W83194R Winbond Electronics Corp America, W83194R Datasheet - Page 5

• Manufacturer Part Number: W83194R
• Description: Description = 166MHz SiS540/630 Clock Gen., 3-DIMM, With S.S.T. ;; Package = Ssop 48
• Manufacturer: Winbond Electronics Corp America

PCICLK 1/ *FS2
PCICLK 2/ *MODE
PCICLK [ 3:6 ]
5.3 I
*SDATA
*SDCLK
5.4 Fixed Frequency Outputs
REF0X2 / *FS3
REF1
24_48MHz/
SEL2.5_3.3#
48MHz / *FS0
2
C Control Interface
SYMBOL
SYMBOL
11,12,13,14
PIN
PIN
23
24
48
25
26
8
9
2
OUT
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
IN
- 5 -
PCI free-running clock during normal operation.
Latched input for FS2 at initial power up for H/W
selecting the output frequency of CPU, SDRAM and
PCI clocks.
PCI clock during normal operation.
Latched input for MODE at initial power up for input
selection of CPU_STOP#, PCI_STOP# and PD#.
When MODE=1, the above pins are SDRAM clock
outputs. When MODE=0, the pins are inputs ACPI
pins.
PCI clock during normal operation.
Low skew (< 250ps) PCI clock outputs.
Serial data of I
Serial clock of I
3.3V, 14.318MHz reference clock output .
Internal 250kΩ pull-up.
Latched input for FS3 at initial power up for H/W
selecting the output frequency of CPU, SDRAM and
PCI clocks.
3.3V , 14.318MHz reference clock output.
SEL2.5_3.3# controls the Vdd of CPU. If logic 0 at
power on, VddLCPU=3.3V. If logic 1, VddLCPU=2.5
24MHz or 48MHz selected by I2C for Super I/O.
Internal 250kΩ pull-up.
Latched input for FS0 at initial power up for H/W
selecting the output frequency of CPU, SDRAM and
PCI clocks. 48MHz output for USB during normal
operation.
2
2
C 2-wire control interface
C 2-wire control interface
Publication Release Date:May. 2000
FUNCTION
FUNCTION
W83194R-630A
Revision 1.0