pi6c557-05 Pericom Semiconductor Corporation, pi6c557-05 Datasheet

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pi6c557-05

Manufacturer Part Number
pi6c557-05
Description
100mhz, 200mhz Pcie 2.0 4 Outputs Clock Generator
Manufacturer
Pericom Semiconductor Corporation
Datasheet

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Product Features
• PCIe
• LVDS compatible outputs
• Supply voltage of 3.3V ±5%
• 25MHz crystal or clock input frequency
• HCSL outputs, 0.7V Current mode differential pair
• Jitter 40ps cycle-to-cycle (typ)
• Spread of -0.5%, -0.1%, -1.5%, and no spread
• Industrial temperature range
• Spread Bypass option available
• Spread and frequency selection via external pins
• Packaging: (Pb-free and Green)
Block Diagram
crystal
or clock
→Phase jitter - 2.1ps RMS (typ)
→20-pin, 173-mil wide TSSOP
25 MHz
S[2:0]
®
09-0039
Pulling
Capacitors
2.0 complaint
X1/CLK
X2
3
Spectrum/
Crystal
selection
Driver
Spread
Output
clock
VDD
GND
2
2
SS Circuitry
PLL
PD
R r(IREF)
OE
CLK0
CLK0
CLK1
CLK1
CLK2
CLK2
CLK3
CLK3
PCIe
1
®
Description
The PI6C557-05 is a spread spectrum clock generator compliant to
PCI Express
PC or embedded systems to substantially reduce Electromagnetic
Interference (EMI).
The PI6C557-05 provides four differential (HCSL) or LVDS spread
spectrum outputs. The PI6C557-05 is confi gured to select spread
and clock selection. Using Pericom's patented Phase-Locked Loop
(PLL) techniques, the device takes a 25MHz crystal input and
produces four pairs of differential outputs (HCSL) at 100MHz
and 200MHz clock frequencies. It also provides spread selection
of -0.5%, -0.1%, -1.5%, and no spread.
Pin Confi guration
2.0 Clock Generator with 4 HCSL Outputs
GNDXD
VDDXD
IREF
OE
PD
S0
S1
S2
X1
X2
®
2.0 and Ethernet requirements. The device is used for
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
PI6C557-05
PS9061
CLK0
CLK0
CLK1
CLK1
GNDODA
VDDODA
CLK2
CLK2
CLK3
CLK3
09/02/09

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pi6c557-05 Summary of contents

Page 1

... PCIe 2.0 Clock Generator with 4 HCSL Outputs ® Description The PI6C557- spread spectrum clock generator compliant to PCI Express PC or embedded systems to substantially reduce Electromagnetic Interference (EMI). The PI6C557-05 provides four differential (HCSL) or LVDS spread spectrum outputs. The PI6C557-05 is confi gured to select spread and clock selection ...

Page 2

... Selectable 100/200 MHz Spread Spectrum differential true output clock 0. Spread % Spread Type -0.5 Down -1.0 Down -1.5 Down No Spread Not Applicable -0.5 Down -1.0 Down -1.5 Down No Spread Not Applicable 2 2.0 Clock Generator with 4 HCSL Outputs ® Output Frequency 100 100 100 100 200 200 200 200 PS9061 PI6C557-05 09/02/09 ...

Page 3

... Decoupling capacitors of 0.01μF or 0.1μF must be connected between each VDD pin and the PCB ground plane and placed as close to the VDD pin as possible. PI6C557-05 must be isolated from system power supply noise to perform optimally. Crystal Use a 25MHz fundamental mode parallel resonant crystal with less than 30PPM of error across temperature ...

Page 4

... Clock Generator with 4 HCSL Outputs ® Dimension or Value Unit 0.5 max inch 0.2 max inch 0.2 max inch 33 Ohm 49.9 Ohm Dimension or Value Unit 2 min to 16 max inch 1.8 min to 14.4 max inch Dimension or Value Unit 0.25 min to 14 max inch 0.225 min to 12.6 max inch L4 L4’ PCI-Express Load or Connector PS9061 PI6C557-05 09/02/09 ...

Page 5

... PCIe 2.0 Clock Generator with 4 HCSL Outputs ® Dimension or Value 0.5 max 0.2 max 100 100 150 L1’ L2’ 1250 mV 1150 mV 5 PI6C557-05 Unit inch inch Ohm Ohm Ohm L3’ LVDS Device Load PS9061 09/02/09 ...

Page 6

... Exposure to absolute maximum rating conditions for ex- tended periods may affect reliability. Min. Typ. Max. -40 +85 3.135 3.465 Min. Typ. Max. 3.135 3.3 3.465 2.0 VDD +0.3 GND -0.3 0 105 120 100 3.0 PS9061 PI6C557-05 Unit °C V Unit μ μ kΩ 09/02/09 ...

Page 7

... Max. 25 200 100 660 700 850 -150 0 250 350 550 140 40 3.1 30 31.5 175 332 700 175 344 700 45 3.0 3.0 Min. Typ. Max PS9061 PI6C557-05 Unit MHz MHz kHz μs 10 μ Unit °C/W °C/W 09/02/09 ...

Page 8

... SEATING Max PLANE .002 0.05 .006 0.15 Pericom Semiconductor Corporation 3545 N. 1st Street, San Jose, CA 95134 1-800-435-2335 DESCRIPTION: 20-Pin, 173-Mil Wide, TSSOP PACKAGE CODE: L Package Code L 8 PI6C557-05 DOCUMENT CONTROL NO 1311 REVISION: E DATE: 03/09/05 .004 0.09 0.20 .008 0.45 .018 0.75 .030 .238 .269 6.1 6.7 • www.pericom.com PackageType Pb-free & ...

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