Crystal(6 Mhz, X100) - LG -A230 Service Manual

3. TECHNICAL BRIEF
3.4 Crystal(26 MHz, X100)
Figure. 3.4.1 Crystal Oscillator External Connection
The X-GOLDTM215 RF-Subsystem contains a fully integrated 26 MHz digitally controlled crystal oscillator,
designed for 8 pF crystals. The only external part of the oscillator is the crystal itself. Overall pulling range of
the DCXO is approximately 55 ppm, controllable by a 13-bit tuning word.
This frequency serves as comparison frequency within the RF-PLL and as clock frequency for the digital
circuitry.
The 26 MHz reference clock can also be applied to external components like Bluetooth or GPS, via the two
buffered output signals FSYS1 and FSYS2.
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