It is a part of the 128-TQFP Exposed Pad package. This packaging has a Tape & Reel (TR)-shape, making it convenient to carry around. A reliable operation requires a temperature that is regulated to -40°C~85°C. It should work as long as you use a 1.8V 2.5V 3.3VV power source. Among other things, it contains 128 terminations. 1.2V is the supply voltage that enables high efficiency. This number is part of the KSZ9567 family.
KSZ9567STXI-TR Features
KSZ9567STXI-TR Applications
There are a lot of Microchip Technology KSZ9567STXI-TR Controllers Interface ICs applications.