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Linksys WRH54G

Hardware Highlights

SoC Ram Flash Network USB Serial JTag
Broadcom BCM5354KFBG 8MiB 2MiB 4 x 1 No Yes ?

Manufacturer's site:



Instruction set: MIPS 32
Vendor: Broadcom
System-On-Chip: Broadcom BCM5354KFBG
CPU @Frq 240 MHz
Flash size: 2 MiB
Flash Chip: Samsung K8D1716UBC
RAM size: 8 MiB
RAM Chip: Samsung K4S641632K-UC75
Serial: Yes


outer case

Opening the case

Note: This will void your warranty!

To remove the cover, remove the 4 feet and use a torx T-10 with hole or 2.5mm flathead to remove the screws.

Main PCB:
circuit board


port.serial general information about the serial port, serial port cable, etc.

There is an unfilled five-pin header labeled JP1 which is a 3.3V TTL serial port. Experimentation with an oscilloscope indicates that it runs at 115200 8N1, but I'm waiting on the arrival of my serial adapter to verify. I believe this is the correct pinout, but I'm not certain about RxD and NC.

serial pinout diagram

toh/linksys/wrh54g.txt · Last modified: 2018/03/31 23:23 by bobafetthotmail