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PRODUCT SPECIFICATION
RC7106
9
Table 5. Byte 0: Functionality and frequency select register (Default = 0)
Note 1:
Default at power-up will be for latched logic inputs to define frequency, Bit 2, 6:4 are defaulted to 0000.
*These output frequencies are not synchronous to the CPU Clock and do not have Spread Spectrum modulation.
Absolute Maximum Ratings
Stresses greater than those listed in this table may cause permanent damage to the device. These represent a stress rating only.
Operation of the device at these or any other conditions above those specified in the operating sections of this specification is
not implied. Maximum conditions for extended periods may affect reliability.
Bit
Bit 7
Description
Default
0
0-
±
0.25% Center Spread Spectrum
1- Down Spread Spectrum 0 to
Bit
(2, 6:4)
Bit(2,6:4)
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
0- frequency is selected by hardware select, latched inputs
1- Frequency is selected by Bit 2,6:4
0- Normal
1- Spread Spectrum
0- Enabled
1- Tristate all outputs
CPU
105
75
100.3
66.8
110
115
117
120
125
127
133.3
135
137
140
145
150
PCI
35
37.5
33.4
33.4
36.6
38.3
39
40
41.6
42.3
33.3
33.75
34.25
35
36.25
37.5
3V66
IOAPIC
Note 1
3V66_SEL
=0
70
64*
66.6
66.6
64*
64*
64*
64*
64*
64*
66.6
67.5
68.5
70
64*
64*
3V66_SEL
=1
70
75
66.6
66.6
73.3
76.6
78
80
83.3
84.6
66.6
67.5
68.5
70
72.5
75
FREQ_APIC
=0
17.5
18.75
16.7
16.67
18.3
19.16
19.5
20
20.8
21.16
16.6
16.8
17.125
17.5
18.125
18.75
FREQ_APIC
=1
35
37.5
33.4
33.4
36.6
38.3
39
40
41.6
42.3
33.3
33.75
34.25
35
36.25
37.5
Bit 3
0
Bit 1
0
Bit 0
0
Symbol
V
DD
, V
IN
T
STG
T
B
T
A
ESD
PROT
Parameter
Ratings
-0.5 to +7.0
-65 to +150
-55 to +125
0 to +70
2 (min)
Units
V
o
C
o
C
o
C
kV
Voltage on any pin with respect to V
SS
Storage Temperature
Ambient Temperature
Operating Temperature
Input ESD Protection