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PRODUCT SPECIFICATION
RC7108
3
PWRDWN#
Frequency Selection
*Note:
These output frequencies are not synchronous to the CPU Clock and do not have Spread Spectrum modulation.
PWRDWN#
0
1
CPU
LOW
ON
SDRAM
LOW
ON
IOAPIC
LOW
ON
3V66
LOW
ON
PCI
LOW
ON
REF,
24MHz,
48MHz
LOW
ON
OSC.
OFF
ON
PLL
OFF
ON
FS3 FS2 FS1 FS0
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
1
1
0
1
0
1
0
1
0
1
1
1
1
1
1
1
1
CPU
MHz
100.3
100.9
105
115
120
124
133.3
133.3
140
150
66.8
70
75
83.3
90
95
SDRAM
MHz
100.3
100.9
105
115
120
124
133.3
133.3
140
150
100.2
105
112.5
124.5
90
95
PCI
MHz
33.3
33.67
35
38.33
40
41.33
44.33
33.3
35
37.5
33.4
35
37.5
41.5
30
31.67
3V66 (MHz)
IOAPIC (MHz)
FREQ_APIC
=0
16.67
16.84
17.5
19.17
20
20.67
22.17
16.67
17.5
18.75
16.67
17.5
18.75
20.75
15
15.84
3V66_SYNC
=0
66.6
67.34
70
64*
64*
64*
64*
66.6
70
64*
66.6
70
64*
64*
60
63.34
3V66_SYNC
=1
66.6
67.34
70
76.66
80
82.66
88.66
66.6
70
75
66.6
70
75
83
60
63.34
FREQ_APIC
=1
33.3
33.67
35
38.33
40
41.33
44.33
33.3
35
37.5
3.3
35
37.5
41.5
30
31.67
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1