w83193r-04 Winbond Electronics Corp America, w83193r-04 Datasheet - Page 4

• Manufacturer Part Number: w83193r-04
• Description: 83.3 Mhz 3-dimm Clock
• Manufacturer: Winbond Electronics Corp America

5.3 I
5.4 Fixed Frequency Outputs
5.5 Power Pins
SDATA
SDCLK
REF0/CPU3.3#_2.5
REF1/CPU_STOP#
24MHz / *MODE
48MHz / *FS0
V
V
V
V
V
DD
DD
DD
DD
SS
SYMBOL
q2
q2b
q3
2
C Control Interface
SYMBOL
SYMBOL
3, 9, 16, 22, 27, 33,
6, 14, 19, 30, 36
39, 45
PIN
42
PIN
PIN
48
1
23
24
46
25
26
2
I/O
I/O Serial data of I
I/O
I/O Internal 250k
I/O Internal 250 K
I/O Internal 250 K
I/O Internal 250 K
IN Serial clock of I
Power supply for Ref [0:1] crystal and core logic.
Power supply for CPUCLK[0:3], either 2.5V or 3.3V.
Power supply for IOAPIC output, either 2.5V or 3.3V.
Power supply for SDRAM, PCICLK and 48/24 MHz outputs.
Circuit Ground.
Latched input for CPU3.3#_2.5 at initial power up. Reference
clock during normal operation.
Latched high - V
Latched low - V
If MODE = 1 (default), then this pin is a REF1 buffered output
of the crystal. If MODE = 0 , then this pin is CPU_STOP#
input used in power management mode for synchronously
stopping the all CPU clocks.
Latched input for MODE at initial power up. 24 MHz output for
super I/O during normal operation.
Latched input for FS0 at initial power up for H/W selecting the
output frequency of CPU, SDRAM and PCI clocks. 48 MHz
output for USB during normal operation.
Preliminary W83193R-02/-04/-04A
- 4 -
2
C 2-wire control interface
2
pull-up.
DD
C 2-wire control interface
DD
pull-up.
pull-up.
pull-up.
q2 = V
q2 = V
DD
FUNCTION
FUNCTION
FUNCTION
DD
q2b = 3.3V
q2b = 2.5V