w83193r-04 Winbond Electronics Corp America, w83193r-04 Datasheet - Page 5

• Manufacturer Part Number: w83193r-04
• Description: 83.3 Mhz 3-dimm Clock
• Manufacturer: Winbond Electronics Corp America

6.0 FREQUENCY SELECTION
W83193R-02/-04 Frequency Table
W83193R-04A Frequency Table
7.0 CPU 3.3#_2.5 BUFFER SELECTION
8.0 FUNCTIONAL DESCRIPTION
8.1 Power Management Functions
All clocks can be individually enabled or disabled via the 2-wire control interface. On power up,
external circuitry should allow 3 ms for the VCO to stabilize prior to enabling clock outputs to assure
correct pulse widths. When MODE = 0, pins 15 and 46 are inputs (PCI_STOP#), (CPU_STOP#),
when MODE = 1, these functions are not available. A particular clock could be enabled as both the 2-
wire serial control interface and one of these pins indicate that it should be enable.
FS2
FS2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
CPU 3.3#_2.5 (PIN 2) INPUT LEVEL
FS1
FS1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
1
0
FS0
FS0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
CPU, SDRAM (MHz)
CPU, SDRAM (MHz)
Preliminary W83193R-02/-04/-04A
83.3
68.5
66.8
83.3
68.5
83.3
66.8
100
112
50
90
75
50
75
75
60
- 5 -
CPU & IOAPIC OPERATE AT
PCI (MHz)
PCI (MHz)
41.65
34.25
41.65
34.25
37.5
33.4
33.3
37.5
33.4
25
50
45
56
Publication Release Date: April 1999
25
32
30
V
V
DD
DD
= 2.5V
= 3.3V
REF, IOAPIC (MHz)
REF, IOAPIC (MHz)
14.318
14.318
14.318
14.318
14.318
14.318
14.318
14.318
14.318
14.318
14.318
14.318
14.318
14.318
14.318
14.318
Revision A1