w83194br-39b Winbond Electronics Corp America, w83194br-39b Datasheet - Page 4

• Manufacturer Part Number: w83194br-39b
• Description: Step-less 3-dimm Clock
• Manufacturer: Winbond Electronics Corp America

4.3 I
SDATA*
SDCLK*
4.4 Fixed Frequency Outputs
REF0^ / PD#
REF1 / FS2*
24MHz / FS1*
48MHz / FS0*
4.5 Power Pins
Vddq1
VddL1
VddL2
Vddq2
Vddq3
Vddq4
Vss
2
C Control Interface
SYMBOL
SYMBOL
SYMBOL
3,9,16,22,33,39,45 Circuit Ground.
PIN
PIN
19, 30, 36
23
24
46
25
26
2
6, 14
PIN
48
27
42
1
I/O
I/O
I/O
I/O
I/O
I/O
I/O
IN
- 4 -
Power supply for Ref [0:1] crystal and core logic.
Power supply for IOAPIC output, either 2.5V or 3.3V.
Power supply for CPUCLK[0:3], either 2.5V or 3.3V.
Power supply for PCICLK_F, PCICLK[0:4], 3.3V.
Power supply for SDRAM[0:12], and CPU PLL core,
nominal 3.3V.
Power for 24 & 48MHz output buffers and fixed PLL
core.
Serial data of I
Serial clock of I
14.318MHz reference clock. This REF output is the
stronger buffer for ISA bus loads.(pin7 *Mode0=1)
Halt all clocks at logic 0 level, when input low (pin7
*Mode0=0)
14.318MHz reference clock.
Latched input for FS2 at initial power up for H/W
selecting the output frequency of CPU, SDRAM and
PCI clocks.
24MHz output clock.
Latched input for FS1 at initial power up for H/W
selecting the output frequency of CPU, SDRAM and
PCI clocks.
48MHz output for USB during normal operation.
Latched input for FS0 at initial power up for H/W
selecting the output frequency of CPU, SDRAM and
PCI clocks.
2
C 2-wire control interface
2
C 2-wire control interface
Publication Release Date: June 2000
FUNCTION
FUNCTION
FUNCTION
W83194BR-39B
PRELIMINARY
Revision 0.46