W83194BR-372 데이터 시트보기 (PDF) - Winbond

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W83194BR-372

CLOCK GENERATOR FOR SIS 746/748 CHIPSETS

Winbond 

W83194BR-372

5. PIN DESCRIPTION

BUFFER TYPE SYMBOL

IN

INtp120k

INtd120k

OUT

OD

#

*

&

DESCRIPTION

Input

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

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

Output

Open Drain

Active Low

Internal 120kΩ pull-up

Internal 120 kΩ pull-down

5.1 Crystal I/O

PIN

PIN NAME

6

XIN

7

XOUT

TYPE

IN

OUT

DESCRIPTION

Crystal input with internal loading capacitors (18pF) and

feedback resistors.

Crystal output at 14.318MHz nominally with internal loading

capacitors (18pF).

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

PIN

40,39

43

31,30

9,10

14

15

16, 17, 20,

21, 22, 23

47, 46

PIN NAME

CPUT0

CPUC0

CPUT1

AGP_0: 1

ZCLK0: 1

PCI_F0

FS2&

PCI_F1

FS3*

TYPE

DESCRIPTION

OD 2.5V open drain differential clock outputs for AMD K7 CPU

OD

2.5V open drain singled –ended synchronize with CPUT0, For

chipset host bus

OUT 3.3V AGP clock outputs.

OUT 3.3V ZCLK clock outputs, For MuTIOL bus.

OUT 3.3V PCI free running clock output.

INtd120k

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

output frequency. This is internal 120K pull down.

OUT 3.3V PCI free running clock output.

INtp120k

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

output frequency, This is internal 120K pull up.

PCI [0:5]

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

IOAPIC [0:1] OUT 2.5V IOAPIC outputs.

Publication Release Date: April 13, 2005

-3-

Revision 1.1

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