Wlan Functional Description - Nokia MOBILE TERMINAL Service Manual

Interface signals
Signal name
RF
ANT_GPS
LNA_In
Clocking
REF_CLK
GPS_CLK
RTC_CLK
Control
GPS_EN_RESET
AGPS_CLK_REQ
IO_TIMESTAMP_DATAR
DY
IO_PA_EN
Comms
I2C_SCL_U1TX
I2C_SDA_U1RX
Power
VDDS
VBatt 1 & 3
VBatt 2
VSS

WLAN functional description

Functional description
The WLAN Size 4.0 module is a single component Wireless Local Area Network (WLAN) radio access technology
supporting the IEEE 802.11 standards, for low error rate data transfer between mobiles and WLAN networks.
It incorporates a highly optimised WLAN chipset for mobile applications where low cost, small physical size
and low power consumption are important attributes.
The Size 4.0 module houses a medium access controller (MAC) spread spectrum baseband processor with
direct conversion radio interface, a 2.4GHz RF Front End chip and Power Management (PM) IC. Data rates up
to 54Mbps are possible in 802.11g mode of operation.
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COMPANY CONFIDENTIAL
Copyright © 2008 Nokia. All rights reserved.
System Module and User Interface
Function
GPS antenna port
GPS ASIC RF input
Reference Clock = RF Cellular clock, Min 0.2V
Connection of 16.368MHz GPS TCXO
Cellular engine 32768 Hz sleep clock
GPS engine reset
MCU Interrupt when GPS requires CE to be awake
(Host Wakeup)
Strobe for accurately marking in real time,
timing information from the cellular engine.
DATARDY indication to download code through
synchronous operation from cellular engine.
Used to implement PA blanking when cellular PA
is ON
I2C clk line
I2C data line
Cellular engine I/O supply
Phone battery power or SMPS power
Phone battery power
Ground plane
RM-356
pk-pk
Issue 1