The SCS3022 is an integrated chip solution for timing card synchronization and clock generation in SONET/ SDH network edge elements. The device is fully compliant with Telcordia GR-1244-CORE, GR-253-Core stratum 4, 4E and SMC requirements, ITU-T G.812 for Type IV, V, and VI and G.813 for SEC requirements. All phase lock and output signal generation is digital for accurate and consistent performance.

The SCS3022 device accepts two reference inputs and generates three synchronous clocks. All output signals are directly digitally synthesized, requiring no external or internal VCO or analog PLLs. Device control is via hardware pins for simplified application integration and streamlined operation. 

	Complies with Telcordia GR-1244-CORE, GR-253 stratum 4 and 4E requirements, ITU-T G.812 for Type IV, V, and VI and G.813 for SEC requirements
	Supports freerun, locked, and holdover modes
	Accepts and auto-detects 2 reference inputs at 8Khz, 1.544Mhz, 2.048Mhz, and 19.44Mhz
	Input reference frequencies are automatically detected
	Three output signals: 8Khz framing, 19.44Mhz, and one user selectable at 1,2,4 or 8 x 2.048Mhz or 1,2,4 or 8 x 1.544Mhz
	Supports hardwire pins to select the active reference and output frequency
	Frequency ramp control during reference switching
	Hit-less reference switching (<5nS, <2nS typical)
	10-6 ppm holdover accuracy
	1.6Hz bandwidth filter
	IEEE 1149.1 JTAG boundary scan
	3.3V and 2.5V supplies
	Available in FBGA144 package

SCS3022 Product Brief                    SCS3022 Product Data Sheet