Communication and interconnect · Application solutions

Ethernet Switching

Multi-port switching and PoE switches. Part of the "Communication and interconnect" group, which runs from PHYs and switching to industrial buses and pairs each chip with a matching port design.

Contact an FAE →

Typical application circuits

Circuit approaches and matching VOOHU parts, organized by application scenario.

SW-01

10/100BASE-TX multi-port switch reference board

Start from the switch chip. Choose 10/100 Mbps magnetics, interfaces, power and clocking for the port count, then validate forwarding and configuration.

Switch chip
Multi-port magnetics and interfaces
Forwarding and configuration validation

Data communications
Industrial control

Core chips (vendor documentation)

JL5104C-NIEthernet switch chip
10/100 Mbps Ethernet switch chip, NI variant of the JL5104 series, 3+1 interface configuration.
View the JL5104 series →

Design checklist

Do not substitute a single-port PHY reference schematic for a switch design.
Every port and every configuration setting must be traceable.
Check the port and uplink definitions, configuration pins and reset.
Complete forwarding tests and thermal tests.

SW-02

Gigabit multi-port switch reference board

Design each MDI channel, the magnetics and RJ45s, power and uplink around the Gigabit switch chip. Choose the temperature grade for the target environment.

Gigabit switch chip
Multi-port magnetics and RJ45
Switching and thermal validation

Data communications
Security and surveillance

Core chips (vendor documentation)

JL6105-NCEthernet switch chip
5-port Gigabit Ethernet switch chip, QFN88 package, temperature range 0–70°C.
View the JL6105 series →

Matching VOOHU parts

WHSG24301JMLAN transformer · Gigabit LAN transformer, non-PoEMore LAN transformers →

Design checklist

The JL6105-NC temperature range is 0–70°C. Do not treat it as an industrial-grade part.
Confirm the management and configuration capabilities item by item.
Check port mapping, clocking, power sequencing and registers.
Record throughput and temperature-rise test results.

SW-03

PoE switch combined reference design

The switch chip forwards data. The PSE controller injects power into each port through the magnetics and RJ45. Plan one power budget that covers both.

Switch data path
Magnetics/RJ45 and PSE power injection
Powered devices and power management

Industrial control
Data communications

Core chips (vendor documentation)

JL6105-NCEthernet switch chip
5-port Gigabit Ethernet switch chip, QFN88 package, temperature range 0–70°C.
View the JL6105 series →
TPS23881TI · PoE PSE controller
PoE PSE controller that supports 4-pair power applications.
TPS23881 product page ↗

Matching VOOHU parts

WHSG24Z01C0LAN transformer · Gigabit, 4PPoEMore LAN transformers →

Design checklist

PoE port definitions and the power budget must be calculable line by line.
Validate the switch chip and PSE controller pairing first.
Check the system power supply and power policy against the port count and power class.
Check host control and heat dissipation, and run data and power interoperability tests.

SW-04

Switch chip configuration and software support

After power-on reset, complete the switch chip's register configuration, then run link diagnostics and version management. Available software features depend on what the chip vendor supports.

Power/reset startup
Configuration and registers
Link diagnostics and version management

Industrial control
Data communications

Core chips (vendor documentation)

JL5104C-NIEthernet switch chip
10/100 Mbps Ethernet switch chip, NI variant of the JL5104 series, 3+1 interface configuration.
View the JL5104 series →
JL6105-NCEthernet switch chip
5-port Gigabit Ethernet switch chip, QFN88 package, temperature range 0–70°C.
View the JL6105 series →

Design checklist

Rely only on software features that the vendor documentation explicitly supports.
Do not use an unmanaged chip as a managed switch chip.
Initialization scripts must match the chip revision.
On platforms that need an SDK, develop with the vendor SDK and its user guide.

Chip part numbers are taken from the vendors' public documentation and are for selection reference only. Check matching VOOHU parts against your project parameters before use.

Standard reference designs for this solution area are being prepared and will be listed on this page once published. For circuit and part selection support, contact a VOOHU FAE.

Need help selecting parts for your project?

Send the chip model, interface data rate, and power and protection requirements to a VOOHU FAE to check the peripheral parts against a reference design.

Contact an FAE →

Ethernet Switching

Typical application circuits

10/100BASE-TX multi-port switch reference board

Core chips (vendor documentation)

Design checklist

Gigabit multi-port switch reference board

Core chips (vendor documentation)

Matching VOOHU parts

Design checklist

PoE switch combined reference design

Core chips (vendor documentation)

Matching VOOHU parts

Design checklist

Switch chip configuration and software support

Core chips (vendor documentation)

Design checklist

Need help selecting parts for your project?

Related solution areas

Please fill in your contact information and inquiry