The SMIC 0.13um Low Leakage APLL is a programmable Analog PLL suitable for high speed clock generation. The high speed VCO of this PLL can run up to 1000MHz. It contains a 64 (max) input clock divider, a 128 (max) feedback clock divider and an 8 (max) output clock divider. By setting PLL_DM, PLL_DN and PLL_DP to different values, the output clock will be locked at different multiples of the input frequency.
A lock indicator is also included in this PLL. Its output shows whether the output clock is at the right multiples of the input clock.