PI6CFGL202B Datasheet, PDF (1/8 Pages) Pericom Semiconductor Corporation – Low Power PCIe 3.0 Clock Generator with 2 HCSL Outputs

PI6CFGL202B
Low Power PCIe 3.0 Clock Generator with 2 HCSL Outputs
Features
ÎÎPCIe® 3.0, 2.0 and 1.0 compliant
ÎÎLVDS compatible outputs
ÎÎSupply voltage of 3.3V ±10%
ÎÎ25MHz crystal or clock input frequency
ÎÎLow power consumption with independent output power
supply 1.05V to 3.3V
ÎÎJitter 35ps cycle-to-cycle (typ)
ÎÎSpread of -0.5%, -0.75%, and no spread
ÎÎIndustrial temperature range
ÎÎSpread Bypass option available
ÎÎSpread and frequency selection via external pins
ÎÎPackaging: (Pb-free and Green)
àà 16-pin TSSOP (L16)
Description
The PI6CFGL202B is a spread spectrum clock generator compli-
ant to PCI Express® 3.0 and Ethernet requirements. The device is
used for PC or embedded systems to substantially reduce Electro-
magnetic Interference (EMI).
The PI6CFGL202B provides two differential (HCSL) or LVDS
spread spectrum outputs. The PI6CFGL202B 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
VDD
2
SS1:SS0
2
S1:S0
2
XTAL_IN or Ref CLK
25 MHz
crystal or clock
XTAL_OUT
Pulling
Capacitors
Control
Logic
Phase
Lock
Loop
Crystal
Driver
2
GND
OE
Pin Configuration (16-Pin TSSOP)
S0 1
CLK0
S1 2
CLK0
SS0 3
XTAL_IN 4
XTAL_OUT 5
CLK1
CLK1
OE 6
GNDX 7
SS1 8
16 VDDA3.3
15 CLK0
14 CLK0#
13 GNDA
12 VDDO
11 CLK1
10 CLK1#
9 VDDDIG3.3
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15-0025
1
www.pericom.com 03/03/15
PI6C557-03B