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參數(shù)資料
| 型號(hào)： | P2008AG-08TR |
| 廠商： | ALLIANCE SEMICONDUCTOR CORP |
| 元件分類： | XO, clock |
| 英文描述： | General Purpose EMI Reduction IC |
| 中文描述： | 32 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| 封裝： | GREEN, TSSOP-8 |
| 文件頁(yè)數(shù)： | 2/9頁(yè) |
| 文件大小： | 172K |
| 代理商： | P2008AG-08TR |
July 2005
rev 1.3
Pin Configuration
Pin Description
Pin#
P2008A
General purpose EMI Reduction IC
2 of 9
Notice: The information in this document is subject to change without notice.
1
2
3
4
5
6
7
8
P2008A
XIN/ CLKIN
XOUT
DIV2
VSS
SSON#
ModOUT
SR0
VDD
Pin Name
Type
Description
1
XIN/CLKIN
I
Crystal connection or external reference frequency input. This pin has dual
functions. It can be connected either to an external crystal or an external
reference clock.
Crystal connection. If using an external reference, this pin must be left
unconnected.
Digital logic input used to select normal output mode or divide-by-two output
mode. When this pin is HIGH, the frequency of the output clock is the same as the
input clock frequency. When it is tied low, the output frequency is half the input
clock frequency. This pin has an internal pull-up resistor.
Ground to entire chip. Connect to system ground.
Digital logic input used to enable Spread Spectrum function (Active LOW). Spread
Spectrum function enabled when LOW, disabled when HIGH.
This pin has an internal pull-low resistor.
Spread spectrum clock output.
Digital logic input used to select Spreading Range (
Refer Modulation Output and
Spreading Range Selection Table
.) This pin has an internal pull-up resistor.
Power supply for the entire chip
2
XOUT
O
3
DIV2
I
4
VSS
P
5
SSON#
I
6
ModOUT
O
7
SR0
I
8
VDD
P
Modulation Output and Spreading Selection (ModOUT = XIN/CLKIN)
Output Frequency Range DIV2 = 1
Modulation Rate
SR0
8MHz
12MHz
16MHz
20MHz
24MHz
28MHz
32MHz
0
± 2.2%
± 1.8%
± 1.2%
± 1.1%
± 1.0%
± 0.9%
± 0.8%
1
± 3.2%
± 2.5%
± 2.0%
± 1.6%
± 1.4%
± 1.25%
± 0.15%
(XIN/CLKIN/20) * 62.5 KHz
Modulation Output and Spreading Selection (ModOUT = XIN/CLKIN)
Output Frequency Range DIV2 = 0
Modulation Rate
SR0
4MHz
6MHz
8MHz
10MHz
12MHz
14MHz
16MHz
0
± 2.0%
± 1.8%
± 1.2%
± 1.1%
± 1.0%
± 0.9%
± 0.8%
1
± 3.2%
± 2.6%
± 2.0%
± 1.6%
± 1.4%
± 1.25%
± 0.15%
(XIN/CLKIN/20) * 62.5 KHz
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相關(guān)代理商/技術(shù)參數(shù) |
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