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參數(shù)資料
| 型號(hào)： | IMISG577CYB |
| 元件分類： | 時(shí)鐘產(chǎn)生/分配 |
| 英文描述： | PROC SPECIFIC CLOCK GENERATOR, PDSO48 |
| 封裝： | SSOP-48 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 166K |
| 代理商： | IMISG577CYB |
SG577C
Low EMI Clock Generator for Pentium II Systems with Power
Management
Approved Product
INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.
Rev 2.0
8/12/98
MILPITAS, CA 95035 TEL: 408-263-6300 ext. 275 FAX 408-263-6571
Page 1 of 10
PRODUCT FEATURES
T Supports Pentium
. Pentium
II & Pro CPUs.
T Designed to meet Intel chipset specification
T 4 CPU and 8 PCI clocks
T Two 48 MHz fixed clocks for USB and Super IO.
T Separate supply pins for mixed CPU, IOAPIC, and
Fixed/PCI clocks
T < 175 ps Max. skew among CPU clocks.
T < 250 ps Max. skew among PCI clocks.
T Controlled current output buffers
T Power management feature
T 2 IOAPIC clocks for multiprocessor support.
T 48-pin SSOP package
T Spread Spectrum EMI reduction mode
BLOCK DIAGRAM
REF
OSC
Xin
Xout
REF[1:3]
IOAPIC[1:2}
FS[0:2]
CPU[1:4]
PCIF
PCI[1:7]
PLL2
48M[1:2]
PSTOP
#SSM
CSTOP
PLL1
VDDF
VDDP
VDDC
VDDI
VDDR
FREQUENCY TABLE
FS2
FS1
FS0
CPU
PCI
0
Tri-State
0
1
66 (66.58)*
33.3*
1
0
Ref/2
Ref/4
1
100 (99.7)**
33.2**
NOTE: *Down Spread 1.25% (total)
**Down Spread .5% (total)
CONNECTION DIAGRAM
5()
966
;,1
;287
966
3&,B)
3&,
9''3
3&,
966
3&,
9''3
966
9''
9'')
0
966
)6
660
3'
36723
&6723
9''
&38
966
&38
9''&
1&
966
9''&
&38
966
,2$3,&
9'',
5()
9''5
966
,0,6*
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