PI6C49019 Datasheet, PDF (1/16 Pages) Pericom Semiconductor Corporation – Low Power Networking Clock Generator

PI6C49019
Low Power Networking Clock Generator
Features
ÎÎ3.3V supply voltage
ÎÎ25MHz XTAL or reference clock input
ÎÎOutput
• 4x100MHz HCSL PCIe clock outputs with integrated
series termination resistors, spread spectrum capability
on all 100MHz PCIe clock outputs with -0.5% down
spread.
• 1x single-ended 33.33MHz or 67.33MHz output with
spread spectrum capability
• 1x single-ended 125MHz output for Gigabit Ethernet
• 1x single-ended 25MHz
• 1x single-ended 48MHz
• 1x single-ended 19.2MHz
ÎÎPackaging (Pb free and Green) : 48-pin TSSOP (A)
ÎÎIndustrial temperature support
Block Diagram
Description
The new PI6C49019 is a high integration clock generator
intended for all kinds of embedded applications and networking
application with PCIe interface. The device is the most cost
effective way to generate multi-frequencies and multi-outputs
clocks from a 25MHz crystal and reference clock. The device can
generate four pairs low power 100MHz HCSL outputs for PCIe,
one single-ended 25MHz and 125 MHz output, one single-ended
48MHz and 19.2 MHz output, and one single-ended 33.33 MHz
or 67.33MHz output with spread spectrum.
Using a serially programmable SMBus interface, the PI6C49019
incorporates spread spectrum modulation on the four 100 MHz
PCI-Express outputs with -0.5% down spread and the 33.33
MHz/67.33 MHz output with down spread.
VDD
VDDO2
SCLK
SDATA
PD_RESET
PLL Clock
Synthesis, Dividers,
Buffers and
Configuration Logic
X1/ICLK
25 MHz
crystal or
clock input
X2
Clock Buffer/
Crystal
Oscillator
External caps required
with crystal for accurate
tuning of the clock
GND
100 MHz PCIE0
100 MHz PCIE1
100 MHz PCIE2
100 MHz PCIE3
25 MHz
125 MHz/REF
33.33 MHz/67.33 MHz
48 MHz
19.2 MHz
13-0103
1
www.pericom.com
PI6C49019
Rev. B
06/25/13