Aurora, Ill. Connor-Winfield Corp. has introduced the STC5230 single-chip synchronous clock solution for SDH, SONET, and Synchronous Ethernet network elements. The device is fully compliant with ITU-G.813 and Telcordia GR1244 and GR253.
The STC5230 accepts 12 reference inputs and generates 9 independent synchronized output clocks. Reference input frequencies are automatically detected, and inputs are individually monitored for quality. Active reference selection may be manual or automatic. All reference switches are hitless. Synchronized outputs may be programmed for a wide variety of SONET and SDH as well as Synchronous Ethernet frequencies.
Two independent timing generators, T0 and T4, provide the essential functions for Synchronous Equipment Timing Source (SETS). Each timing generator includes a digital phase-locked loop (DPLL), which may operate in the freerun, synchronized, and holdover modes. Both timing generators support master/slave operation for redundant applications. The proprietary SyncLink cross-couple data link provides master/slave phase information and state data to ensure seamless side switches.
A standard SPI serial bus interface provides access to the STC5230's internal control and status registers. The device operates with an external OCXO or TCXO as its MCLK at 20 MHz. The STC5230 is capable of field upgrade with an optional external EEPROM or via the bus interface. The device is available in a TQ100 package.
Product information: STC5230
Connor-Winfield Corp., 1-630-851-4722, www.conwin.com