SI5338M-B04513-GMR

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The SI5338M-B04513-GMR is a mixed-signal IC clock generator designed for digital PLL frequency synthesis within the IEEE 1588 Ethernet Powerlink protocol. It provides digital capacitors, voltage-controlled oscillators (VCOs) and adjustable frequency output dividers, enabling a variety of different clock signals. Its digital synthesis system is highly accurate and stable, with low noise and jitter.
    
The SI5338M-B04513-GMR provides a full range of capabilities that allow it to be used as a clock source for high-speed digital signal processors (DSPs) and ASICs. It also supports other clock protocol standards such as I2C, SPI, USB, LPC, and OCXO. It is also used in networking applications such as SONET/SDH, packet over SONET/SDH, synchronous Ethernet, PCS, and carrier Ethernet.
    
Application Field
    
The SI5338M-B04513-GMR is used in high bandwidth networking systems such as Ethernet, Fibre Channel, SONET/SDH, and WLAN. It provides adjustable frequency outputs for clocking of FPGAs, ASICs, DSPs, and microcontrollers, as well as for control signals in communications instruments. It is also used for PTP IEEE 1588 grandmaster clocks, as well as for clock synchronization in general communication systems.
    
The advanced frequency synthesis system of the SI5338M-B04513-GMR allows it to generate programmable and customizable frequencies from a single XO clock input. This makes it ideal for protocols such as IEEE 1588, which require support for multiple frequencies and phase-locked-loops (PLLs). The low jitter output frequency of the SI5338M-B04513-GMR also makes it ideal for use in system architectures that require tight jitter control.
    
Working Principle
    
The SI5338M-B04513-GMR uses a highly-accurate digital PLL frequency synthesis system to generate programmable frequency output signals. This system consists of a Phase Frequency Detector (PFD), a Voltage Controlled Oscillator (VCO), an adjustable frequency generator for frequency division, and two digital Programmable Logic Arrays (PLA) for encoding, modulation, and drive output gain control. The digital PLL uses the voltage controlled oscillator (VCO) to generate the stable clock signals and provides programmable frequency dividers for adjustable frequency outputs.
    
The SI5338M-B04513-GMR supports multiple clock protocols, including I2C and SPI, as well as USB, LPC, and OCXO. It offers adjustable frequency accuracy of up to ±100 ppm, low jitter of less than 10 ps, and fast lock times of 100 nsec or less. All of these features provide great flexibility and performance for high-speed communications applications.
  

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