w83194br-b Winbond Electronics Corp America, w83194br-b Datasheet - Page 30

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

1.2
BIT
7
6
5
4
3
2
1
0
Register 13: SEL24_48 and FIX_3V66_PCI Control
CPU_PCI_SKEW [2]
CPU_PCI_SKEW [1]
CPU_PCI_SKEW [0]
FIX_3V66_PCI
SEL24_48
Iref_test0
SEL [1]
SEL [0]
NAME
CLOCK GEN. FOR INTEL P4 845 SERIES CHIPSET
PWD
0
0
0
0
0
1
0
0
Pin 34, 48MHz_DOT output frequency select bit
SEL24_48=0, 48MHz_DOT=48MHz(Default)
SEL24_48=1, 48MHz_DOT=24MHz
Control CPU_I/O Buffer Bias Current
0: normal mode, 1: fix mode
3V66 & PCI FIX frequency (PCI=3V66/2)
SEL [1:0] for 3V66, PCI, When bit 5 set 1 these bit had
function
CPU to PCI skew
SEL [0]
0
0
1
1
- 26 -
W83194BR-B/W83194BG-B
0
1
0
1
SEL [1]
DESCRIPTION
3V66
72MHz
64MHz
76.8MHz
67.2MHz
PCI
36MHz
32MHz
38.4MHz
33.6MHz