W83194R-KX Datasheet, PDF (5/13 Pages) Winbond – 133MHZ 3-DIMM K7 CLOCK

W83194R-KX
5.3 I²C Control Interface
SYMBOL
PIN
*SDATA
23
*SDCLK
24
PRELIMINARY
I/O
FUNCTION
I/O Serial data of I²C 2-wire control interface with internal
pull-up resistor.
IN Serial clock of I²C 2-wire control interface with
internal pull-up resistor.
5.4 Fixed Frequency Outputs
SYMBOL
PIN
REF0 / CPU_STOP#
2
REF1 / *FS0
48
24_48MHz / *FS3
25
48MHz / *FS2
26
I/O
FUNCTION
I/O 14.318MHz reference clock. This REF output is the
stronger buffer for ISA bus loads.
Halt CPU clocks at logic 0 level, when input low (In
mobile mode. MODE=0)
I/O 14.318MHz reference clock.
Latched input for FS0 at initial power up for H/W
selecting the output frequency of CPU, SDRAM and
PCI clocks.
I/O 24MHz output clock.
Latched input for FS3 at initial power up for H/W
selecting the output frequency of CPU, SDRAM and
PCI clocks.
I/O 48MHz output for USB during normal operation.
Latched input for FS2 at initial power up for H/W
selecting the output frequency of CPU, SDRAM and
PCI clocks.
5.5 Power Pins
SYMBOL
Vddq2
Vddq3
Vss
PIN
FUNCTION
42
Power supply for CPU clocks, 2.5V or 3.3V.
1,6,14,19,27,30,36 Power supply for PCI, 24_48MHz, SDRAM[0:12], and
CPU PLL core, nominal 3.3V.
3,9,16,22,33,39,45, Circuit Ground.
47
Publication Release Date: Nov. 1999
-5-
Revision 0.35