9FGV0831数据手册集成电路（IC）的应用特定时钟/定时规格书PDF

描述 Description

The 9FGV0831 is an 8-output very low power clock generator for PCIe Gen1–4 applications. The device has 8 output enables for clock management and supports 2 different spread spectrum levels in addition to spread off.

特性 Features

• PCIe Gen1–4 compliant
• 1.8 V operation: reduced power consumption
• Outputs can optionally be supplied from any voltage between 1.05 and 1.8 V: maximum power savings
• OE# pins: support DIF power management
• LP-HCSL differential clock outputs: reduced power and board space
• Programmable slew rate for each output: allows tuning for various line lengths
• Programmable output amplitude: allows tuning for various application environments
• DIF outputs blocked until PLL is locked: clean system start-up
• Selectable 0%, -0.25% or -0.5% spread on DIF outputs: reduces EMI
• External 25 MHz crystal; supports tight ppm with 0 ppm synthesis error
• Configuration can be accomplished with strapping pins: SMBus interface not required for device control
• 3.3 V tolerant SMBus interface works with legacy controllers
• Space-saving 6x6 mm 48-pin VFQFPN; minimal board space
• Selectable SMBus addresses: multiple devices can easily share an SMBus segment