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Part Name
Description
ICS9LPRS480 View Datasheet(PDF) - Integrated Device Technology
Part Name
Description
Manufacturer
ICS9LPRS480
Programmable System Clock Chip for ATI RS780 - K8™ based Systems
Integrated Device Technology
ICS9LPRS480 Datasheet PDF : 25 Pages
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Integrated
Circuit
Systems, Inc.
ICS9LPRS480
Table1: CPU/HTT, SRC and ATIG Frequency Selection Table
Byte 0
Byte 3
HTT
Differential
Bit0 Bit3 Bit2 Bit1 Bit0 CPU Single-ended
HTT
CPU CPU CPU CPU
SS_EN
FS3 FS2 FS1 FS0
(MHz)
SEL_HTT66 = 1 SEL_HTT66 = 0
0
0 0 0 0 173.63
57.88
86.81
0
0 0 0 1 177.17
59.06
88.58
0
0 0 1 0 180.78
60.26
90.39
0
0 0 1 1 184.47
61.49
92.24
0
0 1 0 0 188.24
62.75
94.12
0
0 1 0 1 192.08
64.03
96.04
0
0 1 1 0 196.00
65.33
98.00
0
0 1 1 1 200.00
66.67
100.00
0
1 0 0 0 204.00
68.00
102.00
0
1 0 0 1 208.08
69.36
104.04
0
1 0 1 0 212.24
70.75
106.12
0
1 0 1 1 216.49
72.16
108.24
0
1 1 0 0 220.82
73.61
110.41
0
1 1 0 1 225.23
75.08
112.62
0
1 1 1 0 229.74
76.58
114.87
0
1 1 1 1 234.33
78.11
117.17
1
0 0 0 0 173.63
57.88
86.81
1
0 0 0 1 177.17
59.06
88.58
1
0 0 1 0 180.78
60.26
90.39
1
0 0 1 1 184.47
61.49
92.24
1
0 1 0 0 188.24
62.75
94.12
1
0 1 0 1 192.08
64.03
96.04
1
0 1 1 0 196.00
65.33
98.00
1
0 1 1 1
200.00
66.67
100.00
1
1 0 0 0 204.00
68.00
102.00
1
1 0 0 1 208.08
69.36
104.04
1
1 0 1 0 212.24
70.75
106.12
1
1 0 1 1 216.49
72.16
108.24
1
1 1 0 0 220.82
73.61
110.41
1
1 1 0 1 225.23
75.08
112.62
1
1 1 1 0 229.74
76.58
114.87
1
1 1 1 1 234.33
78.11
117.17
SRC/ATIG
86.81
88.58
90.39
92.24
94.12
96.04
98.00
100.00
102.00
104.04
106.12
108.24
110.41
112.62
114.87
117.17
86.81
88.58
90.39
92.24
94.12
96.04
98.00
100.00
102.00
104.04
106.12
108.24
110.41
112.62
114.87
117.17
CPU
Spread
OverClock
%
%
Off
-0.5%
-13%
-11%
-10%
-8%
-6%
-4%
-2%
0%
2%
4%
6%
8%
10%
13%
15%
17%
-13%
-11%
-10%
-8%
-6%
-4%
-2%
0%
2%
4%
6%
8%
10%
13%
15%
17%
1391D—02/02/09
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