LG GB130kf750, Руководство по обслуживанию

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• Flash tied to the individual chip via an ID using e-fuses, that is, each X-GOLDTM102 chip has its
own fused ID.
• Harware support of SHA1 algorithm to reduce the booting time.
Further details on the X-GOLDTM102 security concept are not publicly documented.
GSM Cipher Unit
This unit on the TEAKlite bus calculates the GSM/EDGE encryption keystream and the
GSM/EDGE decryption
keystream. It implements the following algorithms: A5/1, A5/2, and A5/3.
3.1.11 Asynchronous Operation Mode Concept
The X-GOLDTM102 can operate in either:
• The traditional synchronous mode with the 26 MHz system clock synchronized on the base
station
• A special asynchronous mode (XO concept).
In the asynchronous mode the 26 MHz clock input is not synchronized with the base station; the
residual frequency offset is compensated in the digital signal processing domain. This processing
includes frequency and timing compensation of the baseband and voiceband signals.