W83194BR-KT Просмотр технического описания (PDF) - Winbond

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W83194BR-KT

STEP-LESS 3-DIMM K7 CLOCK

Winbond 

W83194BR-KT

out); *Mode1=0, PD# input

PRELIMINARY

4.3 I2C Control Interface

SYMBOL

PIN

*SDATA

23

*SDCLK

24

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

PIN

^REF0/ *FS4

2

REF1/FS2*

48

24_48MHz / *FS1

25

48MHz / *FS0

26

I/O

FUNCTION

I/O 14.318MHz reference clock.

Latched input for FS4 at initial power up for H/W

selecting the output frequency of CPU and PCI

clocks

I/O 14.318MHz reference clock.

Latched input for FS2 at initial power up for H/W

selecting the output frequency of CPU and PCI

clocks.

I/O 24MHz output clock.

Latched input for FS1 at initial power up for H/W

selecting the output frequency of CPU and PCI

clocks.

I/O 48MHz output for USB during normal operation.

Latched input for FS0 at initial power up for H/W

selecting the output frequency of CPU and PCI

clocks.

4.5 Power Pins

SYMBOL

Vddq2

Vddq3

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.

Publication Release Date: June 2000

-4-

Revision 0.43

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