I'm finding the pin numbers for this Toshiba IC. Google search results shows this Datasheet, but it doesn't have the pin numbers written. Thank you.
Bonus: What does this logo represents? They're all over the places in this PCB. 
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As you've discovered, TC160G is a family of gate arrays by Toshiba.
A gate array is a silicon chip pre-loaded with transistors, gates, etc., and no interconnects. A customer provides specifications for what gates, pins, etc. shall be interconnected, and the foundry builds that (metallization layers on top of the gate layers).
In short, it's a totally custom chip. You would have to ask the customer who ordered it.
The logo appears to be NSD Corporation.
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\$\begingroup\$ Does that means it was NSD Corporation who ordered the chip in the first place? \$\endgroup\$ Commented Feb 6 at 2:47
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\$\begingroup\$ Most likely.
ABS24201Ais probably their internal part number. \$\endgroup\$ Commented Feb 6 at 2:50