Most likely it is an ic from IDT.
But i have not found a datasheet yet.
However, there are a lot of i.c. that have similar product labels.
Here is a website :
Situated between the PCIe x16 slots we find an ICS clock generator, none other than the ICS 9LPRS477DKL. Specifically designed for the AMD platform, it controls all host clocks, CPU and Southbridge included, and is accessed via an SMBUS interface. The final board component, from JMicron, the JMB362, provides support for the dual eSATA 3.0 Gb/s ports found on the rear I/O. Having been on the market for several years, the JMB362 seems to fit in perfectly with what we expect from the ASUS M5A97 EVO.
Here is the IDT website :
These chips are made for the RS790 chipset from AMD/ATI.
You seek the 9LPRS477.
What kind of motherboard is it and cpu that have you ?
It must be a recent model, looking at the production date of the chip : 1107.
I am guessing 2011 week 7. But it can also be 2007 week 11.