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SI52146

更新时间: 2024-11-05 11:57:35
品牌 Logo 应用领域
芯科 - SILICON 时钟发生器输出元件PC
页数 文件大小 规格书
20页 184K
描述
PCI-EXPRESS GEN 1, GEN 2, & GEN 3 SIX OUTPUT CLOCK GENERATOR

SI52146 数据手册

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Si52146  
PCI-EXPRESS GEN 1, GEN 2, & GEN 3 SIX OUTPUT  
CLOCK GENERATOR  
Features  
PCI-Express Gen 1, Gen 2, &  
25 MHz crystal input or clock  
Gen 3 compliant  
input  
2
Low power push-pull type  
I C support with readback  
differential output buffers  
capabilities  
Integrated resistors on differential  
Triangular spread spectrum  
profile for maximum  
clocks  
Dedicated output enable pin for  
electromagnetic interference  
(EMI) reduction  
each clock  
Hardware selectable spread  
Industrial temperature:  
o
control  
–40 to 85 C  
Ordering Information:  
Six PCI-Express clocks  
3.3 V Power supply  
32-pin QFN package  
See page 18  
Pin Assignments  
Applications  
Network attached storage  
Multi-function printer  
Wireless access point  
Routers  
32  
31  
30  
29  
28  
27  
26  
25  
Description  
VDD  
24  
23  
VDD  
1
2
3
4
5
6
7
8
OE21  
DIFF5  
SSON2  
22  
21  
DIFF5  
VDD  
The Si52146 is a spread-controlled PCIe clock generator that can source  
six PCIe clocks simultaneously. The device has six hardware inputs for  
enabling the respective outputs on the fly while powered on along with the  
spread control hardware pin to enable Spread for EMI reduction.  
OE31  
33  
GND  
OE41  
OE51  
NC  
20 DIFF4  
19  
DIFF4  
18 DIFF3  
VDD  
17  
DIFF3  
9
10  
11  
12  
13  
14  
15  
16  
Functional Block Diagram  
Notes:  
1. Internal 100 kohm pull-up.  
2. Internal 100 kohm pull-down.  
DIFF0  
Patents pending  
XIN/CLKIN  
DIFF1  
XOUT  
PLL1  
Divider  
(SSC)  
DIFF2  
DIFF3  
DIFF4  
DIFF5  
SCLK  
Control & Memory  
SDATA  
CKPWRGD/PDB  
Control  
RAM  
OE [5:0]  
SSON  
Preliminary Rev. 0.1 12/11  
Copyright © 2011 by Silicon Laboratories  
Si52146  
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.  

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