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Si5348-D-EVB Folha de dados(PDF) 1 Page - Silicon Laboratories |
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Si5348-D-EVB Folha de dados(HTML) 1 Page - Silicon Laboratories |
1 / 54 page Si5348 Rev D Data Sheet Network Synchronizer for SyncE/ 1588 PTP Telecom Boundary (T-BC) and Slave (T-SC) Clocks The Si5348 combines the industry’s smallest footprint and lowest power network syn- chronizer clock with unmatched frequency synthesis flexibility and ultra-low jitter. The Si5348 is ideally suited for wireless backhaul, IP radio, small and macro cell wireless communications systems, and data center switches requiring both traditional and packet based network synchronization. The three independent DSPLLs™ are individually configurable as a SyncE PLL, IEEE 1588 DCO or a general-purpose PLL for processor/FPGA clocking. The Si5348 can also be used in legacy SETS systems needing Stratum 3/3E compliance. The optional digital- ly controlled oscillator (DCO) mode provides precise timing adjustment to 1 ppt for 1588 (PTP) clock steering applications. The unique design of the Si5348 allows the TCXO/ OCXO reference input to determine the device’s frequency accuracy and stability. The Si5348 is programmable via a serial interface with in-circuit programmable non-volatile memory so it always powers up into a known configuration. Programming the Si5348 is easy with ClockBuilder Pro™ software. Factory pre-programmed devices are also availa- ble. Applications: • Synchronous Ethernet (SyncE) ITU-T G.8262 EEC Option 1 & 2 • Telecom Boundary Clock (T-BC) as defined by ITU-T G.8273.2 • IEEE 1588 (PTP) slave clock synchronization • Stratum 3/3E, G.812, G.813 network synchronization KEY FEATURES • Three independent DSPLLs in a single monolithic IC supporting flexible SyncE/ IEEE 1588 and SETS architectures • Ultra-low jitter of 100 fs • Input frequency range: • External crystal: 48 to 54 MHz • REF clock: 5 to 250 MHz • Diff clock: 8 kHz to 750 MHz • LVCMOS clock: 8 kHz to 250 MHz • Output frequency range: • Differential: 1 PPS to 712.5 MHz • LVCMOS: 1 PPS to 250 MHz • Meets the requirements of: • ITU-T G.8273.2 T-BC • ITU-T G.8262 (SyncE) EEC Options 1 & 2 • ITU-T G.812 Type III, IV • ITU-T G.813 Option 1 • Telcordia GR-1244, GR-253 (Stratum-3/3E) DSPLL D IN0 IN1 IN2 IN3 IN4 REF TCXO/OCXO REFb OUT6 OUT5 OUT1 OUT4 OUT3 OUT2 OUT0 XB XA 48-54 MHz XTAL OSC DSPLL C DSPLL A I2C / SPI Control NVM Status Flags Status Monitor Si5348 ÷FRAC ÷FRAC ÷FRAC ÷INT ÷INT ÷INT ÷INT ÷INT ÷INT ÷INT silabs.com | Smart. Connected. Energy-friendly. Rev. 1.0 |
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