PI6C557-05LE

Ratio - Input:Output:	1:4
Base Part Number:	PI6C557
Supplier Device Package:	20-TSSOP
Package / Case:	20-TSSOP (0.173", 4.40mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply:	3.135 V ~ 3.465 V
Frequency - Max:	200MHz
Differential - Input:Output:	No/Yes
Series:	--
Number of Circuits:	1
Output:	HCSL, LVDS
Input:	HCSL, Crystal
Main Purpose:	Ethernet, PCI Express (PCIe)
PLL:	Yes
Part Status:	Active
Packaging:	Tube

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PI6C557-05LE Application Field and Working PrincipleThe PI6C557-05LE is a clock/timing chip designed for specific applications. It is part of the Precision Integrated Circuits family and fulfills its purpose in a particular niche. The PI6C557-05LE was designed to allow its users to harness high-precision timing of events and clock synchronization between devices. The device is highly favored in scenarios where low power consumption, high accuracy, and regular clock periods are necessary, such as digital audio playback systems and home theater setups.The PI6C557-05LE achieves its precision and accuracy by including a multitude of circuit elements, such as oscillators, timers, filters, and regulators. That is not to say that the device is complex to use, however – instead, the complexity is contained within the chip, allowing for intuitive and rapid usage.The oscillator is the primary clock source, naturally. It is a quartz-crystal-based oscillator, which is accurate to within ±20 ppm over temperatures of -40°C to +85°C. The oscillator can be adjusted in frequency per the PI6C557-05LE chip itself (it does not require external components to be used in order to adjust the frequency adjustment) and can generate clock signals at frequencies up to 60 MHz. The frequency accuracy is further improved by the onboard regulators and temperature compensation structures.The frequency of the clock output is established by the configuration of the timers. There are two 16-bit counter/timers as well as one 8-bit counter/timer, depending on the preferences of the user. Each of the counters is programmable, allowing for the precise frequency adjustment of the clock signals by the user.The PI6C557-05LE further provides the use of interrupts. With their inclusion, the PI6C557-05LE allows for the synchronization of multiple devices by having precise timing of events and communication. The interrupt structure is provided as needed – users can choose which interrupt lines are enabled and which are disabled.The filter is an essential part of the chip, as it enables a low-power operation mode through the reduction of the faster frequency clock output. The chip has a filter for each of the three clock outputs. Each filter has its own cutoff frequency, which can be adjusted through the firmware provided in the chip.Last but not least, the PI6C557-05LE also provides a power control system. The system allows for an automatic switching from standby mode to active mode when clock signals are present, and vice versa when they are not. This helps to lower power consumption.The PI6C557-05LE is a powerful device that provides clock synchronization, precise timing of events, and low-power operation through the implementation of several clock elements, timers, and filters, as well as its own power control system. Through these and its other features, this chip is quickly becoming the chip for applications requiring high precision timing.

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