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參數(shù)資料
| 型號： | 9248YF-195LF-T |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時鐘產(chǎn)生/分配 |
| 英文描述： | 140 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48 |
| 封裝： | 0.300 INCH, LEAD FREE, MO-118, SSOP-48 |
| 文件頁數(shù)： | 1/15頁 |
| 文件大?。?/td> | 158K |
| 代理商： | 9248YF-195LF-T |
Integrated
Circuit
Systems, Inc.
ICS9248- 195
0375E—12/15/08
Block Diagram
Frequency Generator & Integrated Buffers for PENTIUM II IIITM & K6
Pin Configuration
48-Pin SSOP
* Internal Pull-up Resistor of 120K to VDD
VDDREF
*SPREAD/REF0
GNDREF
X1
X2
VDDPCI
*CPU2.5_3.3#/PCICLK_F
*FS3/PCICLK0
GNDPCI
*SEL24_48#/PCICLK1
*SELPCIE_6#/PCICLK2
PCICLK3
PCICLK4
VDDPCI
BUFFER IN
GNDPCI
PCICLK5
PCICLK6/
VDDCOR
PCI_STOP#
*Vtt_PWRGD/PD#
GND48
SDATA
SCLK
PCICLK_E
REF1/FS2*
VDDLCPU
CPUCLK_F
CPUCLK0
GNDLCPU
CPUCLK1
CPUCLK2
CLK_STOP#
GNDSDR
SDRAM_F
SDRAM0
SDRAM1
VDDSDR
SDRAM2
SDRAM3
GNDSDR
SDRAM4
SDRAM5
VDDSDR
SDRAM6
SDRAM7
VDD48
48MHz/FS0*
24_48MHz/FS1*
ICS9248-195
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Recommended Application:
440BX, MX, VIA PM/PL/PLE 133 style chip set, with
Coppermine or Tualatin processor, for note book
applications.
Output Features:
4 - CPUs @ 2.5V/3.3V
including 1 free running CPUCLK_F
9 - SDRAM @ 3.3V
7 - PCI @ 3.3V, including 1 free running PCICLK_F
1 - PCI Early @ 3.3V
1 - 48MHz, @ 3.3V fixed.
1 - 24/48MHz @ 3.3V
2 - REF @3.3V, 14.318MHz.
Features:
Up to 137MHz frequency support
97MHz to support high-end AMD processor.
Support power management: CLK, PCI, stop and
Power down Mode from I
2C programming.
Spread spectrum for EMI control
Uses external 14.318MHz crystal
FS pins for frequency select
Functionality
2
t
i
B6
t
i
B5
t
i
B4
t
i
BK
L
C
U
P
CK
L
C
I
C
P
0000
7
6
.
6
63
3
.
3
000
1
0
.
0
13
3
.
3
00
1
0
7
6
.
6
63
3
.
3
00
11
3
.
3
13
3
.
3
01
0
7
6
.
6
63
3
.
3
01
0
.
0
13
3
.
3
01
1
0
.
0
13
3
.
3
0
111
3
.
3
13
3
.
3
1
000
7
6
.
6
63
3
.
3
10
0
1
0
.
0
13
3
.
3
10
0
.
0
90
0
.
0
3
10
1
3
.
3
13
3
.
3
11
00
0
.
0
70
0
.
5
3
11
0
1
0
.
5
0
10
0
.
5
3
111
0
3
.
3
13
3
.
3
1111
0
.
0
4
10
0
.
5
3
Key Specifications:
CPU Output Jitter @ 2.5V: <300ps
CPU Output Jitter @ 3.3V: <250ps
PCI Output Jitter @ 3.3V: <250ps
CPU Output Skew @ 2.5V: <175ps
CPU Output Skew @ 3.3V: <175ps
PCI Output Skew @ 3.3V: <500ps
PCI Early to PCI Skew @ 3.3V: typ = 3ns
SDRAM Output Skew @ 3.3V: <500ps
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