参数资料
型号: ICS8430S07AKILFT
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 时钟产生/分配
英文描述: 133.333 MHz, OTHER CLOCK GENERATOR, QCC32
封装: 5 X 5 MM, 0.925 MM HEIGHT, ROHS COMPLIANT, MO-220VHHD-2/-4, VFQFN-32
文件页数: 4/23页
文件大小: 1792K
代理商: ICS8430S07AKILFT
ICS8430S07I
CLOCK GENERATOR FOR CAVIUM PROCESSORS
PRELIMINARY
IDT / ICS CLOCK GENERATOR
12
ICS8430S07AKI REV. A DECEMBER 4, 2007
Power Supply Filtering Technique
As in any high speed analog circuitry, the power supply pins are
vulnerable to random noise. To achieve optimum jitter per-
formance, power supply isolation is required. The ICS8430S07I
provides separate power supplies to isolate any high switching
noise from the outputs to the internal PLL. VDD, VDDA and VDDO_X
should be individually connected to the power supply plane
through vias, and 0.01F bypass capacitors should be used for
each pin. Figure 2 illustrates this for a generic VDD pin and also
shows that VDDA requires that an additional 10 resistor along with
a 10
F bypass capacitor be connected to the V
DDA pin.
Figure 2. Power Supply Filtering
Recommendations for Unused Input and Output Pins
Inputs:
CLK/nCLK Inputs
For applications not requiring the use of the differential input, both
CLK and nCLK can be left floating. Though not required, but for
additional protection, a 1k
resistor can be tied from CLK to
ground.
Crystal Inputs
For applications not requiring the use of the crystal oscillator input,
both XTAL_IN and XTAL_OUT can be left floating. Though not
required, but for additional protection, a 1k
resistor can be tied
from XTAL_IN to ground.
LVCMOS Control Pins
All control pins have internal pull-ups or pull-downs; additional
resistance is not required but can be added for additional
protection. A 1k
resistor can be used.
Outputs:
LVPECL Outputs
All unused LVPECL outputs can be left floating. We recommend
that there is no trace attached. Both sides of the differential output
pair should either be left floating or terminated.
LVCMOS OUTPUTS
All unused LVDS output pairs can be either left floating or
terminated with 100
across. If they are left floating, we
recommend that there is no trace attached.
VDD
VDDA
3.3V
10
10F
.01F
相关PDF资料
PDF描述
ICS843101AG-312 312.5 MHz, OTHER CLOCK GENERATOR, PDSO16
ICS843101AGI-312T 312.5 MHz, OTHER CLOCK GENERATOR, PDSO16
ICS843101AGI-312LFT 312.5 MHz, OTHER CLOCK GENERATOR, PDSO16
ICS843101AGI-312LF 312.5 MHz, OTHER CLOCK GENERATOR, PDSO16
ICS843101IAG-100LFT 100 MHz, OTHER CLOCK GENERATOR, PDSO16
相关代理商/技术参数
参数描述
ICS8430S07I 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:Clock Generator for Cavium Processors
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