General Description

The 9VRS4338D is a main clock for Intel Netbooks,

conforming to the CK-NET specification. It is driven with a

14.31818MHz crystal and generates a variety of clocks,

including an LCD clock. An SMBus interface allows full

control of the device.

Recommended Application

CK-NET

Output Features

• 2 - 0.8V push-pull differential CPU pairs

• 3 - 0.8V push-pull differential SRC pairs

• 1 - 0.8V push-pull differential SATA/SRC pair

• 1 - 0.8V push-pull differential DOT96/SRC pair

• 1 - 0.8V push-pull differential LCD100 pair

• 1 - 0.8V push-pull differential CPU_ITP/SRC pair

• 3 - PCI (33MHz), 1 free-running

• 1 - 25MHz _PCI (33MHz)

• 1 - USB_48MHz

• 1 - REF, 14.318MHz

Features/Benefits

• 25M output can run in power down; Supports

Wake_On_LAN

• Selectable spread on CPU, SRC, PCI; Supports

margining

• External 14.318MHz crystal; Supports tight ppm

• CLKREQ# pins; Support SRC power management

• Low power differential clock outputs; reduced power and

board space

• Integrated 33 ohm series resistors on all differential

outputs; reduced board space

Key Specifications

• CPU cycle-to-cycle jitter <85ps

• SRC/SATA cycle-to-cycle jitter <85ps

• SRC(1:4) are PCIe Gen2 compliant

• SRC5 is PCIe Gen1 compliant

• ±100ppm frequency accuracy on all clocks except 25M

• ±30ppm frequency accuracy on 25M