Xtreme/GbE 24-Port - Managed Carrier Ethernet Switch
Users Guide
Document: CTIM-00455
Revision: 0.04
Page 38 of 46
Connect Tech Inc. 800-426-8979 | 519-836-1291
Date: 2017/08/04
Port LED Details
The XDG uses a serialized LED stream to output the LED status for each port as well as system status. This
serial signal is intended to be run through shift registers as shown below to de-serialize the stream. Each
output from
The XDG requires the use of QTY:7 8-bit shift registers setup in the configuration shown below. The
recommended shift register part number is
SN74AHC595PW
from Texas Instruments.
An example circuit is shown below, or an example schematic can be
