W83194BG-703 datasheet(8/28 Pages) WINBOND

Part #	W83194BG-703

Description	STEPLESS CLOCK FOR SIS 741 CHIPSET

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Manufacturer	WINBOND [Winbond]

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W83194BR-703/W83194BG-703

-4-

5. PIN DESCRIPTION

BUFFER TYPE SYMBOL

DESCRIPTION

IN

Input

INtp120k

Latched input at power up, internal 120kΩ pull up.

INtd120k

Latched input at power up, internal 120kΩ pull down.

OUT

Output

OD

Open Drain

#

Active Low

*

Internal 120k

Ω pull-up

&

Internal 120 k

Ω pull-down

5.1 Crystal I/O

PIN NAME

TYPE

DESCRIPTION

6

XIN

IN

Crystal input with internal loading capacitors (18pF) and

feedback resistors.

7

XOUT

OUT

Crystal output at 14.318MHz nominally with internal loading

capacitors (18pF).

5.2 CPU, AGP, ZCLK and PCI, IOAPIC Clock Outputs

PIN NAME

TYPE

DESCRIPTION

38,37

CPUT0

CPUC0

OD

3.3V open drain differential clock outputs for AMD K7 CPU

40

CPUT1

OD

3.3V open drain singled –ended synchronize with CPUT0,

For chipset host bus

43,42

SRCT, SRCC

OUT Current mode differential clock outputs for SRC

31,30

AGP_0: 1

OUT 3.3V AGP clock outputs.

9,10

ZCLK0: 1

OUT 3.3V ZCLK clock outputs, For MuTIOL bus.

PCI_F0

OUT 3.3V PCI free running clock output.

14

FS2*

INtp120k

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

the output frequency. This is internal 120K pull up.

PCI_F1

OUT 3.3V PCI free running clock output.

15

FS3*

INtp120k

Latched input for FS3 at initial power up for H/W selecting

the output frequency, This is internal 120K pull up.

16,17,20,21

,22,23

PCI [0:5]

OUT Low skew (< 250ps) PCI clock outputs.

47,46

IOAPIC [0:1]

OUT 2.5V IOAPIC outputs.

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W83194BG-703 Datasheet(PDF) 8 Page - Winbond

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