參數(shù)資料
型號(hào): PI6C410BVE
廠商: Pericom Semiconductor Corp.
英文描述: Clock Generator for Intel PCI-Express Server Chipset
中文描述: 時(shí)鐘發(fā)生器英特爾的PCI - Express服務(wù)器芯片組
文件頁數(shù): 10/15頁
文件大小: 312K
代理商: PI6C410BVE
PI6C410B
Clock Generator for Intel PCI-Express Server Chipset
10
PS8811A 02/01/06
Spread Spectrum Specifications
Supports Spread Spectrum clocking and can be enabled and disabled via SMBus control. The maximum Spread Spectrum Modula-
tion is –0.5% down spread with frequency from 30KHz to 33K Hz.
Tperiod
Min
Max
CPU @ 399.000MHz
2.4993
2.5133
CPU @ 400.000MHz
CPU @ 332.500MHz
2.9991
3.0160
CPU @ 333.333MHz
CPU @ 266.000MHz
3.7489
3.7700
CPU @ 266.666MHz
CPU @ 199.500MHz
4.9985
5.0266
CPU @ 200.000MHz
CPU @ 166.250MHz
5.9982
6.0320
CPU @ 166.666MHz
CPU @ 133.000MHz
7.4978
7.5400
CPU @ 133.333MHz
CPU @ 99.750MHz
9.9970
10.0533
CPU @ 100.000MHz
SSC ON
SSC OFF
Tperiod
Unit
Min
2.4993
2.9991
3.7489
4.9985
5.9982
7.4978
9.9970
Max
2.5008
3.0009
3.7511
5.0015
6.0018
7.5023
10.0030
ns
SRC @ 99.750MHz
9.9970
10.0533
SRC @ 100.000MHz
9.9970
10.0030
PCIF / PCI @
33.250MHz
29.9910
30.1598
PCIF / PCI @
33.333MHz
29.9910
30.0090
Crystal Recommendations
Frequency
Cut
Loading
Load
Cap
20pF
Drive
Max.
0.1mW
Shunt
Cap Max.
5pF
Motional
Cap Max.
0.016pF
Tolerance
Max.
50ppm
Stability
Max.
50ppm
Aging
Max.
5ppm
14.31818 MHz
AT
Parallel
Notes:
1.
External trim capacitors (Ce) are required by using this formula Ce = 2*C
L
– (Cs + Ci). Typical Ce = 33pF when Crystal Load = 20pF, Trace
capacitance (Cs) = 2.8pF and XTAL pins capacitance = 4.5pF.
Tristate Specifications
CPU & SRC Tristate clock truth table
Signal
Pwrdwn pin
Pwrdwn Tristate Bit
Stoppable
Outputs
Running
Driven @ Iref x 2
Tristate
Non-stop
Outputs
Running
Driven @ Iref x 2
Tristate
CPU[0:3],
SRC[0:4],
0
1
1
X
0
1
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