w83194br-619 Winbond Electronics Corp America, w83194br-619 Datasheet - Page 17

• Manufacturer Part Number: w83194br-619
• Description: Winbond Clock Generator For Intel P4 Springdale Series Chipset P4 Springdale Series Chipset
• Manufacturer: Winbond Electronics Corp America

7.13 Register 11: Spread Spectrum Programming Register (Default =1FH)
7.14 Register 12: Divider Ratio Register (Default =C6H)
7.15 Table-2 CPU, SRC, AGP divider ratio selection Table
BIT
BIT
7
6
5
4
3
2
1
0
Bit1/
Bit3/
Bit6
7
6
5
4
3
2
1
0
MSB
SP_DOWN [3]
SP_DOWN [2]
SP_DOWN [1]
SP_DOWN [0]
LSB
CLOCK GEN. FOR INTEL P4 SPRINGDALE/PRESCOTT SERIES CHIPSET
SP_UP [3]
SP_UP [2]
SP_UP [1]
SP_UP [0]
SRC_H
NAME
NAME
DS9
DS5
DS4
DS3
DS2
DS1
DS0
0
1
Div2
Div4
0
PWD
PWD
CPU
1
1
0
0
0
1
1
0
Bit0
0
0
0
1
1
1
1
1
SRC frequency select, 1: 100MHz, 0: 200MHz
Define the AGP divider ratio,
Table-2 integrate the all divider configuration
Define the AGP divider ratio
Table-2 integrate the all divider configuration
Define the SRC divider ratio
Refer to Table-2
Define the
Refer to Table-2
Spread Spectrum Up Counter bit 3 ~ bit 0.
Spread Spectrum Down Counter bit 3 ~ bit 0
2’s complement representation.
Ex: 1 -> 1111; 2 -> 1110; 7 -> 1001; 8 -> 1000
Div3
Div5
1
CPU
Div2
Div4
0
W83194BR-619/W83194BG-619
divider ratio
SRC
Bit2
- 13 -
Div3
Div5
1
DESCRIPTION
DESCRIPTION
Div10
Div5
00
Publication Release Date: March, 2006
Div12
Div6
01
Bit5, 4
AGP
Div12
Div7
10
Revision 0.7
Div12
Div8
11