CY24292LFXI

Application Specific Clock/Timing Overview

The CY24292LFXI is a four-output PCI-Express clock generator manufactured by Cypress Semiconductor. It accepts a 25 MHz crystal or clock input and synthesizes four differential 100 MHz outputs with HCSL-compatible levels, alongside one single-ended 25 MHz LVCMOS output. The device integrates spread spectrum modulation on all 100 MHz outputs to reduce EMI, utilizing a Lexmark profile. Configuration is managed via an SMBus interface with read-back capability. It operates on a 3.0 V to 3.6 V supply within the -40°C to 85°C industrial temperature range.

Application Specific Clock/Timing Feature Summary

• Four differential 100 MHz PCI-Express outputs with HCSL compatibility
• One single-ended 25 MHz LVCMOS output
• Spread spectrum modulation on all 100 MHz outputs for EMI reduction
• SMBus serial interface for configuration and register read-back

Application Specific Clock/Timing Applications

• PCI-Express system clock generation
• High-speed digital circuit timing distribution
• EMI-sensitive electronic designs requiring spread spectrum clocks

Application Specific Clock/Timing Procurement Notes

Verify the suffix 'I' confirms the Industrial temperature range (-40°C to 85°C). Confirm the package type is the 32-pin QFN (5x5 mm) with exposed pad. Ensure the ordering code matches the specific tape-and-reel or tube requirement if applicable, though the base part number indicates standard packaging.

Application Specific Clock/Timing Selection Notes

Select this component when designing PCI-Express interfaces requiring four differential 100 MHz clocks and one 25 MHz reference. Ensure the design supports a 25 MHz parallel resonance crystal input. Verify that the PCB layout accommodates the 32-QFN package dimensions and provides adequate thermal dissipation for the exposed pad.

Application Specific Clock/Timing Part Context

This part belongs to the CY24292 family of clock generators. The 'L' denotes the 32-pin QFN package, 'F' indicates field programmability, and 'I' specifies the industrial temperature grade. Related variants include the commercial grade CY24292LFXC and tape-and-reel versions ending in 'T'.

Application Specific Clock/Timing Replacement Considerations

Direct replacements within the same package and pinout include the CY24292LFXC for commercial temperature applications. For tape-and-reel packaging requirements, consider the CY24292LFXIT variant. Cross-family substitution requires verification of electrical parameters and pin compatibility.