w83194br-b Winbond Electronics Corp America, w83194br-b Datasheet - Page 28

• Manufacturer Part Number: w83194br-b
• Description: Winbond Clock Generator For Intel P4 845 Series Chipset
• Manufacturer: Winbond Electronics Corp America

VERSION CHANGE NOTICE 1
1. DESCRIPTION:
This B revision includes:
Difference in Frequency Table
FS4 FS3 FS2 FS1 FS0
0
0
0
0
1
1
1
1
1. This version change notice is for W83194BR-B to be changed from A version to B version. It
2. For customers who use A version , the major difference between A version and B version is
3. The Version A M/N/Ratio register has default value; Version B M/N/Ratio register is frequency
is only for customers who use A version. If you have never used A version, you can skip the
following contents.
chip ID and part of frequency table. B version can almost replace A version without any
change.
1. New Feature supports AGP/PCI clock out in fix mode with 4 step option, and slew rate
2. Skew control between CPU with PCI.
3. Pin name of Pin 5,6 ( PCICLK_F1, PCICLK_F2 ) are changed to PCICLK7, PCICLK8.
4. Modify 8 sets FS[0:4] in frequency table to support new CPU frequency table
table mirror value.
0
0
0
1
0
0
0
1
control with CPU,AGP,PCI,REF,48MHZ.
0
0
1
1
0
0
1
1
CLOCK GEN. FOR INTEL P4 845 SERIES CHIPSET
0
1
1
1
0
0
1
1
1
0
0
0
0
1
0
0
(MHZ)
100.0
101.1
100.0
133.3
134.7
133.3
199.9
166.9
CPU
(M HZ)
3V66
66.6
67.4
66.6
66.6
67.4
66.6
66.6
66.7
VERSION B
( MHZ)
- 24 -
33.3 +/-0.25%
33.7 +/-0.25%
33.3 +/-0.25%
33.3 +/-0.25%
33.7 +/-0.25%
33.3 +/-0.25%
33.3 +/-0.25%
33.4 +/-0.25%
PCI
W83194BR-B/W83194BG-B
SPREAD %
133.33
(MHZ)
100.3
133.9
66.67
CPU
103
111
180
139
(M HZ)
66.87
68.67
66.95
66.67
66.67
3V66
69.5
VERSION A
74
60
(MHZ)
33.43
34.33 +/-0.25%
33.48 +/-0.25%
33.33
34.75 +/-0.25%
33.34 +/-0.25%
PCI
37
30
SPREAD %
+/-0.25%
+/-0.25%
-0.50%
-0.50%