9VRS4338D Datasheet, PDF (1/23 Pages) Integrated Device Technology – VERY LOW POWER CLOCK FOR 2011 NETBOOKS

VERY LOW POWER CLOCK FOR 2011 NETBOOKS
DATASHEET
9VRS4338D
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
Pin Configuration
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
48 47 46 45 44 43 42 41 40 39 38 37
X2 1
36 SRC2_LRS
X1 2
35 SRC2#_LRS
VDDREF 3
34 GNDSRC
REF0_2x/FSLC 4
33 SRC3_LRS
SDATA_3.3 5
32 SRC3#_LRS
SCLK_3.3 6
VDDPCI_3.3 7
9VRS4338D
31 PCI_STOP#_3.3
30 VDDSR C_LVIO
vITP_EN/PCI_F1_2x 8
29 SRC4_LRS
FSLB/PCI2_2x 9
28 SRC4#_LRS
CLKREQA#/PCI3_2x 10
27 SATA_LRS
GNDPCI 11
26 SATA#_LRS
GND25 12
25 GNDSATA
13 14 15 16 17 18 19 20 21 22 23 24
48-pin MLF, 6x6 mm, 0.4mm pitch
v prefix indicates internal 120KOhm pull down resistor
^ prefix indicates internal 120KOhm pull up resistor
IDT® VERY LOW POWER CLOCK FOR 2011 NETBOOKS
1
9VRS4338D
REV A 022616