PI6CFGL402B Datasheet, PDF (1/8 Pages) Pericom Semiconductor Corporation – Low Power PCIe 3.0 Clock Generator with 4 HCSL Outputs

PI6CFGL402B
Low Power PCIe 3.0 Clock Generator with 4 HCSL Outputs
Features
• PCIe® 3.0, 2.0 and 1.0 complaint
• LVDS compatible outputs
• Supply voltage of 3.3V ±5%
• 25MHz crystal or clock input frequency
• Low power consumption with independent output power
supply 1.05V to 3.3V
• Jitter 40ps cycle-to-cycle (typ)
• Spread of -0.5%, -1.0%, -1.5%, and no spread
• Industrial temperature range
• Spread Bypass option available
• Spread and frequency selection via external pins
• Packaging: (Pb-free and Green)
→20-pin, 173-mil wide TSSOP
Description
The PI6CFGL402B is a spread spectrum clock generator
compliant to PCI Express® 3.0 and Ethernet requirements.
The device is used for PC or embedded systems to substantially
reduce Electromagnetic Interference (EMI).
The PI6CFGL402B provides four differential (HCSL) or LVDS
spread spectrum outputs. The PI6CFGL402B is configured
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%, -1.0%, -1.5%, and no spread.
Block Diagram
VDD PD OE
2
S[2:0] ³
Spread
Spectrum/
Output
clock
selection
SS Circuitry
25 MHz^X1/CLK
crystal
or clock _X2
Crystal
Driver
PCualpliancgitors
PLL
2
GND
Pin Configuration
CLK0
CLK0
CLK1
CLK1
CLK2
CLK2
CLK3
CLK3
VDDA3.3
1
S0
2
S1
3
S2
4
X1
5
X2
6
PD
7
OE
8
GNDXD
9
VDDDIG3.3
10
20
CLK0
19
CLK0
18
CLK1
17
CLK1
16
GNDA
15
VDDO
14
CLK2
13
CLK2
12
CLK3
11
CLK3
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15-0032
1
www.pericom.com 03/03/15