3-Dimm Clocking; Table 29. Intel Ck-815 (3-Dimm) Clocks - Intel 815 Design Manual

R
11.2

3-DIMM Clocking

Table 29 shows the characteristics of the clock generator for a 3-DIMM solution.
®
Table 29. Intel CK-815 (3-DIMM) Clocks
Number
2
13
2
1
2
3
1
The following bullets list the features of the Intel CK-815 clock generator:
Thirteen copies of SDRAM clocks
Two copies of PCI clock
One copy of APIC clock
One copy of 48 MHz USB clock (3.3V) (non-SSC) (type 3 buffer)
One copy of 48 MHz DOT clock (3.3V) (non-SSC) (see DOT details)
Three copies of 3V, 66 MHz clock (3.3V)
One copy of ref. clock @ 14.31818 MHz (3.3V)
Ref. 14.31818 MHz xtal oscillator input
Spread-spectrum support
2
I C support for turning off unused clocks
56-pin SSOP package
Figure 69 shows the Intel
®
Intel 815 Chipset Platform Design Guide
Clock Frequency
processor clocks 66/100/133 MHz
SDRAM clocks 100 MHz
PCI clocks 33 MHz
APIC clocks 33 MHz
48 MHz clocks 48 MHz
3V, 66 MHz clocks 66 MHz
REF clock 14.31818 MHz
®
815E chipset platform clock architecture for a 3-DIMM solution.
Clocking
133