SILICON LABS SI52143-A01AGMR

The Si52143 is a spread-spectrum enabled PCIe clock generator that can source four PCIe clocks and a 25 MHz reference clock. The device has three hardware output enable pins for enabling the outputs (on the fly while powered on), and one hardware pin to control spread spectrum on PCIe clock outputs. In addition to the hardware control pins, I2C programmability is also available to dynamically control skew, edge rate and amplitude on the true, compliment, or both differential signals on the PCIe clock outputs. This control feature enables optimal signal integrity as well as optimal EMI signature on the PCIe clock outputs.

• PCI-Express Gen 1, Gen 2, Gen 3, and Gen 4 common clock compliant
• Gen 3 SRNS Compliant
• Supports Serial ATA (SATA) at 100 MHz
• Low power, push-pull HCSL compatible differential outputs
• No termination resistors required
• Dedicated output enable hardware pins for each clock output
• Spread enable pin on differential clocks
• Four PCI-Express clocks
• 25 MHz reference clock output
• 25 MHz crystal input or clock input
• Signal integrity tuning I2C support with readback capabilities
• Triangular spread spectrum profile for maximum electromagnetic interference (EMI) reduction
• Industrial temperature –40 to 85°C
• 3.3V power supply
• 24-pin QFN package

• Network attached storage
• Multi-function printer