w83194br-sd Winbond Electronics Corp America, w83194br-sd Datasheet - Page 9

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

5.5
5.6
29, 38, 44, 47
7, 12, 18, 24,
PIN
46
45
34
11, 17
PIN
Output Control Pins
Power an GND Pins
25
28
35
41
48
4
IREF
VTT_PWRGD
CLOCK GEN. FOR INTEL P4 SPRINGDALE/PRESCOTT SERIES CHIPSET
PIN NAME
RESET#
PD#*
PIN NAME
VDD3V66
VDDCPU
VDDREF
VDDPCI
VDD48
VDDA
GND
VDD
TYPE
OD
IN
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 250 mS 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#).
TYPE
PWR
PWR
PWR
PWR
PWR
PWR
PWR
PWR
Board Target Trace
50 Ohms
3.3V power supply for REF.
3.3V power supply for PCI.
3.3V power supply for 48 MHz.
3.3V power supply for 3V66.
3.3V power supply.
3.3V power supply for CPU.
3.3V power supply analog core.
Ground pin for 3.3 V
W83194BR-SD/W83194BG-SD
- 5 -
Reference R, Iref
R = 475 Iref =
DESCRIPTION
2.32mA
Publication Release Date: March, 22, 2006
DESCRIPTION
Output Current
Ioh = 6*Iref
Revision 1.2
0.7V @ 50
Ioh @ Z