Last revised: November 22, 2024

Reviewed by: Scott Orlosky, consulting engineer

Network and communication chips are semiconductor integrated circuits (IC) used in telecommunication devices and systems. Network and communication chips use many different technologies.

Choices include:

current mode logic (CML), gunning transceiver logic (GTL), and gunning transceiver logic plus (GTLP); emitter coupling logic (ECL), positive ECL (PECL) voltage PECL (LVPEC); low-voltage differential signaling (LVDS), Bus LVDS (BLVDS)  multi-point LVDS (M-LVDS); digital visual interface (DVI) and high-definition media interface (HDMI); and digital subscriber line (DSL) and integrated services digital network (ISDN).

Network and communication chips can also use Ethernet, Fiber Channel, IEEE 1394 or FireWire^® (Apple Computer), Microwire^® (National Instruments), PanelBus, high-speed downlink packet access (HSDPA), inter-integrated circuit (I2)C, infrared data access (IrDA), global positioning system (GPS), general packet radio service (GPRS), low-voltage CMOS (LVCMOS), subscriber identification modules (SIM), small computer systems interface (SCSI), and the VersaModule Eurocard bus (VMEbus). Network and communication chips that use peripheral component interconnect (PCI), compact PCI (cPCI), and PCI Express (PCIe) are also available.

Types of Network and Communication Chips

IC interfaces support many different types of serial and wireless technologies.

Serial Technologies

• Serial technologies for IC interfaces include RS232, RS422, and RS485; serial 1-wire, serial 2-wire, and serial 3-wire; controller area network bus (CANbus); serial peripheral interface (SPI); system management bus (SMBus); universal serial bus (USB); and USB on-the-go (USB OTG) or USB 4.

Wireless Technologies

• Wireless technologies for IC interfaces include code division multiple access (CDMA), wide band code division multiple access (WCDMA), wireless fidelity (Wi-Fi) or IEEE 802.11, worldwide interoperability for microwave access (WiMAX) or IEEE 802.16, wireless mesh (Wi-Mesh), and ZigBee or IEEE 802.15.4. Bluetooth chips also provide wireless connectivity in solution-on-chip (SoC) platforms that power short-range radio communication applications.
• Wireless IC interfaces are also described as using 4G or 5G technologies.
• 4G is the fourth generation of mobile communication technology, enabling faster internet speeds, improved connectivity, and enhanced multimedia experiences on mobile devices compared to its predecessor, 3G
• 5G is the fifth generation of mobile communication technology, designed to deliver significantly faster data speeds, lower latency, and greater connectivity. It supports advanced applications like IoT, augmented reality, and smart cities, revolutionizing how devices interact and communicate.

Applications

Network and communication chips differ in terms of device types and applications. Some products are used as buffers, framers, front-ends, isolators, link layer controllers, media access controllers (MAC), or physical layer controllers (Phy controllers). Others are used as powerline networking devices, protectors, receivers, repeaters, radio frequency identification (RFID) devices, sample rate converters, serializers-deserializers (SerDes), subscriber line interface circuits (SLIC), storage interfaces, transmitters, transceivers, terminators, or universal asynchronous receiver/transmitters (UART). Network and communication chips such as voice-over-IP (VoIP) interfaces, ZigBee coordinators, ZigBee routers, ZigBee end-devices are also available.

Specifications

Performance specifications for network and communication chips include data rate, operating current, power dissipation, and temperature junction. Many different IC package types are available. Examples include ball-grid array (BGA), chip-scale package (CSP), quad flat package (QFP), small outline package (SOP), and dual in-line package (DIP).

Features

In terms of features, communication chips that are designed for the European marketplace must comply with the Restriction of Hazardous Substances (RoHS) directive from the European Union (EU). As a practical matter, most companies will convert to RoHS standards rather than carry two sets of inventory and parallel manufacturing lines unless their product is purposely for US consumption only. Some network and communication chips have an integrated charge pump or joint test action group (JTAG) pin. Others provide protection against electrostatic discharge (ESD), high temperatures, or over-voltage conditions.

Network and Communication Chips FAQs

How are network and communication chips different from processors (CPUs)?

CPUs are designed for general-purpose computing tasks, while network and communication chips specialize in handling data transmission and networking protocols. They manage the transfer of data efficiently across networks, offloading this task from the CPU and enhancing system performance.

What is the role of network chips in 5G technology?

Network chips in 5G enable ultra-fast data transmission, low latency, and massive device connectivity. They support the advanced protocols required for 5G's high-speed and high-bandwidth communication, making them essential for applications such as IoT, autonomous vehicles, smart cities, and high-definition streaming.

What are the challenges in designing network chips?

Major challenges include:

• Speed and bandwidth: Supporting higher data rates with minimal delay.
• Power efficiency: Optimizing energy consumption for battery-powered devices.
• Security: Ensuring robust encryption and secure data transmission.
• Miniaturization: Fitting powerful networking capabilities into increasingly smaller devices.

What are PHY and MAC layers in network chips?

PHY (Physical Layer) are the part of the chip that handles the physical transmission of data over a medium, like cables or airwaves (e.g., modulation/demodulation).

MAC (Media Access Control Layer) are responsible for controlling access to the physical transmission medium and managing protocols like Ethernet or Wi-Fi.

What is a modem chip, and how does it differ from a network chip?

A modem chip modulates and demodulates data for transmission over networks, such as converting digital signals to analog for phone lines or vice versa. Network chips handle broader functions, including routing, switching, and protocol management, in addition to basic modulation tasks.

How do communication chips handle security?

Communication chips incorporate encryption, secure authentication protocols, and other measures to prevent unauthorized access and ensure data integrity. For example, chips may support standards like WPA3 for Wi-Fi security, and encryption methods like AES (Advanced Encryption Standard).

Why is power efficiency important in communication chips?

Power efficiency is critical, especially in mobile devices like smartphones, laptops, and IoT devices that rely on batteries. Efficient chips help extend battery life while maintaining performance, making them essential in portable and energy-conscious applications.

What is the future of network and communication chips?

Future advancements will focus on supporting higher bandwidth, faster data rates, and ultra-low latency, especially with the rise of 5G, 6G, and the continued expansion of the Internet of Things (IoT). Additionally, there will be a push toward integrating AI to improve network management and communication efficiency.

Network and Communication Chips Media Gallery

References

Electronics360—IBM Seeks Customers for Neural Network Breakthrough

Engineering360—Hardware Used to Accelerate Core-to-Core Communication