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DS90UB949-Q1: What is the difference between ds90ub948-q1 and ds90uh948-q1?

Part Number: DS90UB949-Q1
Other Parts Discussed in Thread: DS90UH948-Q1, DS90UB948-Q1

Ti's teacher:

What is the difference between ds90ub948-q1 and ds90uh948-q1 in function?

What are the differences in hardware design?

What are the differences in software design?

I am using DS90UB948TNKDRQ1 and DS90UB949TRGCTQ1 on the current PCB. I need to add HDCP function. What modifications do I need to make?