
– Algorithm 1: PTA (Packet Traffic Arbitration) based coexistence algorithm defined in accordance with
– Algorithm 2: the WLAN is the master and it indicates to the STLC2411 when not to operate in case of
– Algorithm 3: the STLC2411 is the master and it indicates to the WLAN chip when not to operate in case
– Algorithm 4: Two-wire mechanism
– Algorithm 5: Alternating Wireless Medium Access (AWMA), defined in accordance with the WLAN
The algorithm is selected via HCI command. The default algorithm is algorithm 1.
7.12.1 Algorithm 1: PTA (Packet Traffic Arbitration)
The Algorithm is based on a bus connection between the STLC2411 and the WLAN chip:
By using this coexistence interface it's possible to dynamically allocate bandwidth to the two devices when
simultaneous operations are required while the full bandwidth can be allocated to one of them in case the
other one does not require activity. The algorithm involves a priority mechanism, which allows preserving
the quality of certain types of link. A typical application would be to guarantee optimal quality to the Blue-
the IEEE 802.15.2 recommended practice.
simultaneous use of the air interface.
of simultaneous use of the air interface.
802.11 b/g technologies.
STLC2411
WLAN
STLC2411
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