PCI-EXPRESS GEN 2 DUAL OUTPUT CLOCK GENERATOR - Silicon Laboratories
Description
Si52112-B3/B4
PCI-EXPRESS GEN 2 DUAL OUTPUT CLOCK GENERATOR
Features
PCI-Express Gen 1 and Gen 2 Extended Temperature:
compliant
–40 to 85 °C
Low power HCSL differential 3.
3 V Power supply
output buffers
Small package 10-pin TDFN
Supports Serial-ATA (SATA) at
(3x3 mm)
100 MHz
Si52112-B3 does not support
No termination resistors required spread spectrum outputs
25 MHz Crystal Input or Clock Si52112-B4 supports 0.
5% down
input
spread outputs
Triangular spread spectrum profile for maximum EMI reduction (Si52112-B4)
For PCIe Gen3 applications, see Si52112-B5/B6
Applications
Network Attached Storage Multi-function Printer
Wireless Access Point Routers
Description
Si52112-B3/B4 is a high-performance, PCIe clock generator that can source two PCIe clocks from a 25 MHz crystal or clock input.
The clock outputs are compliant to PCIe Gen 1 and Gen 2 specifications.
The ultrasmall footprint (3x3 mm) and industry leading low power consumption make Si52112-B3/B4 the ideal clock solution for consumer and embedded applications.
Ordering Information: See page 13
Pin Assignments
VDD 1 XOUT 2 XIN/CLKIN 3
VSS 4 VSS 5
10 VDD 9 DIFF2 8 DIFF2 7 DIFF1 6 DIFF1
Patents pending
VDD
XIN/CLKIN XOUT
PLL Divider
DIFF1 DIFF2
VSS
Rev 1.
2
Copyright © 2014 by Silicon Laboratories
Si52112-B3/B4
Si52112-B3/B4
2 Rev 1.
2
TABLE OF CONTENTS
Si52112-B3/B4
Section
Page
1.
Electrical Specifications .
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4
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Crystal Recommendations .
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7 2.
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Crystal Loading .
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7 2.
2.
Calculating Load Capacitors .
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8
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Test and Measurement Setup .
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