w83194br-372 Winbond Electronics Corp America, w83194br-372 Datasheet - Page 7

• Manufacturer Part Number: w83194br-372
• Description: Clock Generator For Sis 746/748 Chipsets
• Manufacturer: Winbond Electronics Corp America

5.3 Fixed Frequency Outputs
5.4 I
5.5 Power Management Pins
5.6 Power Pins
5, 8, 18, 24, 25,
32, 37, 41, 45
PIN
PIN
PIN
27
26
34
35
33
12
44
2
3
4
2
13,19
38,42
C Control Interface
PIN
29
28
11
48
36
1
CPU_STOP#* IN
PCI_STOP#*
24_48MHz
PIN NAME
PIN NAME
PIN NAME
SDATA*
48MHz
SCLK*
REF0
REF1
REF2
FS0
FS1
PD#*
&
&
PIN NAME
VDDAGP
VDDCPU
VDDREF
VDDPCI
VDD48
VDDZ
VDDA
VDDI
GND
IN
IN
IN
IN
TYPE
TYPE
TYPE
OUT
OUT
OUT
OUT
OUT
I/OD
td120k
td120k
IN
tp120k
tp120k
tp120k
TYPE
PWR
PWR
PWR
PWR
PWR
PWR
PWR
PWR
PWR
14.318MHz output.
14.318MHz output.
14.318MHz output.
48MHz clock output for USB.
Latched input for FS0 at initial power up for H/W selecting the
output frequency. This is internal 120K pull down.
Latched input for FS1 at initial power up for H/W selecting the
output frequency. This is internal 120K pull down.
24MHz (default) or 48MHz clock output, it could be R/W by I2C
control after power on reset period. Select by register 5 bit 7.
Serial data of I
resistor.
Serial clock of I
resistor.
Power Down Function. This is power down pin, low active (PD#).
Internal 120K pull up
Active low, Stop all PCI clock output besides the free running
clocks.
Active low, Stop all CPU clock outputs.
3.3V power supply for REF.
3.3V power supply for PCI.
3.3V power supply for AGP.
2.5V power supply for CPU.
3.3V power supply for 48MHz.
3.3V power supply for ZCLK.
2.5V power supply for IOAPIC
3.3V power supply for Analog core logic.
Ground pin
- 4 -
2
C 2-wire control interface with internal pull-up
2
C 2-wire control interface with internal pull-up
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
W83194BR-372