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ICS9FG108YG-LFT Datasheet

  • ICS9FG108YG-LFT

  • Programmable FTG for Differential P4 CPU, PCI-Express & SATA...

  • 13頁

  • ICS

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Integrated
Circuit
Systems, Inc.
ICS9FG108
Advance Information
Programmable FTG for Differential P4
TM
CPU, PCI-Express & SATA Clocks
Recommended Application:
Pin Configuration
Frequency Timing Generator for Differential CPU, PCI-Express
XIN/CLKIN 1
& SATA clocks
Features:
鈥?/div>
Generates common frequencies from 14.318 MHz or 25
MHz
鈥?/div>
Crystal or reference input
鈥?/div>
8 - 0.7V current-mode differential output pairs
鈥?/div>
Supports Serial-ATA at 100 MHz
鈥?/div>
Two spread spectrum modes: 0 to -0.5 downspread and
+/-0.25% centerspread
鈥?/div>
Unused inputs may be disabled in either driven or Hi-Z
state for power management.
Key Specifications:
鈥?/div>
Output cycle-to-cycle jitter < 85 ps
鈥?/div>
Output to output skew < 85 ps
鈥?/div>
+/-300 ppm frequency accuracy on output clocks
X2
VDD
GND
REFOUT
FS2
OE_7**
DIF_7
DIF_7#
VDD
DIF_6
DIF_6#
OE_6*
VDD
GND
OE_5*
DIF_5
DIF_5#
VDD
DIF_4
DIF_4#
OE_4**
SDATA
SCLK
Frequency Select Table
SEL14M_25M#
FS2 FS1 FS0 OUTPUT(MHz)
(FS3)
0
0
0
0
100.00
0
0
0
1
125.00
0
0
1
0
133.33
0
0
1
1
166.67
0
1
0
0
200.00
0
1
0
1
266.66
0
1
1
0
333.33
0
1
1
1
400.00
1
0
0
0
100.00
1
0
0
1
125.00
1
0
1
0
133.33
1
0
1
1
166.67
1
1
0
0
200.00
1
1
0
1
266.66
1
1
1
0
333.33
1
1
1
1
400.00
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
VDDA
GNDA
IREF
FS0
FS1
OE_0**
DIF_0
DIF_0#
VDD
DIF_1
DIF_1#
OE_1*
VDD
GND
OE_2*
DIF_2
DIF_2#
VDD
DIF_3
DIF_3#
OE_3**
SEL14M_25M#
SPREAD
DIF_STOP#
Note:
Pin names followed by '**' have 120 Kohm pull DOWN resistors
Pin names followed by an '*' have 120 Kohm pull UP resistors
48-pin SSOP & TSSOP
0823鈥?4/02/04
ADVANCE INFORMATION
documents contain information on products in the formative or design phase development. Characteristic data and other specifications are design goals.
Third party brands and names are the property of their respective owners
ICS9FG108

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