W83194BR-C Datasheet, PDF (4/13 Pages) Winbond – 200MHZ CLOCK FOR CAMINO CHIPSET

W83194BR-C
PRELIMINARY
4.3 I²C Control Interface
SYMBOL
PIN
*SDATA
34
*SDCLK
30
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.
4.4 Fixed Frequency Outputs
SYMBOL
IOAPIC[0:2]
REFX2
24_48MHz/ *SIO
PIN
46, 45, 1
2
28
48MHz/ FS0*
27
I/O
FUNCTION
O Synchronous with CPU clocks, 2.5V.
I/O 14.318MHz reference clock.
I/O 24MHz or 48MHz output clock.
Latched input for SIO at initial power up for the
output frequency of 24MHz(HIGH) and 48MHz(LOW)
clocks.
I/O 48MHz / Latched input for FS0 at initial power up
for H/W selecting the output frequency.
4.5 Power Pins
SYMBOL
VddQ2
VddQ3
Vss
PIN
FUNCTION
37,40,43,47 Power supply for CPU & IOAPIC, 2.5V
3,9,17,24,29,33 Power supply for PCI,3V66,REF2X,48MHz output,3.3V.
6,14,20,26,32,38,41, Circuit Ground.
44,48
Publication Release Date: Dec. 1999
-4-
Revision 0.40