MPC97H74FA

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MPC97H74FA is a versatile, low-cost clock and timing generator chip belonging to the Clock/Timing - Clock Generators, PLLs and Frequency Synthesizers category. It is designed to feed various clock requirements encountered in mobile computing and embedded design markets. The device integrates multiple PLLs and LVDS outputs to provide superior performance and cost-effective clock solutions.

MPC97H74FA is suitable for multiple applications such as mobile computing and communication equipment, storage systems, HDTV and set-top boxes, and multimedia products. It enables superior performance by combining up to five PLLs, four phase-locked-loop (PLL) outputs, and 16 LVDS outputs into a single device. It provides a standardized and cost-efficient clock solution for mobile platforms across a wide range of mobile products, from smartphones to tablets and notebooks.

MPC97H74FA features a flexible loop bandwidth control capability and a selection of capabilities, ranging from small to wide bandwidth and from low noise to low jitter. It also features on-chip spread-spectrum, PLL/VCO bypass and/or post-division modes of operation, and detects and reports to the host processor whether an LVCMOS or an LVDS input signal is present. The device also has a programmable bypass mode and a wide range of lock capabilities.

The operating principle of MPC97H74FA is based on the functionality and operation of its internal components. The device consists of five distinct PLL stages, four core PLL outputs and 16 LVDS outputs. The core PLL stages are responsible for frequency synthesis, phase synchronization and control. The four core PLL outputs are composed of two reference clock sources, one PLL output and one bypass output.

The first stage of the system is the reference clock source. This source provides the master clock frequency required to drive the rest of the device. It can be either an external reference or an internal system oscillator. The external reference is typically an LVCMOS or an LVDS source and is used to provide the timing and frequency requirements of the PLL and LVDS outputs. The internal oscillator has a much higher degree of accuracy and is used in applications that require high accuracy timing and frequency control.

The second stage is the PLL stages. The PLL stages are responsible for generating the master clock for all outputs. The phase locked loops can be programmed to achieve phase and frequency synthesis. The phase locked loops have a wide range of settings and configurations and can be used to improve noise and jitter performance. Furthermore, the PLLs are also capable of detecting and reporting to the host processor whether an LVCMOS or an LVDS input signal is present.

The third stage is the output stages. The device has four outputs, two reference clock sources, one PLL output and one bypass output. The reference clock source outputs are driven by either a 270 MHz or 540 MHz source. The PLL output is driven by the PLL stages and the bypass output is driven directly by the external reference clock. The LVDS outputs are driven by either the PLL output or the bypass output, depending on the configuration.

The fourth stage is the spread-spectrum stage. The spread-spectrum is used to reduce the power consumption of the MPC97H74FA device. It is also used to reduce the electromagnetic emissions generated by the device, which makes it suitable for applications where EMC is a concern.

The fifth stage is the programmable bypass mode. This mode is used to provide an alternative, low-latency clock path in the event of an unexpected PLL problem. The bypass mode can be used to select either the internal reference or the external reference as the clock source.

To sum it up, MPC97H74FA chips are versatile and low-cost multifunctional clock and timing generators belonging to the Clock/Timing - Clock Generators, PLLs and Frequency Synthesizers category. The device provides exceptional performance, combines five PLLs, four phase-locked-loop (PLL) outputs, and 16 LVDS outputs, and features spread-spectrum, PLL/VCO bypass and/or post-division modes of operation. The device works by synthesizing frequencies, maintaining phase synchronization and providing LVDS output, and finally, provides a programmable bypass mode and a wide range of lock capabilities.

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