w83194br-655 Winbond Electronics Corp America, w83194br-655 Datasheet - Page 10

• Manufacturer Part Number: w83194br-655
• Description: Clock For Sis Chipsets Winbond Clock Generator
• Manufacturer: Winbond Electronics Corp America

5.5
5.6
5.7
1
13,19
29
42
28
11
48
36
5,8,18,23,24,32,
37,41,45
PIN
BOARD TARGET
33
38
TRACE/TERM Z
4
Power Management Pins
IREF selects Function
Power Pins
PIN
50 Ω
50 Ω
VTT_PWRGD
PD#*
RESET#
CPU_STOP#*
IREF
VDDREF
VDDPCI
VDDAGP
VDDCPU
VDD48
VDDZ
VDDSRC
VDDA
GND
PIN NAME
PIN NAME
REFERENCE R, IREF =
IN
IN
TYPE
OUT
OUT
IN
tp120k
tp120k
PWR
PWR
PWR
PWR
PWR
PWR
PWR
PWR
PWR
IREF = 5.00mA
IREF = 2.32mA
Rr =221 1%
Rr =475 1%
ADD/(3*RR)
TYPE
Power good input signal is power on trapping with HIGH
active. This 3.3V input is level sensitive strobe used to
determine FS [4:0]. This pin is HIGH active.
Power Down Function. This is power down pin, low active
(PD#).
Internal 120K pull up
System reset signal when the watchdog is time out. This pin
will generate 250ms low phase when the watchdog timer is
timeout. Selected by MODE latch input =0.
Active low, Stop all CPU clock outputs. Select by power up
latched MODE#=1, internal 120KΩ pull-up resistor.
Deciding the reference current for the CPU CLOCK pairs.
The pin was connected to the precision resistor tied to
ground to decide the appropriate current.
W83194BR-655/W83194BG-655
3.3V power supply for REF.
3.3V power supply for PCI.
3.3V power supply for AGP.
3.3V power supply for CPU.
3.3V power supply for 48MHz.
3.3V power supply for ZCLK.
3.3V power supply for SRC
3.3V power supply for Analog core logic.
Ground pin
- 6 -
Ioh=4*IREF
Ioh=6*IREF
DESCRIPTION
CURRENT
OUTPUT
DESCRIPTION
1.0V @ 50
0.7V @ 50
VOH @ Z