cy28325-3 Cypress Semiconductor Corporation., cy28325-3 Datasheet - Page 4

• Manufacturer Part Number: cy28325-3
• Description: Ftg For Via Pentium 4 Chipsets
• Manufacturer: Cypress Semiconductor Corporation.

Document #: 38-07590 Rev. *.*
Table 1. Frequency Selection Table (continued)
Swing Select Functions
SEL4
MultSEL1
FS4
1
1
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
SEL3
FS3
0
0
1
1
1
1
1
1
1
1
MultSEL0
Input Conditions
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
SEL2
FS2
1
1
0
0
0
0
1
1
1
1
Board Target
Trace/Term Z
SEL1
FS1
1
1
0
0
1
1
0
0
1
1
50 Ohm
60 Ohm
50Ω
60Ω
50Ω
60Ω
50Ω
60Ω
50Ω
60Ω
50Ω
60Ω
50Ω
60Ω
50Ω
60Ω
SEL0
FS0
0
1
0
1
0
1
0
1
0
1
Reference R, IREF =
185.0
190.0
100.9
133.9
200.5
166.8
100.0
133.3
200.0
166.7
IREF = 5.00 mA
IREF = 5.00 mA
IREF = 5.00 mA
IREF = 5.00 mA
IREF = 5.00 mA
IREF = 5.00 mA
IREF = 5.00 mA
IREF = 2.32 mA
IREF = 2.32 mA
IREF = 2.32 mA
IREF = 2.32 mA
IREF = 2.32 mA
IREF = 2.32 mA
CPU
IREF = 2.32mA
IREF = 2.32mA
Rr = 221 1%,
Rr = 221 1%,
Rr = 221 1%,
Rr = 221 1%,
Rr = 221 1%,
Rr = 221 1%,
Rr = 221 1%,
Rr = 221 1%,
Rr = 475 1%,
Rr = 475 1%,
Rr = 475 1%,
Rr = 475 1%,
Rr = 475 1%,
Rr = 475 1%,
Rr = 475 1%,
Rr = 475 1%,
IREF = 5.00
VDD/(3*Rr)
Output Frequency
AGP
74.0
76.0
67.3
67.0
66.8
66.7
66.6
66.6
66.6
66.7
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
37.0
38.0
33.6
33.5
33.4
33.3
33.3
33.3
33.3
33.3
PCI
OH
OH
OH
OH
OH
OH
OH
OH
OH
OH
OH
OH
OH
OH
OH
OH
Current
Output
= 4*Iref
= 4*Iref
= 5*Iref
= 5*Iref
= 6*Iref
= 6*Iref
= 7*Iref
= 7*Iref
= 4*Iref
= 4*Iref
= 5*Iref
= 5*Iref
= 6*Iref
= 6*Iref
= 7*Iref
= 7*Iref
APIC
18.5
19.0
16.8
16.7
16.7
16.7
16.7
16.7
16.7
16.7
CY28325-3
1.25V @ 50
1.75V @ 50
0.47V @ 50
0.56V @ 60
0.58V @ 50
0.84V @ 60
0.81V @ 50
0.97V @ 60
1.0V @ 50
1.2V @ 60
1.5V @ 60
1.5V @ 50
1.8V @ 60
2.1V @ 60
0.7V @ 60
0.7V @ 50
V
OH
Constants
PLL Gear
Page 4 of 19
48.00741
48.00741
48.00741
48.00741
48.00741
48.00741
48.00741
48.00741
48.00741
48.00741
@ Z
(G)
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