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參數(shù)資料
| 型號(hào)： | SM8702AM |
| 廠商： | Seiko NPC Corporation |
| 英文描述： | Clock Generator IC |
| 中文描述： | 時(shí)鐘發(fā)生器IC |
| 文件頁(yè)數(shù)： | 1/16頁(yè) |
| 文件大?。?/td> | 155K |
| 代理商： | SM8702AM |
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SM8702AM
NIPPON PRECISION CIRCUITS—1
NIPPON PRECISION CIRCUITS INC.
Clock Generator IC
OVERVIEW
sonal computer (PC) motherboards. It uses a single 14.318MHz crystal oscillator element and 2 built-in PLLs
to simultaneously and independently generate 2 CPU clocks, 6 PCI bus clocks, 2 reference clocks with the
same frequency as the crystal element, 48MHz USB interface clock, and 24MHz Super I/O chip clock outputs.
It also has 14 outputs that can function as SDRAM clocks by buffering an external input SDRAM clock.
FEATURES
I
Intel
compatibles supported
2.5/3.3V CPU clock outputs and IOAPIC clock
output
14
×
SDRAM clock outputs (3 DIMMs)
2
×
CPU clock outputs
(60), 66, 75, 83, 95, 100, 103, 112, (124), 133MHz
CPU/SDRAM clock frequencies. Values in paren-
theses are available as mask options.
6
×
PCI bus clock outputs (one free-running out-
put)
33MHz or 1/2, 1/3, 1/4 of the CPU clock fre-
quency
2
×
reference clock outputs and 1
output
14.318MHz REF/IOAPIC clock frequency
1
×
48MHz USB interface clock output
1
×
24MHz clock output for Super I/O chip
I
C serial data bus for frequency/mode output con-
trol
CPU-stop and PCI-stop functions
Spread Spectrum Clock Generator (SSCG) out-
puts
Center spread/Down spread, ± 0.5% or ± 1.5%
3.3V (VDD) and 2.5/3.3V (VDDL) supply volt-
ages
48-pin SSOP package (pin compatible with
ICS9148-26)
Pentium
II, Pentium
III, and AMD x86-
I
I
I
I
I
×
IOAPIC clock
I
I
I
2
I
I
I
I
APPLICATIONS
I
PC motherboards using Intel
tium
II/III, AMD-K6 devices, and x86 architec-
ture CPUs
Pentium
, Pen-
PINOUT
48-pin SSOP (300 mil)
(Top view)
ORDERING INFORMATION
Intel
AMD and AMD-K6 are registered trademarks of Advanced Micro Devices, Inc..
I
C Bus is a registered trademark of Philips Electronics N. V..
and Pentium
are registered trademarks of Intel co..
2
Device
Package
SM8702AM
48-pin SSOP
VDD1
REF0
VSS
XT
XTN
VDD2
PCICLK_F/MODE
PCICLK0
VDDL1
IOAPIC
REF1/FS2
VSS
CPUCLK0
CPUCLK1
VDDL2
SDRAM13
SDRAM12
VSS
SDRAM0
SDRAM1
VDD3
SDRAM2
SDRAM3
VSS
SDRAM4
SDRAM5
VDD3
SDRAM6
SDRAM7
VDD4
48MHz/FS0
24MHz/FS1
VSS
PCICLK1
PCICLK2
PCICLK3
PCICLK4
VDD2
BUFFERIN
1
48
S
VSS
SDRAM11/CPU_STOP#
SDRAM10/PCI_STOP#
VDD3
SDRAM9
SDRAM8
VSS
SDATA
SCLK
24
25
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SM8703 | Clock Generator for MPEG2 System |
| SM8703AV | Clock Generator for MPEG2 System |
| SM8706 | Clock Generator for DVD Players |
| SM8706A | Clock Generator for DVD Players |
| SM8706AV | Clock Generator for DVD Players |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SM8703 | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Clock Generator for MPEG2 System |
| SM8703AV | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Clock Generator for MPEG2 System |
| SM8703CV | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Clock Generator for DVD Players |
| SM8706 | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Clock Generator for DVD Players |
| SM8706A | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Clock Generator for DVD Players |
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