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PDF ICS9FG110 Data sheet ( Hoja de datos )
| Número de pieza | ICS9FG110 | |
| Descripción | Programmable FTG | |
| Fabricantes | Integrated Circuit Systems | |
| Logotipo |  |
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Integrated
Circuit
Systems, Inc.
ICS9FG110
Advance Information
Programmable FTG for Differential PCI-Express
Recommended Application:
Pin Configuration
Frequency Timing Generator for Differential PCI-Express clocks
Features:
• Generates common PCI-Express frequencies from
reference input clock (33.33MHz)
• 7 - 0.7V current-mode differential output pairs
• Three spread spectrum modes: spread tracking mode, 0
to -0.5 downspread and +/-0.25% centerspread
REFIN 1
SDATA 2
SCLK 3
*PD# 4
PCIEXT0 5
PCIEXC0 6
28 VDDA
27 GNDA
26 IREF
25 MODE_SEL**
24 PCIEXT6
23 PCIEXC6
• Support for M/N programming
VDDPCIEX 7
22 VDDPCIEX
• Programmable spread percentage
GND 8
21 GND
• Programmable output divider
PCIEXT1 9
20 PCIEXT5
• SMBus address is DC/DD
PCIEXC1 10
19 PCIEXC5
PCIEXT2 11
18 PCIEXT4
Key Specifications:
PCIEXC2 12
17 PCIEXC4
• Output cycle-to-cycle jitter < 85 ps
PCIEXT3 13
16 VDDPCIEX
• Output to output skew < 85 ps
PCIEXC3 14
15 GND
• +/-300 ppm frequency accuracy on output clocks
28-SSOP/TSSOP
* This pin have 120K pull-up to VDD
** This pin have 120K pull-down to GND
Functionality Table
MODE_SEL
0
1
PCIEX Freq
100
100
Spread Spectrum %
Spread Tracking Input
+/- 0.25 Center Spread
Power Groups
Pin Number
VDD
GND
28 27
7, 22
8, 15, 21
Description
Analog pow er & GND for CPU Core
Pow er & GND for PCI Express Clock
Outputs
Block Diagram
REFIN
SCLK
SDATA
MODE_SEL
Control
Logic
Programmable
Spread
PLL1
Programmable
Frequency
Dividers
PCIEXC (6:0)
PCIEXT (6:0)
I REF
0872—12/11/03
ADVANCE INFORMATION documents contain information on products in the formative or design phase development. Characteristic data and other specifications are design goals.
ICS reserves the right to change or discontinue these products without notice. Third party brands and names are the property of their respective owners.
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