SI52146 CLOCK GENERATOR Datasheet

SI52146 CLOCK GENERATOR

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. VDD OE21 SSON 2 OE31 OE41 OE51 NC VDD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16.

Features

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 PCI-Express Gen 1, Gen 2, &
 Gen 3 compliant Low power push-pull type
 differential output buffers Integrated resistors on differential
 clocks Dedicated output enable pin for each clock Hardware selectable spread
 control Six PCI-Express clocks
 25 MHz crystal input or clock input I2C support with readback capabilities Triangular spread spectrum profile for maximum electromagnetic interference (EMI) reduction Industrial temperature:
–40 to 85 oC 3.3 V Power supply
 32-pin QFN package Ordering Information: See page 18 Applications
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 Pin Assignments CKPWRGD_PDB1 SDATA.

No.	Partie #	Fabricant	Description
1	SI52143	Silicon Laboratories	CLOCK GENERATOR
2	Si52147	Silicon Laboratories	CLOCK GENERATOR
3	SI52111-A1	Silicon Laboratories	PCI-EXPRESS GEN 1 SINGLE OUTPUT CLOCK GENERATOR
4	SI52111-A2	Silicon Laboratories	PCI-EXPRESS GEN 1 SINGLE OUTPUT CLOCK GENERATOR
5	SI52111-B5	Silicon Laboratories	PCI-EXPRESS GEN 3 SINGLE OUTPUT CLOCK GENERATOR
6	SI52111-B6	Silicon Laboratories	PCI-EXPRESS GEN 3 SINGLE OUTPUT CLOCK GENERATOR
7	SI52112-A1	Silicon Laboratories	PCI-EXPRESS GEN 1 DUAL OUTPUT CLOCK GENERATOR
8	SI52112-A2	Silicon Laboratories	PCI-EXPRESS GEN 1 DUAL OUTPUT CLOCK GENERATOR
9	SI52112-B3	Silicon Laboratories	PCI-EXPRESS GEN 2 DUAL OUTPUT CLOCK GENERATOR
10	SI52112-B4	Silicon Laboratories	PCI-EXPRESS GEN 2 DUAL OUTPUT CLOCK GENERATOR
11	SI52112-B5	Silicon Laboratories	PCI-EXPRESS GEN 3 DUAL OUTPUT CLOCK GENERATOR
12	SI52112-B6	Silicon Laboratories	PCI-EXPRESS GEN 3 DUAL OUTPUT CLOCK GENERATOR

SI52146 - Silicon Laboratories

SI52146 CLOCK GENERATOR

Features

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