w83194br-b Winbond Electronics Corp America, w83194br-b Datasheet - Page 18

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

7.13 Register 12: Winbond Chip ID Register (Read Only)
7.14 Register 13: SEL24_48 and FIX_3V66_PCI Control
BIT
BIT
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
CPU_PCI_SKEW [2]
CPU_PCI_SKEW [1]
CPU_PCI_SKEW [0]
MAS_VER_ID[1]
MAS_VER_ID[1]
SUB_VER_ID[1]
SUB_VER_ID[1]
FIX_3V66_PCI
MAS_ID[1]
MAS_ID[0]
SUB_ID[1]
SUB_ID[0]
SEL24_48
Iref_test0
SEL [1]
SEL [0]
NAME
NAME
CLOCK GEN. FOR INTEL P4 845 SERIES CHIPSET
PWD
PWD
1
0
0
1
0
1
0
1
0
0
0
0
0
1
0
0
Winbond Master-Chip ID.
Winbond Master-Chip ID.
Winbond Sub-Chip ID.
Winbond Sub-Chip ID.
Winbond Master’s Version ID.
Winbond Master’s Version ID.
Winbond Sub’s Version ID.
Winbond Sub’s Version ID.
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
- 14 -
W83194BR-B/W83194BG-B
SEL [1]
0
1
0
1
DESCRIPTION
DESCRIPTION
3V66
72MHz
64MHz
76.8MHz
67.2MHz
PCI
36MHz
32MHz
38.4MHz
33.6MHz