Need help to identify QFN-20 chip marking code is 1449

Hello,
I have a chip from AIR-AP1542D-E-K9 Cisco WIFI and I cannot identify it.
I need help to identify QFN-20 chip, marking code is 1449.
I would be glad if you can help me with this issue.
Thanks,

1449
AIR-AP1542D-R-K9 Cisco WIFI


Hello,

Unfortunately I could not identify this one.