FS6159-01 데이터 시트보기 (PDF) - AMI Semiconductor

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FS6159-01

Auxiliary Motherboard Clock Generator/Buffer IC

AMI Semiconductor 

FS6159-01

Auxiliary Motherboard Clock Generator/Buffer IC

1.0 Features

• Develops the peripheral clocks required for 2-way

and 4-way multi-processor clock-partitioned plat-

forms, including:

M Six buffered copies of the 66.67MHz 66REF ref-

erence input

M Twelve 33.3MHz PCI clocks, developed as a di-

vide-by-two of the 66REF reference input

M Two buffered copies of the 14.318MHz 14REF

reference input

M Two 48MHz clocks, generated by a PLL from the

14REF reference input

• Serial-bus interface control of all clock outputs

• Three clock management controls enable, disable

and tristate banks of clock outputs independently of

the serial interface

• Active-low PWR_DWN# signal allows shuts down the

PLL and disables outputs low

• Supports Test Mode and tristate output control to fa-

cilitate board testing

• Available in a 56-pin SSOP and TSSOP

Table 1: Clock Parameters

CLOCK

GROUP

CK66

PCI

REF

CK48

# SUPPLY SUPPLY

PINS VOLTAGE GROUP

6

3.3V

VDD_66

12

3.3V

VDD_P

2

3.3V

VDD_R

2

3.3V

VDD_48

FREQUENCY

(MHz)

66.67

33.33

14.318

48.008

SKEW

(MAX)

250ps

300ps

-

-

Table 2: Clock Offsets

RELATION

CK66 leads PCI

PHASE

0°

MIN

1.5ns

TYP

MAX

3.5ns

Figure 1: Block Diagram

66REF

SEL_Q

SEL_R

SEL_S

SCL

SDA

PWR_DWN#

÷2

SMBus

Output

Control

PLL

14REF

FS6159

Figure 2: Pin Configuration

VSS_N 1

14REF 2

VDD_N 3

66REF 4

VSS_P 5

PCI_0 6

PCI_1 7

VDD_P 8

VSS_P 9

PCI_2 10

PCI_3 11

VDD_P 12

VSS_P 13

PCI_4 14

PCI_5 15

VDD_P 16

PCI_6 17

PCI_7 18

VSS_P 19

VDD_P 20

PCI_8 21

PCI_9 22

VSS_P 23

PCI_10 24

PCI_11 25

VDD_P 26

SEL_Q 27

SEL_R 28

56 VDD_R

55 REF_1

54 REF_0

53 VSS_R

52 VDD_66

51 CK66_5

50 CK66_4

49 VSS_66

48 VSS_66

47 CK66_3

46 CK66_2

45 VDD_66

44 VDD_66

43 CK66_1

42 CK66_0

41 VSS_66

40 VDD

39 VSS

38 VDD_48

37 CK48_1

36 CK48_0

35 VSS_48

34 SEL_S

33 PWR_DWN#

32 VDD_S

31 VSS_S

30 SCL

29 SDA

VDD_66

CK66_0:4

CK66_5

VSS_66

VDD_P

PCI_0:5

PCI_6:7

PCI_8:11

VSS_P

VDD_48

CK48_0

CK48_1

VSS_48

VDD_R

REF_0:1

VSS_R

Intel and Pentium are registered trademarks of Intel Corporation. Lexmark is a trademark of Lexmark International, Inc. Non-linear spread spectrum modulation profile is licensed under US Patent

No. 5488627, Lexmark International, Inc. This document contains information on a preproduction product. Specifications and information herein are subject to change without notice.

ISO9001

2.27.02

IntFF

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