CS8900A-IQ Overview
I have found that this gadget has a total of SERIAL IO/COMMUNICATION CONTROLLER, LAN uPs/uCs/peripheral ICs in total. This part incorporates serial I/Os on the 2 axis. Having a maximum operating temperature of 85 °C°C supports stable operation. Reliability is ensured by operating it at a minimum temperature of -40 °C degrees Celsius.
CS8900A-IQ Features

CS8900A-IQ Applications
There are a lot of Cirrus Logic
CS8900A-IQ Controllers Interface ICs applications.

Commercial LED Lighting
Smart LED Lighting
Portable Appliances
Battery-Operated Devices
Cellular Data Devices
Factory Automation and Process Controls
IrDA transmission control
Remote transmission formatter
Docking
Mobile Monitors

Contact Plating	Lead, Tin
Mount	Surface Mount
Surface Mount	YES
Number of Terminals	100
RoHS	Non-Compliant
Manufacturer	Crystal Semiconductor Corp
Package Shape	SQUARE
Max Operating Temperature	85 °C
Min Operating Temperature	-40 °C
Technology	CMOS
Terminal Position	QUAD
Terminal Form	GULL WING
Reach Compliance Code	unknown
JESD-30 Code	S-PQFP-G100
Qualification Status	Not Qualified
Temperature Grade	INDUSTRIAL
uPs/uCs/Peripheral ICs Type	SERIAL IO/COMMUNICATION CONTROLLER, LAN
Data Rate	10 Mbps
Address Bus Width	20
Boundary Scan	YES
Low Power Mode	YES
External Data Bus Width	16
Number of Serial I/Os	2
Bus Compatibility	ISA
Data Transfer Rate-Max	1.25 MBps
Data Encoding/Decoding Method	NRZ; BIPH-LEVEL(MANCHESTER)