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www.fairchildsemi.com
Features
Employs Fairchild’s proprietary Spread Spectrum
Technology
Reduces measured EMI by as much as 10dB
Supports up to 150MHz
¥
I
2
C programmable
Three skew-controlled copies of the CPU clock
One copy CPU/2 @ 3.3V
Three copies of 3V66 clock
One copy 24MHz or 48MHz clock
One copy 48MHz clock
Three copies IOAPIC
Two copies REF 14.318MHz clock (3.3V)
Eleven copies PCI clock
Power down capability
Description
The RC7106 is a clock synthesizer for motherboard applica-
tions. It meets the requirements for 133MHz Camino
chipset. The clock frequencies can be set with the 4 select
pins or be set via the I
2
C interface.
Block Diagram
IOAPIC0:2
C
O
N
T
R
O
L
CPU/2
CPU0:3
3V66_0:2
PCI4:10
FS0/PCI_F
SEL24_48#/REF1
PLL
Spread
Spectrum
PLL USB
I2C
OSC
REF0
X1
X2
SDATA
SCLK
PWRDWN#
FS1:3/PCI1:3
48MHz/SEL_3V66
24_48MHz/FREQ_APIC
RC7106
133MHz S pread S pec trum Cloc k for Motherboards