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Renesas Electronics Corporation

Renesas’ Timing product portfolio has been acquired by SiTime.

Datasheets, documentation, and sample orders remain available on Renesas.com through late 2026. For new designs, purchasing, support, and product inquiries, visit SiTime.com or send an email to [email protected]. Full transition to SiTime is expected by late 2026.

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

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.

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