User Guide
Table Of Contents
- Amendment Record Sheet
- Copyright
- Warnings and cautions
- For your safety
- Care and maintenance
- ESD protection
- Battery information
- Company Policy
- Nokia 3610 fold Service Manual Structure
- 1 General information
- 2 Service Tools and Service Concepts
- 3 BB Troubleshooting and Manual Tuning Guide
- General BB troubleshooting guidelines
- Phoenix self tests
- ST_CURRENT_CONS_TEST troubleshooting
- ST_SLEEPCLK_FREQ_TEST troubleshooting
- ST_SLEEP_X_LOOP_TEST troubleshooting
- ST_UEM_CBUS_IF_TEST troubleshooting
- Power and charging troubleshooting
- Interface troubleshooting
- User interface troubleshooting
- Camera module troubleshooting
- Audio troubleshooting
- Bluetooth troubleshooting
- Baseband manual tuning guide
- 4 RF troubleshooting
- 5 System Module
- Glossary

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:
Figure 18 SIM interface
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 IF.
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 respond to the ATR a 3 V interface voltage is used.
RM-429
System Module
Page 5 –12 COMPANY CONFIDENTIAL Issue 1
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