Datasheet > SI52146

SI52146

更新时间： 2024-11-23 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

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SI52146 数据手册

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

 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:

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

Description

VDD

OE2¹

DIFF5

SSON²

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

GND

OE4¹

OE5¹

20 DIFF4

DIFF4

18 DIFF3

VDD

DIFF3

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

Si52146

This information applies to a product under development. Its characteristics and specifications are subject to change without notice.

12 3 4 5 6 7...20

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