w83194br-619 Winbond Electronics Corp America, w83194br-619 Datasheet - Page 10

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

5.5
5.6
6,11,18,24,29,38,44,47
PIN
46
45
34
Output Control Pins
Power an GND Pins
10,17
CLOCK GEN. FOR INTEL P4 SPRINGDALE/PRESCOTT SERIES CHIPSET
PIN
25
28
35
41
48
3
IREF
RESET#
VTT_PWRGD
PD#*
PIN NAME
PIN NAME
VDD3V66
VDDCPU
VDDREF
VDDPCI
VDD48
VDDA
TYPE
OUT
GND
VDD
OD
IN
IN
Deciding the reference current for the CPUCLK pairs. The pin
was connected to the precision resistor tied to ground to decide
the appropriate current. The table is show as follows.
System reset signal when the watchdog is time out. This pin will
generate 250mS when the watchdog timer is timeout.
Power good input signal comes from ACPI with high active. This
3.3V input is level sensitive strobe used to determine FS [4:0]
input are valid and is ready to sample. This pin is high active.
Power Down Function. This is internal 120KΩ pull up. This is
multi-function pin. When the VTT_PWRGD signal is asserted
(this is, turns from a logical Low to high), the pin will be switched
into the function of power down (PD#).
50 Ohms
Board Target
PWR
PWR
PWR
PWR
PWR
PWR
PWR
PWR
TYPE
Trace
W83194BR-619/W83194BG-619
3.3V power supply for REF.
3.3V power supply for PCI.
3.3V power supply for 48MHz.
3.3V power supply for 3V66.
3.3V power supply.
3.3V power supply for CPU.
3.3V power supply analog core.
Ground pin
- 6 -
R=475
Iref=2.32mA
Reference R,
Iref
DESCRIPTION
DESCRIPTION
Ioh=6*Iref
Current
Output
0.7V @ 50
Ioh @ Z