W83194R-630 WINBOND [Winbond], W83194R-630 Datasheet - Page 6

• Manufacturer Part Number: W83194R-630
• Description: 166MHZ CLOCK FOR SIS CHIPSET
• Manufacturer: WINBOND [Winbond]

5.3
5.4 Fixed Frequency Outputs
5.5 Power Pins
Vdd
VddLCPU
VddP
VddSD
Vss
REF0X2 / *FS3
48MHz / *FS0
SEL2.5_3.3#
24_48MHz/
I
SYMBOL
SYMBOL
SYMBOL
*SDATA
*SDCLK
2
C Control Interface
REF1
1
6,15
19,27,30,36,42
3,10,16,22,33,39,44 Circuit Ground.
47
PIN
PIN
23
24
48
25
26
2
PIN
I/O
I/O
I/O
I/O
I/O
I/O
I/O
IN
Power supply for REF crystal and core logic.
Power supply for CPUCLK_F and CPUCLK[0:1], either
2.5V or 3.3V.
Power supply for PCI outputs.
Power supply for SDRAM and 48/24NHz outputs.
- 6 -
Serial data of I
Serial clock of I
3.3V, 14.318MHz reference clock output .
Internal 250k 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 250k 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
W83194R-630/-630A
FUNCTION
FUNCTION
FUNCTION