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PDF PI6C557-03AQ Data sheet ( Hoja de datos )
| Número de pieza | PI6C557-03AQ | |
| Descripción | PCIe 2.0 Clock Generator | |
| Fabricantes | Pericom Semiconductor | |
| Logotipo |  |
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PI6C557-03AQ
PCIe 2.0 Clock Generator with 2 HCSL Outputs
for Automotive Applications
Features
ÎÎPCIe® 2.0 compliant
àà Phase jitter - 2.1ps RMS (typ)
ÎÎLVDS compatible outputs
ÎÎSupply voltage of 3.3V ±10%
ÎÎ25MHz crystal or clock input frequency
ÎÎHCSL outputs, 0.8V Current mode differential pair
ÎÎJitter 35ps cycle-to-cycle (typ)
ÎÎSpread of -0.5%, -0.75%, and no spread
ÎÎAEC-Q100 qualified
ÎÎSpread Bypass option available
ÎÎSpread and frequency selection via external pins
ÎÎPackaging: (Pb-free and Green)
àà 16-pin TSSOP (L16)
Description
The PI6C557-03AQ is a spread spectrum clock generator compli-
ant to PCI Express® 2.0 and Ethernet requirements. The device is
used for PC or embedded systems to substantially reduce Electro-
magnetic Interference (EMI).
The PI6C557-03AQ provides two differential (HCSL) or LVDS
spread spectrum outputs. The PI6C557-03AQ is configured to se-
lect spread and clock selection. Using Pericom's patented Phase-
Locked Loop (PLL) techniques, the device takes a 25MHz crystal
input and produces two pairs of differential outputs (HCSL) at
25MHz, 100MHz, 125MHz and 200MHz clock frequencies. It
also provides spread selection of -0.5%, -0.75%, and no spread.
Block Diagram
Pin Configuration (16-Pin TSSOP)
SS1:SS0
2
S1:S0
2
X1/CLK
25 MHz
crystal or clock X2
Pulling
Capacitors
VDD
2
Control
Logic
Phase
Lock
Loop
Crystal
Driver
2
GND
RR
OE
CLK0
CLK0
CLK1
CLK1
S0
S1
SS0
X1/CLK
X2
OE
GNDX
SS1
1
2
3
4
5
6
7
8
16 VDDX
15 CLK0
14 CLK0
13 GNDA
12 VDDA
11 CLK1
10 CLK1
9 IREF
All trademarks are property of their respective owners.
14-0076
1
www.pericom.com
PI6C557-03AQ
Rev A
05/22/14
1 page  
PI6C557-03AQ
PCIe 2.0 Clock Generator with 2 HCSL Outputs for Automotive Applications
Application Information
LVDS Recommendations for Differential Routing
L1 length, route as non-coupled 50Ω trace.
L2 length, route as non-coupled 50Ω trace.
RP
RQ
RT
L3 length, route as 100Ω differential trace.
L3 length, route as 100Ω differential trace.
Dimension or Value
0.5 max
0.2 max
100
100
150
Unit
inch
inch
Ω
Ω
Ω
LVDS Device Routing
PI6C557-03AQ
Clock
Output
L1
RQ
L1’
RT
RT
L2’ L2
L3
L3’
RP
LVDS
Device
Load
All trademarks are property of their respective owners.
14-0076
5
www.pericom.com
PI6C557-03AQ
Rev A
05/22/14
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet PI6C557-03AQ.PDF ] | |
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