Usb, Sim, Μsd; Micro Usb; Sim Interface - Nokia RM-364 Service Manual

RM-364
System Module Description
Mode
SLEEP SLEEP mode is entered only from PWR_ON mode with the aid of SW when the system's
activity is low.
FLASHING FLASHING mode is for SW downloading.
USB, SIM, μSD

Micro USB

The micro USB (Universal Serial Bus) provides a wired connectivity between a PC and peripheral devices. It is
a differential serial bus.
USB 2.0 is supported with full speed (12 Mbps).
Hot swap is supported, which means that USB devices may be plugged in/out at any time.
This phone is provided with a specific connector for µUSB.

SIM interface

The device has one SIM (Subscriber Identification Module) interface. It is only accessible if battery is removed.
The SIM interface consists of an internal interface between RAP and EM ASIC (N2200), and of an external
interface between N2200 and SIM contacts.
The SIM IF is shown in the following figure:
The EM ASIC handles the detection of the SIM card. The detection method is based in the BSI line. Because of
the location of the SIM card, removing the battery causes a quick power down of the SIM interface.
The SIM interface supports both 1.8 V and 3.0 V SIM cards. The SIM interface voltage is first 1.8 V when the
SIM card is inserted, and if the card does not response to the ATR, a 3 V interface voltage is used.
Issue 1
Figure 25 SIM interface
COMPANY CONFIDENTIAL
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Description
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