Gps Interface; Wlan Interface; Camera Interface; Audio Interface - Nokia RM-529 Service Manual

• Analogue supply +2.4V to +3.6V
• Digital interface supply +1.70V to analogue supply voltage.
For magnetometer interface, see the System module block diagram in

GPS interface

The device includes an inbuilt GPS receiver and it works as a stand-alone positioning device.
The GPS system is connected to RAPU ASIC.
For GPS interface, see the System module block diagram in

WLAN interface

The phone contains a WLAN transceiver, that provides a fully integrated wireless radio solution. The WLAN
transceiver supports the IEEE 802.11 standards for low error rate data transfer between mobiles and WLAN
networks. Data rates up to 54Mbps are possible in 802.11g mode of operation.
WLAN shares the antenna with Bluetooth.
The WLAN software is downloaded from RAPU when WLAN is turned on, over the dedicated SPI interface.
For WLAN interface, see the System module block diagram in

Camera interface

The device has an autofocus (AF) type main camera.
In this device the main camera, the secondary camera and the camera flash driver are connected directly to
RAPU and controlled by the I2C bus, port 0. Both cameras are supplied by separate voltage regulators enabled
by the camera software (GENIOs).
Control signals to and from the camera flash driver are connected directly to RAPU (GENIOs).
For camera interface, see the System module block diagram in

Audio interface

The System module block diagram illustrates the audio interface of the phone, see
(page 6–5).
The digital uplink microphones are connected directly to RAPU. There are two uplink microphones, primary
and secondary, which are required for the uplink Two Microphone Noise Cancellation (2micNC) algorithm
and are located at the lower end of the phone.
Stereo output is provided by a separate stereo audio amplifier which is connected to EM ASIC. The output
from the stereo audio amplifier is fed to the AV connector.
The earpiece is driven by Tulppa chip which includes an amplifier and Earpiece Active Noise Control (EANC).
The EANC uses two digital microphones: the one next to the earpiece is called error microphone and the other
close to the main camera is called reference microphone.
The stereo IHF speaker is driven directly by a built-in stereo amplifier included in EM ASIC.
The vibra is driven directly by a built-in amplifier included in EM ASIC.

Bluetooth interface

Bluetooth provides a fully digital link for communication between a master unit (the phone) and one or more
slave units (e.g. a wireless headset). Data and control interface for a low power RF module is provided by the
BTHFM module.
Bluetooth is physically integrated with FM radio in the BTHFM module ASIC, but from a functional point of
view they have nothing in common.
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Phone description (page
Phone description (page
Phone description (page
Phone description (page
RM-529; RM-530; RM-584
System Module
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Phone description
Issue 1