STC5425 Datasheet PDF - Connor-Winfield Corporation

Description
   The RoHS 6/6 compliant STC5425 is a single chip clock synchronization solution for line card applications in SDH, SONET, and Synchronous Ethernet network elements.

Functional Specification
Features
- Suitable for SONET, SDH, and Synchronous Ethernet applications
- Supports 4 different frequencies of external oscillator upon soft-reset: 10MHz, 12.8MHz, 19.2MHz, 20MHz
- Provides three 2kHz or 8kHz external frame sync input
- Accepts 5 clock reference inputs
- Supports automatically frequency detection or manually acceptable frequency. Each reference input is monitored for activity and quality
- Automatic, manual, and hard-wired manual reference selection
- Outputs 4 synchronized clock outputs, including 2 frame pulse clocks
- Frequency translation of input clock to a different local line card clock
- 3 clock synthesizers generate frequencies
- Phase-align locking or hit-less reference switching
- Programmable loop bandwidth, from 13Hz to 100Hz
- Programmable phase skew in synthesizer level
- SPI bus interface
- Single 3.3V operation
- IEEE 1149.1 JTAG boundary scan
- Available in TQFP64 package