9VRS4339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 9VRS4339 is an Intel CK-NET compatible main clock for Intel Netbooks, conforming to the CK-NET specification. It is driven with a 25MHz crystal and generates a variety of clocks, including an LCD clock. An SMBus interface allows full control of the device.

特性 Features

• Supports Wake_On_LAN (see pin 55 pin description)
• Selectable spread % on CPU, SRC, PCI; Supports margining
• Uses external 25MHz crystal, external crystal load caps are required for frequency tuning
• CLKREQ# pins; Support SRC power management
• Low power differential clock outputs driving 100 ohm differential traces; reduced power
• Integrated 33ohm series resistors on all differential outputs; reduced board space
• CPU outputs cycle-to-cycle jitter <85ps
• SRC cycle-to-cycle jitter <85ps
• SRC meets PCIEX Gen 2 specifications
• SATA outputs cycle-to-cycle jitter <125ps
• PCI outputs cycle-to-cycle jitter <500ps
• ±100ppm frequency accuracy on all clocks