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參數(shù)資料
| 型號(hào)： | ICS950813 |
| 英文描述： | Frequency Generator with 200MHz Differential CPU Clocks |
| 中文描述： | 頻率發(fā)生器200MHz的CPU的時(shí)鐘差分 |
| 文件頁(yè)數(shù)： | 5/22頁(yè) |
| 文件大小： | 265K |
| 代理商： | ICS950813 |
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5
ICS950813
Advance Information
0708—10/10/02
Host Swing Select Functions
MULTSEL
Board Target
0
1
Output
Ioh = 4 * I REF
Ioh = 6 * I REF
1.0V @ 50 ohm
0.7V @ 50 ohm
Voh @ Z
Reference R,
Rr = 221 1%,
Iref = 5.00mA
Rr = 475 1%,
Iref = 2.32mA
50 ohms
50 ohms
PCI Select Functions
E_PCICLK1
1
1
0
1
1.0ns
1.5ns
0
0
0
1
0ns
0.5ns
E_PCICLK3
E_PCICLK(3,1)
*
Note:
E_PCICLK1 = 10Kohm resistor.
*
Approximate values
E_PCICLK3 = 10Kohm resistor.
0 = No resistor
1 = 10Kohm pull-up to V
DD
.
Frequency Select Table 2
Freqency Select
FS4
0
0
0
0
1
1
1
1
FS3
0
0
1
1
0
0
1
1
FS2
0
1
0
1
0
1
0
1
CPU, 3V66, PCI
Standard Clocking
Standard Clocking
Pwr Save Clocking
3% Overclocking
5% Overclocking
10% Overclocking
Clocking Mode
Standard Clocking
Standard Clocking
0.3% Center Spread
0 to -0.5%, Down Spread
0.3% Center Spread
0 to - 0.75%, Down
Spread Off
0.3% Center Spread
0.3% Center Spread
0.3% Center Spread
PWRSAVE# Usage Illustration
Bit4
Bit3
Bit2
FS4
FS3
FS2
X
X
X
X
X
X
X
X
X
X
X
X
Bit1
FS1
0
0
1
1
Bit0
FS0
0
1
0
1
CPU
MHz
XXX
XXX
XXX
XXX
AGP
MHz
XXX
XXX
XXX
XXX
PCI
MHz
XXX
XXX
XXX
XXX
1
1
1
1
0
0
0
0
0
0
0
0
0
0
1
1
0
1
0
1
80.00
106.66
160.00
133.33
53.33
53.33
53.33
53.33
26.67
26.67
26.67
26.67
PWRSAVE# = '0'. as
PWRSAVE# is driven to low '0'.
The output frequencies of the
CPU, AGP and PCI clock will
smoothly switch to frequencies
indicated by FS (4:2) = 100. The
frequencies gear ratio will be kept
the same. Notice that the 48MHz
& REF frequencies will not be
changed. This function can be
used with asynchronous
AGP/PCI frequencies.
PWRSAVE# = '1'. as
PWRSAVE# is driven back to
high '1'. The output frequencies
will be driven back to the
original programmed
frequencies smoothly. Notice
that this operation will only
happen after the PWRSAVE#
has been driven to '0'. This will
not affect power up or I2C
programmed frequencies if the
PWRSAFE# has been tied to a
'1'.
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| ICS950813YFT | Frequency Generator with 200MHz Differential CPU Clocks |
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| ICS950813YFT | 制造商:ICS 制造商全稱:ICS 功能描述:Frequency Generator with 200MHz Differential CPU Clocks |
| ICS950813YGT | 制造商:ICS 制造商全稱:ICS 功能描述:Frequency Generator with 200MHz Differential CPU Clocks |
| ICS950818 | 制造商:ICS 制造商全稱:ICS 功能描述:Frequency Generator with 200MHz Differential CPU Clocks |
| ICS950818YG-T | 制造商:ICS 制造商全稱:ICS 功能描述:Frequency Generator with 200MHz Differential CPU Clocks |
| ICS950901 | 制造商:ICS 制造商全稱:ICS 功能描述:Programmable Timing Control Hub for P4 |
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