LG GB130kf750, Руководство по обслуживанию

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C166 Debug Concept
The debugging of the C166 uses the OCDS and the Cerberus.
The X-GOLDTM102 also inlcudes a Real Time Trace module for software debugging.
TEAKLite Debug Concept
TEAKlite debugging uses the OCEM and the SEIB.
3.1.9 Power Management
The X-GOLDTM102 provides the power management unit (PMU) for the complete mobile phone
application. The integrated PMU is directly connected to the battery and provides a set of linear
voltage regulators (LDO’s). These LDO’s generate all required supply voltages and currents
needed in a low feature mobile phone.
The charger unit controls the charging of NiCd, NiMh, LiPolymer and LiON batteries. Only a few
external parts are required to support charging from a DC wall adaptor. In addition, the charger
generates the power-on reset after battery insertion or charger connection. The supported battery
voltage range is 3.1 to 5.1 V for NiCd/NiMH and 3.1 to 4.6 V for LiPolymer and LiON batteries. The
upper voltage limit is programmable.The charger supports constant current precharging,
full-charging (pulsed charging) and software controlled constant current charging. The charging
functions are protected by hardware timer. Charger idle voltages up to 20 V can be handled. An
integrated overvoltage protection protects batteries and system against overvoltage.
White/blue backlight generation is supported with a special driver for very a low external parts
count. Power consumption during operation phases is minimized due to flexible clock switching
In the Standby Mode most parts of the device are switched off, only a small part is running at
32kHz and the
controller RAM is switched to a power saving mode. The TEAKLite ROM can be switched off
during Standby via SW.
This Units (associated to the Measurement Unit) provides also support for a accessory
detection .
3.1.10 On-Chip Security Concept
Secure boot is based on a public/private key approach. Flash images that are not signed with the
private key during phone manufacture cannot be loaded. Verification of the Flash code is done with
the public key. The public key as well as hash and verify algorithms are stored in the ROM, which
ensures a hardware secured boot procedure.
The following security features are supported:
• Prevention of illegal Flash programming
• Flash programming makes use of the X-GOLDTM102 ID for personalization checks with IMEI and
SIM-lock protection
The security features use the following mechanism:
• Boot ROM flow:
– Controls the boot transition to external flash
– Controls the flash update