Nokia RX-44 Service Manual page 180

Parameter
Data rates and modulations
The RF block diagram is shown below:
STLC4560 implements 802.11b/g WLAN radio for embedded, low power and small form factor mobile
applications.
STLC4560 is a three-die multichip module. The system implementation is partitioned to radio, baseband and
energy management dies.
STLC4560 has a fully integrated radio chip including a direct-conversion transceiver, RF synthesizer and VCO,
and high-speed data converters.
The baseband includes required logic and interfaces to enable simultaneous use of BT and WLAN.
The energy management chip integrates required power management functions to operate the system from
VBAT (3.0 – 5.5 V). In default configuration the chip has SMPS to generate 1.2 V digital core voltage, two 1.8
V LDOs for RF and 2.8 V LDO for PA bias supply.
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IEEE802.11b:
1 Mb/s BPSK, Barker spreading
2 Mb/s QPSK, Barker spreading
5.5 and 11 Mb/s QPSK, CCK coding
IEEE802.11g:
6 and 9 Mb/s BPSK
12 and 18 Mb/s QPSK
24 and 36 Mb/s 16QAM
48 and 54 Mb/s 64QAM
Figure 50 WLAN RF block diagram
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System Module
Value
RX-44
Issue 1