M2006-12A

Integrated Circuit Systems, Inc. Product Data Sheet M2006-12A VCSO BASED FEC CLOCK PLL WITH HITLESS SWITCHING PIN ASSIGNMENT (9 x 9 mm SMT) FIN_SEL1 GND APC DIF_REF0 nDIF_REF0 REF_SEL DIF_REF1 nDIF_REF1 VCC FIN_SEL0 FEC_SEL0 FEC_SEL1 FEC_SEL2 FEC_SEL3 VCC DNC DNC DNC 27 26 25 24 23 22 21 20 19 GENERAL DESCRIPTION The M2006-12A is a VCSO (Voltage Controlled SAW Oscillator) based clock generator PLL designed for clock frequency translation and jitter attenuation. Clock multiplication ratios (including forward and inverse FEC) are pin-selected from pre-programming look-up tables. Includes Hitless Switching and Phase Build-out to enable SONET (GR-253) / SDH (G.813) MTIE and TDEV compliance during reference clock reselection. Hitless Switching (HS) engages when a 4ns or greater clock phase change is detected. This phase-change triggered implementation of HS is not recommended when using an unstable reference (more than 1ns jitter pk-to-pk) or when the resulting phase detector frequency is less than 5MHz. 28 29 30 31 32 33 34 35 36 M2006-12A (Top View) 18 17 16 15 14 13 12 11 10 P0_SEL P1_SEL nFOUT0 FOUT0 GND nFOUT1 FOUT1 VCC GND FEATURES ◆ Reduced intrinsic output jitter and improved power supply noise rejection compared to M2006-12 ◆ Similar to the M2006-02A - and pin-compatible - but adds Hitless Switching and Phase Build-out functions ◆ Includes APC pin for Phase Build-out function (for absorption of the input phase change) ◆ Pin-selectable PLL divider ratios support f...