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Digital phase looked loops
Fully synchoronous digital phase looked loop implementation: • DDS (Direct Digital Syntehzis) program device as VCO generator • Configurable phase loop holding range • Digital phase detector, with no capture range limitation • Frequency deviation memory Block diagram 
Description Digital phase looked loop was designed for digital transmission receivers. Parametrized VCO generator characteristic (comparable with characteristics of tunable quarz generators) allows to minimalize recovered clock phase jitter. Additional AIS signal block frequency error adaptation, making receiver invulnerable for short transmission interruptions. Application examples: Cable regenerator RK-128 V5.2 ISDN Access Node ISDN-IP gateway DSTGgateways Optical Converter KOE-4 AWP-IŁ Communication Device MSB-2 Bit Error Rate Meter |