70 DESIGN007 MAGAZINE I AUGUST 2018
1
DDR3/4 Fly-by Topology
Termination and Routing
E
If you are employing
high-frequency DDR4,
then the bandwidth
of the channel needs
to be as high as possi-
ble. However, with today's extremely fast edge
rates, the sequencing of the stubs and the end
termination, and the associate load, can make
a measurable difference in signal quality. In
this month's column I will look at how best to
route DDR3/4 fly-by topology.
2
Siemens and Synopsys Team Up
to Expand and Extend EDA
Collaboration
E
Siemens PLM Software and Synopsys have
agreed to collaborate on a wide range of elec-
tronic design automation (EDA) product interop-
erability projects for the benefit of their mutual
customer
s. The collaboration spans a number
of EDA domains from design to verification.
3
Help Wanted: PCB Design
Layout Specialist
E
I wish to reassure my fel-
low designers as you read
this article that, in my opin-
ion, you are in the catbird
seat. You are in
hot demand
and you should have great
opportunities for the remainder of your career.
By the way, after reading this article, you may
feel empowered to go ask for a raise. Please
don't tell your manager that I sent you!
4
ANSYS Reports Strong Revenue and
Earnings Growth in Q2 2018
E
ANSYS reported second quarter 2018 GAAP
and non-GAAP revenue growth of 11% and
13%, respectively, or 9% and 10%, respec-
tively, in constant currency. Recurring reve-
nue, which comprises lease license and annual
maintenance revenue, totaled 76% of revenue
for the second quarter on both a GAAP and
non-GAAP basis.
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