Frequency Timing and Translation Modules NEW Frequency Controlled Crystal Oscillator (FCXO) Advanced Stratum3 Module Model Name NW36M25LA n Main Application SONET, SDH, FTTH, Communications equipment n Features l Four inputs, Stratum 3 solution for the Synchronous Timing Source in SONET/SDH network elements. l Accepts 4 reference inputs in 9 steps from 8 kHz to 77.76 MHz (See specification below) l Compliant with Telecordia GR1244CORE, GR253 and ITU-T G.812 / G.813. l Hit-less reference switching. * Module markings may be changed without notice. l Frequency ramp control during reference switching. l Supports Master / Slave operation l Three output signals: one selectable (See specification below) up to 77.76 MHz, one fixed at 8 kHz and 1.544 MHz or 2.048 MHz BITS output. n Specifications Model Item Supply Voltage (VCC) NW36M25LA +3.3 V DC ±5% Current Consumption 150 mA typ Operating Temp. Range 0 to +70°C 4-CMOS Input Levels 8 kHz, 1.544 MHz, 2.048 MHz, 12.96 MHz, 19.44 MHz, 25.92 MHz, 38.88 MHz, 51.84 MHz or 77.76 MHz Input Reference Frequency Three CMOS outputs Output Levels OUTPUT 1: 12.96 MHz, 19.44 MHz, 25.92 MHz, 38.88 MHz, 51.84 MHz or 77.76 MHz Output Frequency 1 M/S_OUT: 8 kHz, BITS_CLK: 1.544 MHz or 2.048 MHz Output Frequency 2,3 ±4.6×10−6 max. Free-run accuracy ±0.37×10−6 max. Holdover accuracy 0.025 Hz to 1.6 Hz PLL bandwidth (user programmable) n List of Ordering Codes Output frequency (MHz) OUTPUT 1: One selectable up to 77.76 MHz Ordering Code NW36M25LA-[ ]-NSA3437A [ ]: OUTPUT1 frequency to order. For example, in 19.44 MHz case, NW36M25LA-19.44M-NSA3437A n Dimensions 36.83±0.5 28 mm 15 25.4±0.5 21.59±0.3 14 1 3.18±0.3 6.0max 1.0±0.1 0.457±0.13 2.54±0.2 PAD No. Connection PAD No. #1 LOS #15 Connection NC #2 LOL #16 T1/E1 #3 M/S REF #17 HOLD/GOOD #4 REF1 #18 TDO #5 REF2 #19 TCK #6 REF3 #20 GND #7 REF4 #21 SPI_ENBL #8 TDI #22 SPI_IN #9 TMS #33 VCC #10 TRST #24 SPI_ENBL #11 BITS_CLK #25 RESET #12 M/S_OUT #26 SPI_OUT #13 OUTPUT1 #27 SPI_INT #14 NC #28 MASTER SELECT 33.02±0.2 co33_080205_NW36M25LA_e1