Bluetooth; Usb; Sim Interface - Nokia 6680 RM-36 Service Manual

RM-36
Nokia Customer Care System Module
Figure 104 Clocking scheme

Bluetooth

Bluetooth provides a fully digital link for communication between a master unit and one or more slave units.
The system provides a radio link that offers a high degree of flexibility to support various applications and
product scenarios. Data and control interface for a low power RF module is provided. Data rate is regulated
between the master and the slave.
The device Bluetooth is based on CSR's BC3 BT ASIC.
The UART1 interface handles the transfer of control and data information between Helen3 and the BT system
(BC3).
The PCM interface is used for audio data transfer between RAP3G and the BT system (BC3).

USB

USB (Universal Serial Bus) provides a wired connectivity between host PC and peripheral devices.
USB is a differential serial bus for USB devices. USB controller (RAP3G) supports USB specification revision 2.0
TM
with full speed USB (12Mbps). The device is connected to the USB host through the Pop-Port connector. The
USB bus is hot plugged capable, which means that USB devices may be plugged in/out at any time.
See Also
• USB interface electrical characteristics (Page 9–33)

SIM interface

The device has one SIM (Subscriber Identification Module) interface and the SIM card location is under the
battery. SIM interface consists of internal interface between RAP3G and Retu and an external interface between
Retu and SIM contacts. SIM interface functionality is located in RAP3G while Retu takes care of power up/down,
card detection, ATR counting and level shifting. For Retu external SIM IF connections, see SIM interface
connections (Page 9–35).
The SIM IF is shown in the following figure:
Page 9–16 Company Confidential Issue 1
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