Quad Port Expander from Diodes Incorporated Provides BoM Savings and Easier PCB Layout for High-Speed Interfaces
March 26 2019 - 10:00AM
Business Wire
Diodes Incorporated (Nasdaq: DIOD), a leading global
manufacturer and supplier of high-quality application specific
standard products within the broad discrete, logic, analog and
mixed-signal semiconductor markets, today announced the PI7C1401
quad port expander. The PI7C1401 is a cost-effective solution to
low-speed signal management and I2C aggregation in advanced
embedded systems using multiple high-speed interfaces. The PI7C1401
is suitable for any application that features multiple high-speed
transceivers, including standard SFP (small form-factor pluggable),
dual SFP (DSFP) and quad SFP (QSFP), such as baseband units,
routers, and switches as found in telecommunications, networking
and data centers.
Typically, each transceiver requires a dedicated control channel
to a host, which is normally implemented using low-speed signal
pins and a low-speed protocol, such as I2C and others. As systems
become more complex they require more transceivers, putting
increased pressure on the host controller to support many more I2C
interfaces and other low-speed signal pins.
Using the PI7C1401, four low-speed ports can be aggregated into
a single channel and, by combining multiple quad port expanders, a
host processor can control up to 56 transceivers through a single
I2C/SPI interface. This can significantly lower the pin-count on
the host processor or FPGA used to control the high-speed
transceivers, as well as ease PCB layout and reduce the overall
bill-of-materials (BoM).
The I2C interface supports 1MHz fast mode and allows up to 14
PI7C1401 devices to share a single interface. The devices
automatically configure their respective addresses by
daisy-chaining their control pins. A bus speed of up to 33MHz is
supported when using SPI mode, which effectively allows an
unlimited number of PI7C1401 devices to share a single SPI
interface. In addition to port aggregation, the PI7C1401 provides a
number of other useful features, including four user-programmable
GPIO, along with two outputs dedicated to driving status LEDs.
The PI7C1401 also supports automatic pre-fetching of
user-defined critical data from the modules, as well as
customizable data-driven interrupts, the ability to burst
read/write the I2C/SPI interfaces, and a broadcast mode that allows
all ports to be written to simultaneously. These features greatly
increase the efficiency of PI7C1401's port control in highly
demanding applications.
The PI7C1401 quad port aggregator also supports separate
host-side I/O voltages, from 1.8V to 3.3V. It is available in a
56-ZF (TQFN) package measuring 5mm x 11mm at 0.5mm pitch, allowing
it to be surface-mounted to the underside of a PCB and close to the
physical interfaces. Further information is available at
www.diodes.com.
About Diodes Incorporated
Diodes Incorporated (Nasdaq: DIOD), a Standard and Poor’s
SmallCap 600 and Russell 3000 Index company, is a leading global
manufacturer and supplier of high-quality application specific
standard products within the broad discrete, logic, analog, and
mixed-signal semiconductor markets. Diodes serves the consumer
electronics, computing, communications, industrial, and automotive
markets. Diodes’ products include diodes, rectifiers, transistors,
MOSFETs, protection devices, function-specific arrays, single gate
logic, amplifiers and comparators, Hall-effect and temperature
sensors, power management devices, including LED drivers, AC-DC
converters and controllers, DC-DC switching and linear voltage
regulators, and voltage references along with special function
devices, such as USB power switches, load switches, voltage
supervisors, and motor controllers. Diodes also has timing,
connectivity, switching, and signal integrity solutions for
high-speed signals. Diodes’ corporate headquarters and Americas’
sales office are located in Plano, Texas and Milpitas, California.
Design, marketing, and engineering centers are located in Plano;
Milpitas; Taipei, Taiwan; Taoyuan City, Taiwan; Zhubei City,
Taiwan; Manchester, England; and Neuhaus, Germany. Diodes’ wafer
fabrication facility is located in Manchester, with an additional
facility located in Shanghai, China. Diodes has assembly and test
facilities located in Shanghai, Jinan, Chengdu, and Yangzhou,
China, as well as in Hong Kong, Neuhaus, and Taipei. Additional
engineering, sales, warehouse, and logistics offices are located in
Taipei; Hong Kong; Manchester; Shanghai; Shenzhen, China;
Seongnam-si, South Korea; Munich, Germany; and Tokyo, Japan, with
support offices throughout the world.
Recent news releases, annual reports and SEC filings are
available at the Company’s website: http://www.diodes.com. Written
requests may be sent directly to the Company, or they may be
e-mailed to: diodes-fin@diodes.com.
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version on businesswire.com: https://www.businesswire.com/news/home/20190326005098/en/
Company Contact:Diodes IncorporatedEmily YangVP,
Worldwide Sales and MarketingP: 972-987-3900E:
pressinquiries@diodes.com
Investor Relations Contact:Shelton GroupLeanne K.
SieversEVP, Investor RelationsP: 949-224-3874E:
lsievers@sheltongroup.com
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