w83194br-b Winbond Electronics Corp America, w83194br-b Datasheet - Page 10

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

CPU, 3V66, PCI Clock Outputs, continued.
5.3
5.4
10, 11, 12,
15, 16, 17
20, 21, 22
PIN
PIN
PIN
27
28
48
34
35
6
9
I2C Control Interface
Fixed Frequency Outputs
3V66_1, 3V66_2,
PCICLK [1:6]
48MHz_DOT
48MHz_USB
CLOCK GEN. FOR INTEL P4 845 SERIES CHIPSET
PIN NAME
PCICLK7^
PIN NAME
PIN NAME
PCICLK0
SDATA*
ENWD*
3V66_3
SCLK*
REF^
FS1
FS2
FS3
&
&
&
^
IN
IN
IN
TYPE
TYPE
TYPE
OUT PCI clock output. This pin is with x1.5 ~ x2 driving strength.
OUT PCI clock outputs. This pin is with x1.5 ~ x2 driving strength.
OUT PCI clock outputs.
OUT 3.3V output clocks for the chipset.
I/OD
OUT 14.318NHz output. This pin is with x1.5 ~ x2 driving strength.
OUT 48MHz clock output for DOT.
OUT 48MHz clock output for USB.
td120k
IN
IN
td120k
td120k
Latched input for FS1 at initial power up for H/W selecting the
output frequency of CPU, 3V66 and PCI clocks. This is
internal 120K pull down.
Latched input for ENWD at initial power up for H/W enable
the watch dog timer. This is internal 120K pull up.
Serial data of I
resistor.
Serial clock of I
resistor.
Latched input for FS2 at initial power up for H/W selecting the
output frequency of CPU, 3V66 and PCI clocks. This is
internal 120K pull down.
Latched input for FS3 at initial power up for H/W selecting the
output frequency. This is internal 120K pull down.
- 6 -
W83194BR-B/W83194BG-B
2
2
C 2-wire control interface with internal pull-up
C 2-wire control interface with internal pull-up
DESCRIPTION
DESCRIPTION
DESCRIPTION